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• 30 Steps to Master ASP.NET MVC Application development

  - by Rajesh Pillai

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} Welcome Readers!,   I am starting out a new series on ASP.NET  MVC skill building which will be posted over the next couple of weeks.  Let me know your thoughts on the content, which I have planned and a couple of them has been taken from ASP.NET MVC2 Cookbook. (NOTE: Only the heading has been taken, the content will be not :)).   Do let me know what you would like to see, or any additional inputs or ideas to cover in this topics.  The 30 steps are oultined below for quick reference.  Will start filling this out quickly.   Outlined is the ‘30’ step to master ASP.NET MVC.   A Peek Into Model What is a model? Different types of model Presentation/ViewModel Model Mapping (AutoMapper)   A Peak into View How view works in ASP.NET MVC? View Engine Design Custom View Engine View Best Practices Templated Helpers Partial Views   A Peak into Controller Introduction Controller Design Controller Best Practices Asynchronous Controller Custom Action Result Action Filters Controller Factory to use with IOC   Routes Explanation Routes from the database Routes from XML More complex routing   Master Pages Basics Setting Master Page Dynamically   Working with data in the view Repeating Views Array of check boxes Array of radio buttons Paged data CRUD Client side action Confirmation Dialog (modal window) jqGrid   Working with Forms   Validation Model Validation with DataAnnotations Using the xVal validation framework Client side validation with jQuery Validation Fluent Validation Model Binders   Templating Create strongly typed helper using T4 Custom View Templates with T4 Create custom MVC project template using T4   IOC AutoFac Ninject Unity Application   Areas   jQuery, Ajax and jQuery Plugins   State Maintenance Application State User state Cookies Webfarm   Error Handling View error handling Controller error handling ELMAH (Error Logging Modules and Handlers)   Authentication and Authorization User Registration form SignOn Process Password Reminder Membership and Roles Windows authentication Restricting access to all pages Restricting access to selected pages Restricting access to pages by role Restricting access to a controller Restricting access to selected area   Profiles and Themes Using Profiles Inheriting a Profile Migrating an anonymous profile Creating custom themes Using themes User personalized themes   Configuration Adding custom application settings in web.config Displaying custom error messages Accessing other web.config configuration elements Adding custom configuration elements to web.config Encrypting web.config sections   Tracing, Debugging and Logging   Caching Caching a whole page Caching pages based on route details Caching pages based on browser type and version Caching pages based custom strings Caching partial pages Caching application data Object Caching Using Microsoft Velocity Using MemCache Using AppFabric cache   Localization   HTTP Handlers and Modules   Security XSS/CSRF AnitForgery Encoding   HtmlHelpers Strongly typed helpers Writing custom helpers   Repository Pattern (Data access)   WF/WCF   Unit Testing   Mocking Framework   Integration Testing   Load / Performance Testing   Deployment    Once again let me know your thoughts on this.   Till then, Enjoy MVC'ing!!!

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• How add fog with pixel shader (HLSL) XNA?

  - by Mehdi Bugnard

  I started to make a small game in XNA . And recently i tried to add a "fog" on "pixel shader HLSL" with the class Effect from XNA . I search online about some tutorial and found many sample. But nothing want work on my game :-( . Before i already add a "fog" effect in my game and everything work, because i used the class "BasicEffect" but with the class "Effect" and HLSL, it's really more complicated. If somebody have an idea, it's will be wonderfull. Thanks again. Here is my code HLSL, i use. // Both techniques share this same pixel shader. float4 PixelShaderFunction(VertexShaderOutput input) : COLOR0 { //return tex2D(Sampler, input.TextureCoordinate) * input.Color; float d = length(input.TextureCoordinate - cameraPos); float l = saturate((d-fogNear)/(fogFar-fogNear)); float fogFactory = clamp((d - fogNear) / (fogFar - fogNear), 0, 1) * l; return tex2D(Sampler, input.TextureCoordinate) * lerp(input.Color, fogColor, fogFactory); } Here is the screenShot With effect Without effect

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• Crash after plugging in the Logitech H600 wireless transmitter

  - by SneezyDinosaur

  I recently bought the Logitech H600 Wireless Headset. When I plug in the USB wireless transmitter, Ubuntu 12.04 LTS crashes. How does that come and what do you suggest me to do? Same problem here, as soon as the H600 headset is plugged in 12.04 crashes. Relevant snip from /var/log/Xorg.failsafe.log is below, complete log can be found as a gist [ 2676.496] (**) Logitech Logitech Wireless Headset: Applying InputClass "evdev keyboard catchall" [ 2676.496] (II) Using input driver 'evdev' for 'Logitech Logitech Wireless Headset' [ 2676.496] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so [ 2676.496] (**) Logitech Logitech Wireless Headset: always reports core events [ 2676.496] (**) evdev: Logitech Logitech Wireless Headset: Device: "/dev/input/event16" [ 2676.496] (--) evdev: Logitech Logitech Wireless Headset: Vendor 0x46d Product 0xa29 [ 2676.496] (--) evdev: Logitech Logitech Wireless Headset: Found absolute axes [ 2676.496] (--) evdev: Logitech Logitech Wireless Headset: Found absolute multitouch axes [ 2676.496] (--) evdev: Logitech Logitech Wireless Headset: Found keys [ 2676.496] (II) evdev: Logitech Logitech Wireless Headset: Configuring as mouse [ 2676.496] (II) evdev: Logitech Logitech Wireless Headset: Configuring as keyboard [ 2676.496] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.2/2-1.2.2:1.3/input/input16/event16" [ 2676.496] (II) XINPUT: Adding extended input device "Logitech Logitech Wireless Headset" (type: KEYBOARD, id 10) [ 2676.496] (**) Option "xkb_rules" "evdev" [ 2676.496] (**) Option "xkb_model" "pc105" [ 2676.496] (**) Option "xkb_layout" "us" [ 2676.497] (II) evdev: Logitech Logitech Wireless Headset: initialized for absolute axes. [ 2676.497] Backtrace: [ 2676.497] 0: /usr/bin/X (xorg_backtrace+0x37) [0xb7698637] [ 2676.497] 1: /usr/bin/X (0xb7510000+0x18c3ba) [0xb769c3ba] [ 2676.497] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb74ed40c] [ 2676.497] 3: /lib/i386-linux-gnu/libc.so.6 (0xb7155000+0x135d32) [0xb728ad32] [ 2676.497] 4: /usr/bin/X (XIChangeDeviceProperty+0x16c) [0xb7630b0c] [ 2676.497] 5: /usr/lib/xorg/modules/input/evdev_drv.so (0xb3f4a000+0x634e) [0xb3f5034e]

