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• Branching logic in an MVC view

  - by Alex Kilpatrick

  I find myself writing a lot of code in my views that looks like the code below. In this case, I want to add some explanatory HTML for a novice, and different HTML for an expert user. <% if (ViewData["novice"] != null ) { % some extra HTML for a novice <% } else { % some HTML for an expert <% } % This is presentation logic, so it makes sense that it is in a view vs the controller. However, it gets ugly really fast, especially when ReSharper wants to move all the braces around to make it even uglier (is there a way to turn that off for views?). My question is whether this is proper, or should I branch in the controller to two separate views? If I do two views, I will have a lot of duplicated HTML to maintain. Or should I do two separate views with a shared partial view of the stuff that is in common?

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• How can I request local pages in the background of an ASP.NET MVC app?

  - by flipdoubt

  My ASP.NET MVC app needs to run a set of tasks at startup and in the background at a regular interval. I have implemented each task as a controller action and listed the app-relative path to the action in the database. I implemented a TaskRunner process that gets the urls from the database and requests each one at a regular interval using WebRequest.Create, but this throws a UriFormatException. I cannot use this answer or any code that plucks values from HttpContext.Current.Request without getting an HttpException with the message "Request is not available in this context". The Request object is not available because my code uses System.Threading.Timer to do background processing, as recommended here. Here are my questions: Is there really no way to make local web requests within an ASP.NET web app? Is there really no way to dynamically ascertain the root path to the web app even using static dependencies in ASP.NET? I was trying to avoid storing the app's root path in the database (as FogBugz does with its "Maintenance Path"), but is this best option?

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• Trying to get JQuery Autocomplete working on Asp.Net page.

  - by JasonMHirst

  Can someone shed some light on the problem please: I have the following: $(document).ready(function () { $("#txtFirstContact").autocomplete({url:'http://localhost:7970/Home/FindSurname' }); }); On my Asp.Net page. The http request is a function on an MVC Controller and that code is here: Function FindSurname(ByVal surname As String, ByVal count As Integer) Dim sqlConnection As New SqlClient.SqlConnection sqlConnection.ConnectionString = My.Settings.sqlConnection Dim sqlCommand As New SqlClient.SqlCommand sqlCommand.CommandText = "SELECT ConSName FROM tblContact WHERE ConSName LIKE '" & surname & "%'" sqlCommand.Connection = sqlConnection Dim ds As New DataSet Dim da As New SqlClient.SqlDataAdapter(sqlCommand) da.Fill(ds, "Contact") sqlConnection.Close() Dim contactsArray As New List(Of String) For Each dr As DataRow In ds.Tables("Contact").Rows contactsArray.Add(dr.Item("ConSName")) Next Return Json(contactsArray, JsonRequestBehavior.AllowGet) End Function As far as I'm aware, the Controller is returning JSON data, however I don't know if the Function Parameters are correct, or indeed if the format returned is interprettable by the AutoComplete plugin. If anyone can assist in the matter I'd really appreciate it.

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• Randomly Losing Session Variables Only In Google Chrome & URL Rewriting

  - by Toby

  Using Google Chrome, I'm seemingly losing/corrupting session data when navigating between pages (PHP 5.0.4, Apache 2.0.54). The website works perfectly fine in IE7/8, Firefox, Safari & Opera. The issue is only with Google Chrome. I narrowed down the problem. I'm using search friendly URL's, and hiding my front controller (index.php) via a .htaccess file. So the URL looks like: www.domain.com/blah/blah/ Here's the .htaccess file contents: Options +FollowSymlinks RewriteEngine on #allow cool urls RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*) index.php [L] #allow to have Url without index.php If I remove the .htaccess file, and expose the front controller in the URL: www.domain.com/index.php/blah/blah/, Chrome works perfectly fine. Any thoughts ideas? I'm thinking it's some kind of problem with how Chrome identifies what cookie to use and send to the server? This happens in Chrome 4 & 5. Thanks!