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• How to drop all subnets outside of the US using iptables

  - by Jim

  I want to block all subnets outside the US. I've made a script that has all of the US subnets in it. I want to disallow or DROP all but my list. Can someone give me an example of how I can start by denying everything? This is the output from -L Chain INPUT (policy DROP) target prot opt source destination ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT tcp -- anywhere anywhere tcp dpt:ftp state NEW DROP icmp -- anywhere anywhere Chain FORWARD (policy DROP) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination And these are the rules iptables --F iptables --policy INPUT DROP iptables --policy FORWARD DROP iptables --policy OUTPUT ACCEPT iptables -A INPUT -i lo -j ACCEPT iptables -A INPUT -i eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -p tcp -i eth0 --dport 21 -m state --state NEW -j ACCEPT iptables -A INPUT -p icmp -j DROP Just for clarity, with these rules, I can still connect to port 21 without my subnet list. I want to block ALL subnets and just open those inside the US.

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• How to I get a rotated sprite to move left or right?

  - by rphello101

  Using Java/Slick 2D, I'm using the mouse to rotate a sprite on the screen and the directional keys (in this case, WASD) to move the spite. Forwards and backwards is easy, just position += cos(ang)*speed or position -= cos(ang)*speed. But how do I get the sprite to move left or right? I'm thinking it has something to do with adding 90 degrees to the angle or something. Any ideas? Rotation code: int mX = Mouse.getX(); int mY = HEIGHT - Mouse.getY(); int pX = sprite.x+sprite.image.getWidth()/2; int pY = sprite.y+sprite.image.getHeight()/2; double mAng; if(mX!=pX){ mAng = Math.toDegrees(Math.atan2(mY - pY, mX - pX)); if(mAng==0 && mX<=pX) mAng=180; } else{ if(mY>pY) mAng=90; else mAng=270; } sprite.angle = mAng; sprite.image.setRotation((float) mAng); And the movement code (delta is change in time): Input input = gc.getInput(); Vector2f direction = new Vector2f(); Vector2f velocity = new Vector2f(); direction.x = (float) Math.cos(Math.toRadians(sprite.angle)); direction.y = (float) Math.sin(Math.toRadians(sprite.angle)); if(direction.length()>0) direction = direction.normalise(); //On a separate note, what does this line of code do? velocity.x = (float) (direction.x * sprite.moveSpeed); velocity.y = (float) (direction.y * sprite.moveSpeed); if(input.isKeyDown(sprite.up)){ sprite.x += velocity.x*delta; sprite.y += velocity.y*delta; }if (input.isKeyDown(sprite.down)){ sprite.x -= velocity.x*delta; sprite.y -= velocity.y*delta; }if (input.isKeyDown(sprite.left)){ //??? }if (input.isKeyDown(sprite.right)){ //??? }

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• .bat file overriding answer

  - by John Peters

  When I made this batch file, when typing y and n for the first time it works fine, but as soon as I choose n, every single time I try inputting something, it opens up the 7000 songs wpl list then closes it and replaces it with Rick Astley... HELP! @echo off :Ask echo Would you like to listen to the best songs out of the 7000 I have?(Y/N) set INPUT= set /P INPUT=Type input: %=% If /I "%INPUT%"=="y" goto yes If /I "%INPUT%"=="n" goto lolno echo Incorrect input & goto Ask :yes start c:/Users/MyName/Music/Playlists/"The Best of the 7000 songs that I have.wpl" :lolno start c:/Users/MyName/Music/Downloads/Music/"Various Artists"/"The Number One 80's Album Disc 2"/"06 Never Gonna Give You Up.mp3"

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• What could cause a pixel shader to paint outside the lines of the vertex shader output?

  - by Rei Miyasaka

  From what I understand, the pixels that a pixel shader operates on are specified implicitly by the SV_POSITION output (in DirectX) of the vertex shader. What then could cause a pixel shader to render in the middle of nowhere? I used the new Visual Studio 2012 graphics debugger to visualize my vertex and pixel shader output. This is the output from a DrawIndexed() call that draws a cube: The pink part is the rendered output of the pixel shader, which takes the cube on its left as its input. The vertex shader code: cbuffer Buf { float4x4 final; }; struct In { float4 pos:POSITION; float3 norm:NORMAL; float2 texuv:TEXCOORD; }; struct Out { float4 col:COLOR; float2 tex:TEXCOORD; float4 pos:SV_POSITION; }; Out main(In input) { Out output; output.pos = mul(input.pos, final); output.col = float4(1.0f, 0.5f, 0.5f, 1.0f); output.tex = input.texuv; return output; } And the pixel shader: struct In { float4 col:COLOR; float2 tex:TEXCOORD; float4 pos:SV_POSITION; }; float4 main(In input) : SV_TARGET { return input.col; } The raster stage is the only thing between the vertex shader and the pixel shader, so my suspicion is that it's some raster stage settings. But the raster stage shouldn't change the shape of the vertex shader output so drastically, should it?

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• iptables logging to diferent file via syslog-ng

  - by rahrahruby

  I have the following configuration in my iptables and syslog files: IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -p tcp -m tcp --dport 222 -j ACCEPT -A INPUT -p tcp -m tcp --dport 3306 -j ACCEPT -A INPUT -j DROP -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 SYSLOG-NG destination d_iptables { file("/var/log/iptables/iptables.log"); }; filter f_iptables { facility(kern) and match("IN=" value("MESSAGE")) and match("OUT=" value("MESSAGE")); }; filter f_messages { level(info,notice,warn) and not facility(auth,authpriv,cron,daemon,mail,news) and not filter(f_iptables); }; log { source(s_src); filter(f_iptables); destination(d_iptables); };` I restart syslog-ng and the log is not written.

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• How can I get multitouch enabled on my Sentelic touchpad (msi x350 notebook)?

  - by Jon

  I understand my MSI x350 notebook comes with a Sentelic trackpad, which supports multi-touch (according to the MSI website). Is there a way to enable multitouch on Ubuntu? I've been having difficulty finding info about this on google, and since it's not a synaptics touchpad I haven't been able to find much info in ubuntu docs. My mouse preferences doesn't have a trackpad tab like it does on, say, a Macbook. Running "xinput list" returns: FSPPS/2 Sentelic FingerSensingPad id=11 And in my Xorg.0.log: [ 17.481] (II) config/udev: Adding input device FSPPS/2 Sentelic FingerSensingPad (/dev/input/event6) [ 17.481] () FSPPS/2 Sentelic FingerSensingPad: Applying InputClass "evdev pointer catchall" [ 17.481] () FSPPS/2 Sentelic FingerSensingPad: always reports core events [ 17.481] () FSPPS/2 Sentelic FingerSensingPad: Device: "/dev/input/event6" [ 17.500] (II) FSPPS/2 Sentelic FingerSensingPad: Found 11 mouse buttons [ 17.500] (II) FSPPS/2 Sentelic FingerSensingPad: Found scroll wheel(s) [ 17.500] (II) FSPPS/2 Sentelic FingerSensingPad: Found relative axes [ 17.500] (II) FSPPS/2 Sentelic FingerSensingPad: Found x and y relative axes [ 17.500] (II) FSPPS/2 Sentelic FingerSensingPad: Configuring as mouse [ 17.500] () FSPPS/2 Sentelic FingerSensingPad: YAxisMapping: buttons 4 and 5 [ 17.500] (**) FSPPS/2 Sentelic FingerSensingPad: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 [ 17.500] (II) XINPUT: Adding extended input device "FSPPS/2 Sentelic FingerSensingPad" (type: MOUSE) [ 17.500] (II) FSPPS/2 Sentelic FingerSensingPad: initialized for relative axes. [ 17.500] (II) config/udev: Adding input device FSPPS/2 Sentelic FingerSensingPad (/dev/input/mouse0)

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• Writing custom Message Formatter for SOAP basicHttpBinding

  - by Lijo

  I have a WSDL published by our service development team. It is using SOAP and basicHttpBinding. I can add the service reference to the project using Add Service Reference option in Visual Studio. I need to develop the WCF client. I need to use custom Message Formatter (for mapping between Messages and CLR types). Can you please show how to write the custom Message Formatter (in C# )for the following wsdl? Note: I am planning to use custom Message Formatter due to an issue mentioned in http://stackoverflow.com/questions/12316884/header-namespace-mismatch-issue WSDL <definitions xmlns:import0="urn:thinktecture-com:demos:restaurantservice:data:v1" xmlns:import2="urn:thinktecture-com:demos:restaurantservice:messages:v1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:import1="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" xmlns:tns="urn:thinktecture-com:demos:restaurantservice:wsdl:v1" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" name="RestauarntService" targetNamespace="urn:thinktecture-com:demos:restaurantservice:wsdl:v1" xmlns="http://schemas.xmlsoap.org/wsdl/"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <types> <xsd:schema> <xsd:import schemaLocation="RestaurantData.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:data:v1" /> <xsd:import schemaLocation="RestaurantHeaderData.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" /> <xsd:import schemaLocation="RestaurantMessages.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:messages:v1" /> </xsd:schema> </types> <message name="getRestaurantsIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:getRestaurants" /> </message> <message name="getRestaurantsOut"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:getRestaurantsResponse" /> </message> <message name="lijosCustomFaultMessage"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="fault" element="import2:customFault" /> </message> <message name="userCredentialsIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import1:userCredentials" /> </message> <message name="addRestaurantIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:addRestaurant" /> </message> <message name="addRestaurantInHeader1"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import1:userCredentials" /> </message> <message name="customFaultIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:customFault" /> </message> <portType name="RestauarntServiceInterface"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <operation name="getRestaurants"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:getRestaurantsIn" /> <output message="tns:getRestaurantsOut" /> <fault name="lijosCustomFaultMessage" message="tns:lijosCustomFaultMessage" /> </operation> <operation name="userCredentials"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:userCredentialsIn" /> </operation> <operation name="addRestaurant"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:addRestaurantIn" /> </operation> <operation name="customFault"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:customFaultIn" /> </operation> </portType> <binding name="BasicHttpBinding_RestauarntServiceInterface" type="tns:RestauarntServiceInterface"> <soap:binding transport="http://schemas.xmlsoap.org/soap/http" /> <operation name="getRestaurants"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:getRestaurantsIn" style="document" /> <input> <soap:body use="literal" /> </input> <output> <soap:body use="literal" /> </output> <fault name="lijosCustomFaultMessage"> <soap:fault use="literal" name="lijosCustomFaultMessage" namespace="" /> </fault> </operation> <operation name="userCredentials"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:userCredentialsIn" style="document" /> <input> <soap:body use="literal" /> </input> </operation> <operation name="addRestaurant"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:addRestaurantIn" style="document" /> <input> <soap:body use="literal" /> <soap:header message="tns:addRestaurantInHeader1" part="parameters" use="literal" /> </input> </operation> <operation name="customFault"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:customFaultIn" style="document" /> <input> <soap:body use="literal" /> </input> </operation> </binding> <service name="RestauarntServicePort"> <port name="RestauarntServicePort" binding="tns:BasicHttpBinding_RestauarntServiceInterface"> <soap:address location="http://localhost/RestauarntService" /> </port> </service> </definitions>?? RestaurantData.xsd <?xml version="1.0" encoding="utf-8" ?> <xs:schema id="RestaurantData" targetNamespace="urn:thinktecture-com:demos:restaurantservice:data:v1" elementFormDefault="qualified" xmlns="urn:thinktecture-com:demos:restaurantservice:data:v1" xmlns:mstns="urn:thinktecture-com:demos:restaurantservice:data:v1" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:complexType name="restaurantInfo"> <xs:sequence> <xs:element name="restaurantID" type="xs:int" /> <xs:element name="name" type="xs:string" /> <xs:element name="address" type="xs:string" /> <xs:element name="city" type="xs:string" /> <xs:element name="state" type="xs:string" /> <xs:element name="zip" type="xs:string" /> <xs:element name="openFrom" type="xs:time" /> <xs:element name="openTo" type="xs:time" /> </xs:sequence> </xs:complexType> <xs:complexType name="restaurantsList"> <xs:sequence> <xs:element name="restaurant" type="restaurantInfo" maxOccurs="unbounded" minOccurs="0" /> </xs:sequence> </xs:complexType> <xs:complexType name="customFault"> <xs:sequence> <xs:element name="errorCode" type="xs:string"/> <xs:element name="message" type="xs:string"/> <xs:element maxOccurs="unbounded" minOccurs="0" name="messages" type="xs:string" /> </xs:sequence> </xs:complexType> </xs:schema> RestaurantHeaderData.xsd <?xml version="1.0" encoding="utf-8" ?> <xs:schema id="RestaurantHeaderData" targetNamespace="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" elementFormDefault="qualified" xmlns="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" xmlns:mstns="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:complexType name="credentials"> <xs:sequence> <xs:element name="username" type="xs:string" /> <xs:element name="password" type="xs:string" /> </xs:sequence> </xs:complexType> <xs:element name="userCredentials" type="credentials"> </xs:element> </xs:schema> ? RestaurantMessages.xsd <?xml version="1.0" encoding="utf-8" ?> <xs:schema id="RestaurantMessages" targetNamespace="urn:thinktecture-com:demos:restaurantservice:messages:v1" elementFormDefault="qualified" xmlns="urn:thinktecture-com:demos:restaurantservice:messages:v1" xmlns:mstns="urn:thinktecture-com:demos:restaurantservice:messages:v1" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:import="urn:thinktecture-com:demos:restaurantservice:data:v1"> <xs:import id="RestaurantData" schemaLocation="RestaurantData.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:data:v1"> </xs:import> <xs:element name="getRestaurants"> <xs:complexType> <xs:sequence> <xs:element name="zip" type="xs:string" /> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="getRestaurantsResponse"> <xs:complexType> <xs:sequence> <xs:element name="restaurants" type="import:restaurantsList" /> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="addRestaurant"> <xs:complexType> <xs:sequence> <xs:element name="restaurant" type="import:restaurantInfo" /> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="customFault" type="import:customFault" /> </xs:schema>

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• Whether to separate out methods or not

  - by Skippy

  I am new to java and want to learn best coding practices and understand why one method is better than another, in terms of efficiency and as the coding becomes more complicated. This is just an example, but I can take the principles from here to apply elsewhere. I have need an option to display stuff, and have put the method stuff separately from the method to ask if the user wants to display the stuff, as stuff has a lot of lines of code. For readability I have done this: public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { stuff (); } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } private static String stuff () { //to lots of things here return stuff (); } Or public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { //to lots of things here stuff; } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } Is it better to keep them together and why? Also, should the second method be private or public, if I am asking for data within the class? I am not sure if this is on topic for here. please advise.

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• Add & Show data in Java ArrayList [closed]

  - by Kaidul Islam Sazal

  I have a class inside a main class : static class Graph{ static int u, v, cost; } I have instantiated an arraylist of the class: static List<Graph> g = new ArrayList<Graph>(); And I insert several values into the arraylist like this: Scanner input = new Scanner(System.in); for (int i = 0; i < edge_no; i++) { Graph e = new Graph(); e.u = input.nextInt(); e.v = input.nextInt(); e.cost = input.nextInt(); g.add(e); } And I print it like this: for (int i = 0; i < edge_no; i++) { System.out.println(g.get(i).u + " " + g.get(i).v + " " + g.get(i).cost); } But the problem is that, when I print it, only the last value is shown all the time.It seems that, all the previous values are over-written with it. Input : 1 2 5 1 3 8 2 3 9 Output: 2 3 9 2 3 9 2 3 9 Expected output is just like the input.But I can't fix the problem as I am novice in java.

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• ERROR #342: DEVICE_SHADER_LINKAGE_SEMANTICNAME_NOT_FOUND

  - by Telanor

  I've stared at this for at least half an hour now and I cannot figure out what directx is complaining about. I know this error normally means you put float3 instead of a float4 or something like that, but I've checked over and over and as far as I can tell, everything matches. This is the full error message: D3D11: ERROR: ID3D11DeviceContext::DrawIndexed: Input Assembler - Vertex Shader linkage error: Signatures between stages are incompatible. The input stage requires Semantic/Index (COLOR,0) as input, but it is not provided by the output stage. [ EXECUTION ERROR #342: DEVICE_SHADER_LINKAGE_SEMANTICNAME_NOT_FOUND ] This is the vertex shader's input signature as seen in PIX: // Input signature: // // Name Index Mask Register SysValue Format Used // -------------------- ----- ------ -------- -------- ------ ------ // POSITION 0 xyz 0 NONE float xyz // NORMAL 0 xyz 1 NONE float // COLOR 0 xyzw 2 NONE float The HLSL structure looks like this: struct VertexShaderInput { float3 Position : POSITION0; float3 Normal : NORMAL0; float4 Color: COLOR0; }; The input layout, from PIX, is: The C# structure holding the data looks like this: [StructLayout(LayoutKind.Sequential)] public struct PositionColored { public static int SizeInBytes = Marshal.SizeOf(typeof(PositionColored)); public static InputElement[] InputElements = new[] { new InputElement("POSITION", 0, Format.R32G32B32_Float, 0), new InputElement("NORMAL", 0, Format.R32G32B32_Float, 0), new InputElement("COLOR", 0, Format.R32G32B32A32_Float, 0) }; Vector3 position; Vector3 normal; Vector4 color; #region Properties ... #endregion public PositionColored(Vector3 position, Vector3 normal, Vector4 color) { this.position = position; this.normal = normal; this.color = color; } public override string ToString() { StringBuilder sb = new StringBuilder(base.ToString()); sb.Append(" Position="); sb.Append(position); sb.Append(" Color="); sb.Append(Color); return sb.ToString(); } } SizeInBytes comes out to 40, which is correct (4*3 + 4*3 + 4*4 = 40). Can anyone find where the mistake is?

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• Iptables working strangely

  - by user109985

  I have Ubuntu 12.04 x64 installed in my laptop. I'm quite new to linux, and I wanted to specify certain rules for the iptables firewall. This is the saved config of my iptables: *mangle :PREROUTING ACCEPT [0:0] :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT *nat :PREROUTING ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] -A PREROUTING -p tcp -m tcp --dport 3306 -j DNAT --to-destination 192.168.1.100:3306 -A PREROUTING -p tcp -m tcp --dport 11002 -j DNAT --to-destination 192.168.1.100:11002 -A PREROUTING -p tcp -m tcp --dport 13000 -j DNAT --to-destination 192.168.1.100:13000 -A PREROUTING -p tcp -m tcp --dport 13001 -j DNAT --to-destination 192.168.1.100:13001 -A PREROUTING -p tcp -m tcp --dport 13002 -j DNAT --to-destination 192.168.1.100:13002 -A PREROUTING -p tcp -m tcp --dport 13003 -j DNAT --to-destination 192.168.1.100:13003 -A PREROUTING -p tcp -m tcp --dport 13004 -j DNAT --to-destination 192.168.1.100:13004 -A PREROUTING -p tcp -m tcp --dport 13061 -j DNAT --to-destination 192.168.1.100:13061 -A PREROUTING -p tcp -m tcp --dport 13099 -j DNAT --to-destination 192.168.1.100:13099 -A POSTROUTING -j MASQUERADE COMMIT *filter :INPUT DROP [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT -A INPUT -i eth0 -p tcp -m tcp --dport 80 -j ACCEPT COMMIT In theory, what it does is to drop all connections in all ports except for http, mysql and few other ports. Moreover, it redirects all mysql and 13000-13004..etc port connections to a specific local ip in the same port, which is 192.168.1.100. But what I find strange is that when my firewall is active, it blocks absolutely all the input connections, even those which must not block (http, mysql). In fact, I'm literally blocked and I can't establish any external connection. What am I doing wrong? PS: I tested the firewall without those redirections, and it still block all inputs, so I suppose it's not the problem.

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• Code Golf: Finite-state machine!

  - by Adam Matan

  Finite state machine A deterministic finite state machine is a simple computation model, widely used as an introduction to automata theory in basic CS courses. It is a simple model, equivalent to regular expression, which determines of a certain input string is Accepted or Rejected. Leaving some formalities aside, A run of a finite state machine is composed of: alphabet, a set of characters. states, usually visualized as circles. One of the states must be the start state. Some of the states might be accepting, usually visualized as double circles. transitions, usually visualized as directed arches between states, are directed links between states associated with an alphabet letter. input string, a list of alphabet characters. A run on the machine begins at the starting state. Each letter of the input string is read; If there is a transition between the current state and another state which corresponds to the letter, the current state is changed to the new state. After the last letter was read, if the current state is an accepting state, the input string is accepted. If the last state was not an accepting state, or a letter had no corresponding arch from a state during the run, the input string is rejected. Note: This short descruption is far from being a full, formal definition of a FSM; Wikipedia's fine article is a great introduction to the subject. Example For example, the following machine tells if a binary number, read from left to right, has an even number of 0s: The alphabet is the set {0,1}. The states are S1 and S2. The transitions are (S1, 0) -> S2, (S1, 1) -> S1, (S2, 0) -> S1 and (S2, 1) -> S2. The input string is any binary number, including an empty string. The rules: Implement a FSM in a language of your choice. Input The FSM should accept the following input: <States> List of state, separated by space mark. The first state in the list is the start state. Accepting states begin with a capital letter. <transitions> One or more lines. Each line is a three-tuple: origin state, letter, destination state) <input word> Zero or more characters, followed by a newline. For example, the aforementioned machine with 1001010 as an input string, would be written as: S1 s2 S1 0 s2 S1 1 S1 s2 0 S1 s2 1 s2 1001010 Output The FSM's run, written as <State> <letter> -> <state>, followed by the final state. The output for the example input would be: S1 1 -> S1 S1 0 -> s2 s2 0 -> S1 S1 1 -> S1 S1 0 -> s2 s2 1 -> s2 s2 0 -> S1 ACCEPT For the empty input '': S1 ACCEPT For 101: S1 1 -> S1 S1 0 -> s2 s2 1 -> s2 REJECT For '10X': S1 1 -> S1 S1 0 -> s2 s2 X REJECT Prize A nice bounty will be given to the most elegant and short solution. Reference implementation A reference Python implementation will be published soon.

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• "Invalid form control" only in Google Chrome

  - by MFB

  The code below works well in Safari but in Chrome and Firefox the form will not submit. Chrome console logs the error An invalid form control with name='' is not focusable. Any ideas? Note that whilst the controls below do not have names, they should have names at the time of submission, populated by the Javascript below. The form DOES work in Safari. <form method="POST" action="/add/bundle"> <p> <input type="text" name="singular" placeholder="Singular Name" required> <input type="text" name="plural" placeholder="Plural Name" required> </p> <h4>Asset Fields</h4> <div class="template-view" id="template_row" style="display:none"> <input type="text" data-keyname="name" placeholder="Field Name" required> <input type="text" data-keyname="hint" placeholder="Hint"> <select data-keyname="fieldtype" required> <option value="">Field Type...</option> <option value="Email">Email</option> <option value="Password">Password</option> <option value="Text">Text</option> </select> <input type="checkbox" data-keyname="required" value="true"> Required <input type="checkbox" data-keyname="search" value="true"> Searchable <input type="checkbox" data-keyname="readonly" value="true"> ReadOnly <input type="checkbox" data-keyname="autocomplete" value="true"> AutoComplete <input type="radio" data-keyname="label" value="label" name="label"> Label <input type="radio" data-keyname="unique" value="unique" name="unique"> Unique <button class="add" type="button">+</button> <button class="remove" type="button">-</button> </div> <div id="target_list"></div> <p><input type="submit" name="form.submitted" value="Submit" autofocus></p> </form> <script> function addDiv() { var pCount = $('.template-view', '#target_list').length; var pClone = $('#template_row').clone(); $('select, input, textarea', pClone).each(function(idx, el){ $el = $(this); if ((el).type == 'radio'){ $el.attr('value', pCount + '_' + $el.data('keyname')); } else { $el.attr('name', pCount + '_' + $el.data('keyname')); }; }); $('#target_list').append(pClone); pClone.show(); } function removeDiv(elem){ var pCount = $('.template-view', '#target_list').length; if (pCount != 1) { $(elem).closest('.template-view').remove(); } }; $('.add').live('click', function(){ addDiv(); }); $('.remove').live('click', function(){ removeDiv(this); }); $(document).ready(addDiv); </script>

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• Form loop db insertion + javascript altering

  - by MrStatic

  I basically need to check if there is an easier way to do this before I rewrite all the code. I have a fairly large form that I have each input named with []'s on the end so I can loop through via php for easy insertion. <input type="hidden" name="currentdate[]" value="<?php echo date('mdY'); ?>"> <td><input style="width: 50px" type="text" name="jackname[]" /></td> <td><input style="width: 20px" type="text" name="jackkey[]" /></td> <td><input style="width: 50px" type="text" name="jackbeg[]" /></td> <td><input style="width: 50px" type="text" name="jackend[]" /></td> <td><input style="width: 50px" type="text" name="jackbegveh" /></td> <td><input style="width: 50px" type="text" name="jackbegmon[]" /></td> <td><input style="width: 50px" type="text" name="jackendveh" /></td> <td><input style="width: 50px" type="text" name="jackendmon[]" /></td> <td><input style="width: 50px" type="text" name="jacktx" disabled /></td> There are quite a few more fields but you get the idea. I then use foreach ($_POST['jackname'] as $row=>$name) { $jackname = $name; $date = $_POST['currentdate'][$row]; $jackkey = $_POST['jackkey'][$row]; $jackbeg = $_POST['jackbeg'][$row]; $jackend = $_POST['jackend'][$row]; $jackbegveh = $_POST['jackbegveh'][$row]; $jackbegmon = $_POST['jackbegmon'][$row]; $jackendveh = $_POST['jackendveh'][$row]; $jackendmon = $_POST['jackendmon'][$row]; $jacktx = $_POST['jacktx'][$row]; if ($jacktx == '') { $jacktx = '0'; } if (empty($jackkey)) { echo 'Skipped empty! <br />'; } else { mysql_query("INSERT INTO `ticket_counts_jackson` VALUES('', '" . $date . "', '" . $jackname . "', '" . $jackkey . "', '" . $jackbeg . "', '" . $jackend . "', '" . $jackbegveh . "', '" . $jackbegmon . "', '" . $jackendveh . "', '" . $jackendmon . "', '" . $jacktx . "')", $mysql_link) or die(mysql_error()); echo 'Added the info the db! <br />'; } } I use the above to loop through the form and add it to the database. Now for my main question. I also want to add in some javascript to do a little math. Basically ($jackendveh - $jackbegveh) - ($jackendmon - $jackbegmon) and have that displayed in jacktx. Currently the only way I know of adding in the math calculations is to rename each input to a unique name and then rewrite my insert from 1 insert to 8 inserts.

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• Oval collision detection not working properly

  - by William

  So I'm trying to implement a test where a oval can connect with a circle, but it's not working. edist = (float) Math.sqrt(Math.pow((px + ((pwidth/2) )) - (bx + (bsize/2)), 2) + Math.pow(-((py + ((pwidth/2)) ) - (bx + (bsize/2))), 2)); and here is the full code (requires Slick2D): import org.newdawn.slick.AppGameContainer; import org.newdawn.slick.BasicGame; import org.newdawn.slick.Color; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.Input; import org.newdawn.slick.SlickException; public class ColTest extends BasicGame{ float px = 50; float py = 50; float pheight = 50; float pwidth = 50; float bx = 200; float by = 200; float bsize = 200; float edist; float pspeed = 3; Input input; public ColTest() { super("ColTest"); } @Override public void init(GameContainer gc) throws SlickException { } @Override public void update(GameContainer gc, int delta) throws SlickException { input = gc.getInput(); try{ if(input.isKeyDown(Input.KEY_UP)) py-=pspeed; if(input.isKeyDown(Input.KEY_DOWN)) py+=pspeed; if(input.isKeyDown(Input.KEY_LEFT)) px-=pspeed; if(input.isKeyDown(Input.KEY_RIGHT)) px+=pspeed; } catch(Exception e){} } public void render(GameContainer gc, Graphics g) throws SlickException { g.setColor(new Color(255,255,255)); g.drawString("col: " + col(), 10, 10); g.drawString("edist: " + edist + " dist: " + dist, 10, 100); g.fillRect(px, py, pwidth, pheight); g.setColor(new Color(255,0,255)); g.fillOval(px, py, pwidth, pheight); g.setColor(new Color(255,255,255)); g.fillOval(200, 200, 200, 200); } public boolean col(){ edist = (float) Math.sqrt(Math.pow((px + ((pwidth/2) )) - (bx + (bsize/2)), 2) + Math.pow(-((py + ((pwidth/2)) ) - (bx + (bsize/2))), 2)); if(edist <= (bsize/2) + (px + (pwidth/2))) return true; else return false; } public float rotate(float x, float y, float ox, float oy, float a, boolean b) { float dst = (float) Math.sqrt(Math.pow(x-ox,2.0)+ Math.pow(y-oy,2.0)); float oa = (float) Math.atan2(y-oy,x-ox); if(b) return (float) Math.cos(oa + Math.toRadians(a))*dst+ox; else return (float) Math.sin(oa + Math.toRadians(a))*dst+oy; } public static void main(String[] args) throws SlickException { AppGameContainer app = new AppGameContainer( new ColTest() ); app.setShowFPS(false); app.setAlwaysRender(true); app.setTargetFrameRate(60); app.setDisplayMode(800, 600, false); app.start(); } }

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• Help with Jquery and multiple forms on a page.

  - by Will

  I have a several forms that are output from a database on the same page. It works fine when I don't use ajax. When I use Jquery it will only work for the first form. Could anyone point me in the right direction please? Jquery..... $('.updateSubmit').live('click', function() { var id = $('.id').val(); var hardSoft = $('.hardSoft').val(); var brand = $('.brand').val(); var subCat = $('.subCat').val(); var subSubCat = $('.subSubCat').val(); var tProduct = $('.tProduct').val(); var description = $('.description').val(); var quantity = $('.quantity').val(); var price = $('.price').val(); var tCondition = $('.tCondition').val(); var featured = $('.featured').val(); var theData = 'id=' + id + '&hardSoft=' + hardSoft + '&brand=' + brand + '&subCat=' + subCat + '&subSubCat=' + subSubCat + '&tProduct=' + tProduct +'&description=' + description + '&quantity=' + quantity + '&price=' + price + '&tCondition=' + tCondition + '&featured=' + featured; $.ajax ({ type: 'POST', url: '/updateGrab.php', data: theData, success: function(aaa) { $('.'+id).append('<div class="forSuccess">'+aaa+'</div>'); } // end success }); // end ajax return false; }); // end click and my php form...... while ($row = $stmt->fetch()) { echo " <form action='http://www.wbrock.com/updateGrab.php' method='post' name='".$id."'> <input type='hidden' class='id' name='id' value='".$id."' /> Hardware/Software <input type='text' class='hardSoft' name='hardSoft' value='".$hardSoft."' /> Brand <input type='text' class='brand' name='brand' value='".$brand."' /> Sub-category <input type='text' class='subCat' name='subCat' value='".$subCat."' /> Sub-Sub-Cat <input type='text' class='subSubCat' name='subSubCat' value='".$subSubCat."' /> Product <input type='text' class='tProduct' name='tProduct' value='".$tProduct."' /> Description <input type='text' class='description' name='description' value='".$description."' /> Qty <input type='text' class='quantity' name='quantity' value='".$quantity."' /> Price <input type='text' class='price' name='price' value='".$price."' /> Cond <input type='text' class='tCondition' name='tCondition'value='".$tCondition."' /> Featured <input type='text' class='featured' name='featured' value='".$featured."' /> <input type='submit' id='".$id."' class='updateSubmit' name='updateSubmit' value='Update' /> </form> <span class='".$id."'></span> "; // end echo } // end while loop from database This is the first time I've posted here so sorry if its not in the right format. Thanks in advance for the help.

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• form_for called in a loop overloads IDs and associates fields and labels incorrectly

  - by Katy Levinson

  Rails likes giving all of my fields the same IDs when they are generated in a loop, and this causes trouble. <% current_user.subscriptions.each do |s| %> <div class="subscription_listing"> <%= link_to_function s.product.name, "toggle_delay(this)"%> in <%= s.calc_time_to_next_arrival %> days. <div class="modify_subscription"> <%= form_for s, :url => change_subscription_path(s) do |f| %> <%= label_tag(:q, "Days to delay:") %> <%= text_field_tag(:query) %> <%= check_box_tag(:always) %> <%= label_tag(:always, "Apply delay to all future orders") %> <%= submit_tag("Change") %> <% end %> <%= link_to 'Destroy', s, :confirm => 'Are you sure?', :method => :delete %> </div> </div> <% end %> Produces <div class="subscription_listing"> <a href="#" onclick="toggle_delay(this); return false;">Pasta</a> in 57 days. <div class="modify_subscription"> <form accept-charset="UTF-8" action="/subscriptions/7/change" class="edit_subscription" id="edit_subscription_7" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="_method" type="hidden" value="put" /><input name="authenticity_token" type="hidden" value="s5LJffuzmbEMkSrez8b3KLVmDWN/PGmDryXhp25+qc4=" /></div> <label for="q">Days to delay:</label> <input id="query" name="query" type="text" /> <input id="always" name="always" type="checkbox" value="1" /> <label for="always">Apply delay to all future orders</label> <input name="commit" type="submit" value="Change" /> </form> <a href="/subscriptions/7" data-confirm="Are you sure?" data-method="delete" rel="nofollow">Destroy</a> </div> </div> <div class="subscription_listing"> <a href="#" onclick="toggle_delay(this); return false;">Gummy Bears</a> in 57 days. <div class="modify_subscription"> <form accept-charset="UTF-8" action="/subscriptions/8/change" class="edit_subscription" id="edit_subscription_8" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="_method" type="hidden" value="put" /><input name="authenticity_token" type="hidden" value="s5LJffuzmbEMkSrez8b3KLVmDWN/PGmDryXhp25+qc4=" /></div> <label for="q">Days to delay:</label> <input id="query" name="query" type="text" /> <input id="always" name="always" type="checkbox" value="1" /> <label for="always">Apply delay to all future orders</label> <input name="commit" type="submit" value="Change" /> </form> <a href="/subscriptions/8" data-confirm="Are you sure?" data-method="delete" rel="nofollow">Destroy</a> </div> </div> And that's a problem because now no matter which "Apply delay to all future orders" I select it always very helpfully checks the first box for me. How can I override the ID without doing something ugly and un-rails-like?

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• Javascript auto calculating

  - by Josh

  I have page that automatically calculates a Total by entering digits into the fields or pressing the Plus or Minus buttons. I need to add a second input after the Total that automatically divides the total by 25. Here is the working code with no JavaScript value for the division part of the code: <html> <head> <script language="text/javascript"> function Calc(className){ var elements = document.getElementsByClassName(className); var total = 0; for(var i = 0; i < elements.length; ++i){ total += parseFloat(elements[i].value); } document.form0.total.value = total; } function addone(field) { field.value = Number(field.value) + 1; Calc('add'); } function subtractone(field) { field.value = Number(field.value) - 1; Calc('add'); } </script> </head> <body> <form name="form0" id="form0"> 1: <input type="text" name="box1" id="box1" class="add" value="0" onKeyUp="Calc('add')" onChange="updatesum()" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box1);"> <input type="button" value=" - " onclick="subtractone(box1);"> <br /> 2: <input type="text" name="box2" id="box2" class="add" value="0" onKeyUp="Calc('add')" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box2);"> <input type="button" value=" - " onclick="subtractone(box2);"> <br /> 3: <input type="text" name="box3" id="box3" class="add" value="0" onKeyUp="Calc('add')" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box3);"> <input type="button" value=" - " onclick="subtractone(box3);"> <br /> <br /> Total: <input readonly style="border:0px; font-size:14; color:red;" id="total" name="total"> <br /> Totaly Divided by 25: <input readonly style="border:0px; font-size:14; color:red;" id="divided" name="divided"> </form> </body></html> I have the right details but the formulas I am trying completely break other aspects of the code. I cant figure out how to make the auto adding and auto dividing work at the same time

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• Using ViewModel in ASP.NET MVC with FluentValidation

  - by Brian McCord

  I am using ASP.NET MVC with Entity Framework POCO classes and the FluentValidation framework. It is working well, and the validation is happening as it should (as if I were using DataAnnotations). I have even gotten client-side validation working. And I'm pretty pleased with it. Since this is a test application I am writing just to see if I can get new technologies working together (and learn them along the way), I am now ready to experiment with using ViewModels instead of just passing the actual Model to the view. I'm planning on using something like AutoMapper in my service to do the mapping back and forth from Model to ViewModel but I have a question first. How is this going to affect my validation? Should my validation classes (written using FluentValidation) be written against the ViewModel instead of the Model? Or does it need to happen in both places? One of the big deals about DataAnnotations (and FluentValidation) was that you could have validation in one place that would work "everywhere". And it fulfills that promise (mostly), but if I start using ViewModels, don't I lose that ability and have to go back to putting validation in two places? Or am I just thinking about it wrong?

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• What is the best way to identify which form has been submitted?

  - by Rupert

  Currently, when I design my forms, I like to keep the name of the submit button equal to the id of the form. Then, in my php, I just do if(isset($_POST['submitName'])) in order to check if a form has been submitted and which form has been submitted. Firstly, are there any security problems or design flaws with this method? One problem I have encountered is when I wish to overlay my forms with javascript in order to provide faster validation to the user. For example, whilst I obviously need to retain server side validation, it is more convenient for the user if an error message is displayed inline, upon blurring an input. Additionally, it would be good to provide entire form validation, upon clicking the submit button. Therefore, when the user clicks on the form's submit button, I am stopping the default action, doing my validation, and then attempting to renable the traditional submit functionality, if the validation passes. In order to do this, I am using the form.submit() method but, unfortunately, this doesn't send the submit button variable (as it should be as form.submit() can be called without any button being clicked). This means my PHP script fails to detect that the form has been submitted. What is the correct way to work around this? It seems like the standard solution is to add a hidden field into the form, upon passing validation, which has the name of form's id. Then when form.submit() is called, this is passed along in place of the submit button. However, this solution seems very ungraceful to me and so I am wondering whether I should: a) Use an alternative method to detect which form has been submitted which doesn't rely rely on passing the submit button. If so what alternative is there? Obviously, just having an extra hidden field from the start isn't any better. b) Use an alternative Javascript solution which allows me to retain my non-Javascript design. For example, is there an alternative to form.submit() which allows me to pass in extra data? c) Suck it up and just insert a hidden field using Javascript.

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• jqGrid multi-checkbox custom edittype solution

  - by gsiler

  For those of you trying to understand jqGrid custom edit types ... I created a multi-checkbox form element, and thought I'd share. This was built using version 3.6.4. If anyone has a more efficient solution, please pass it on. Within the colModel, the appropriate edit fields look like this: edittype:'custom' editoptions:{ custom_element:MultiCheckElem, custom_value:MultiCheckVal, list:'Check1,Check2,Check3,Check4' } Here are the javascript functions (BTW, It also works – with some modifications – when the list of checkboxes is in a DIV block): //———————————————————— // Description: // MultiCheckElem is the "custom_element" function that builds the custom multiple check box input // element. From what I have gathered, jqGrid calls this the first time the form is launched. After // that, only the "custom_value" function is called. // // The full list of checkboxes is in the jqGrid "editoptions" section "list" tag (in the options // parameter). //———————————————————— function MultiCheckElem( value, options ) { //———- // for each checkbox in the list // build the input element // set the initial "checked" status // endfor //———- var ctl = ''; var ckboxAry = options.list.split(','); for ( var i in ckboxAry ) { var item = ckboxAry[i]; ctl += '<input type="checkbox" '; if ( value.indexOf(item + '|') != -1 ) ctl += 'checked="checked" '; ctl += 'value="' + item + '"> ' + item + '</input><br />&nbsp;'; } ctl = ctl.replace( /<br />&nbsp;$/, '' ); return ctl; } //———————————————————— // Description: // MultiCheckVal is the "custom_value" function for the custom multiple check box input element. It // appears that jqGrid invokes this function the first time the form is submitted and, the rest of // the time, when the form is launched (action = set) and when it is submitted (action = 'get'). //———————————————————— function MultiCheckVal(elem, action, val) { var items = ''; if (action == 'get') // the form has been submitted { //———- // for each input element // if it's checked, add it to the list of items // endfor //———- for (var i in elem) { if (elem[i].tagName == 'INPUT' && elem[i].checked ) items += elem[i].value + ','; } // items contains a comma delimited list that is returned as the result of the element items = items.replace(/,$/, ''); } else // the form is launched { //———- // for each input element // based on the input value, set the checked status // endfor //———- for (var i in elem) { if (elem[i].tagName == 'INPUT') { if (val.indexOf(elem[i].value + '|') == -1) elem[i].checked = false; else elem[i].checked = true; } } // endfor } return items; }

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• Jquery and live act wired but act ok after force refresh in IE

  - by Y.G.J

  hi guys - somthing is wrong with my code and i can't get what it is... i have a div id = "personaltab" i have a form in side it to login the user with username and password. if success the jquery empty the div and puts in the form of the bidding. if the user try to bid the other ajax that assign to the button is working but for some reason skips the empty and just adding the responded ajax to the div i have checked that in IE and chrome and it is working fine in chrome here are my codes $("#login").click(function() { var id = $("input#pid").val(); var user = $("input#puser").val(); var pass = $("input#ppass").val(); var dataString = 'id='+ id + '&user='+ user + '&pass=' + pass; if (user == "") { alert("error"); $("input#puser").focus(); return false; } if (pass == "") { alert("error"); $("input#ppass").focus(); return false; } $.ajax({ type: "POST", url: "loginpersonal.asp", data: dataString, success: function(msg) { if (msg=="False") { alert("error"); $("#personaltab").show(); } else { $("#personaltab").fadeOut("normal",function(){ $("#personaltab").empty(); $("#personaltab").append(msg); $("#personaltab").slideDown(); }); } }, error: function (XMLHttpRequest, textStatus, errorThrown) { alert('error'); } }); return false; }); $("#sendbid").live("click", function(){ var startat = $("input[name=startat]").val(); var sprice = $("input[name=sprice]").val(); if (parseInt(sprice)<=parseInt(startat)) { alert("error"); $("input[name=sprice]").focus(); return false; } else { var payment = $("select[name=payment]").val(); if ($('input[name=credit]').is(':checked') ){ var credit = true; } var prodid = $("input[name=id]").val(); var dataString = 'id='+ prodid + '&price='+ sprice + '&payment=' + payment + '&credit=' + credit; $.ajax({ type: "POST", url: "loginpersonal.asp", data: dataString, success: function(msg) { $("#personaltab").empty(); $("#personaltab").append(msg); $("#personaltab").show(); }, error: function (XMLHttpRequest, textStatus, errorThrown) { alert('error'); } }); } return false; });

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