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• Check if row already exists, if so tell the referenced table the id

  - by flhe

  Let's assume I have a table magazine: CREATE TABLE magazine ( magazine_id integer NOT NULL DEFAULT nextval(('public.magazine_magazine_id_seq'::text)::regclass), longname character varying(1000), shortname character varying(200), issn character varying(9), CONSTRAINT pk_magazine PRIMARY KEY (magazine_id) ); And another table issue: CREATE TABLE issue ( issue_id integer NOT NULL DEFAULT nextval(('public.issue_issue_id_seq'::text)::regclass), number integer, year integer, volume integer, fk_magazine_id integer, CONSTRAINT pk_issue PRIMARY KEY (issue_id), CONSTRAINT fk_magazine_id FOREIGN KEY (fk_magazine_id) REFERENCES magazine (magazine_id) MATCH SIMPLE ON UPDATE NO ACTION ON DELETE NO ACTION ); Current INSERTS: INSERT INTO magazine (longname,shotname,issn) VALUES ('a long name','ee','1111-2222'); INSERT INTO issue (fk_magazine_id,number,year,volume) VALUES (currval('magazine_magazine_id_seq'),'8','1982','6'); Now a row should only be inserted into 'magazine', if it does not already exist. However if it exists, the table 'issue' needs to get the 'magazine_id' of the row that already exists in order to establish the reference. How can i do this? Thx in advance!

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• AjaxPro and ActionChart.ashx are not working together?

  - by jeneesh

  Hi, am using actionchart in one of my asp.net 2.0 application. also now am using "AjaxPro.AjaxHandlerFactory,AjaxPro.2" in this application for that i have added one handler in web.config file. <httpHandlers> <!--<add verb="" path=".ashx" type="AjaxPro.AjaxHandlerFactory,AjaxPro.2"/>--> </httpHandlers> </system.web> like that. After that, my action chart is not working!!! But if am commenting the handler part, action chart will work, but ajaxPro willnot work. Please help me ASAP. I have to resolve by the end of today [email protected]

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• Kohana v2 - problem with routes

  - by yoda

  Hi, I'm attempting to set some custom routes in Kohana v2. What I'm looking for is some method that allow the system to : follow a pre-defined name to it's related root; redirect the non-matched url's into another controller; To give you a more clear view over the problem, I want the first url parameter to be associated to certain pages (contacts, home, services, about us, etc), and those urls who doesn't match the previous pages would be routed into a controller called products, in order to determine if the first url parameter regards a product name. Here's a sample of what I have : $config['_default'] = 'home'; $config['([a-zA-Z]+)'] = 'products/showcat/$1'; What am I missing here? Thanks in advance!

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• How can I include .pdf files when I publish but not in a search and replace in visual studio?

  - by Mike

  More specifically my problem is if I include a pdf in my project and set its build action to content so it gets copied to the server when I publish, is there a way to exclude it from visual studios search and replace feature. Would a post build action be a solution to this? I just don't want anybody to do a global search and replace in my project and mess up the pdfs... I know I just said a mouth full so let me know if you need clarification. Thanks!!!

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• Tab Bar disappears below the bottom of the screen

  - by Manu

  Hi, In my application I'm using a Navigation Controller to push one view that loads a Tab Bar Controller and a custom Navigation Bar as well. The problem is that the Tab Bar disappears below the bottom of the screen, and I don't know what's causing the problem. If I load a simple Tab Bar in the next view, it positions itself correctly... but what I need is a Tab Bar Controller, and in that case the Tab Bar disappears below the bottom. I have tried changing the view and size properties of the Tab Bar, but that did not solve the problem. I also realised that the images and text of the tabs don't show (I have set up the "favourites" and "contacts" images and text, and they are big enough and should be visible on the top side of the tab, but they are not). Both tabs work perfectly, by the way. There is an image here. I load the Tab Bar with the following code: - (void)viewDidLoad { [super viewDidLoad]; myTabBarController = [[UITabBarController alloc] init]; SettingsViewController* tab1 = [[SettingsViewController alloc] init]; AboutViewController* tab2 = [[AboutViewController alloc] init]; NSArray* controllers = [NSArray arrayWithObjects:tab1, tab2, nil]; myTabBarController.viewControllers = controllers; [self.view insertSubview:myTabBarController.view belowSubview:myNavigationBar]; } It doesn't matter if I remove the Navigation Bar or not. I have tested using this instead: [self.view addSubview:myTabBarController.view]; ... forgetting about the Navigation Bar, but the Tab Bar still goes under the bottom. I don't know if the problem is in one of my NIB files or in how I load the view (although I do this as I read in the Apple's SDK documentation). Any ideas? Another question would be... do you know how could I change the title of my Navigation Bar when I select the second tab? I imagine I would have to do it in viewDidLoad in AboutViewController.m, would that be correct? Thanks for you time!

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• Where to place a query that should be included in all or most views

  - by Andrew

  In my application I have a sidebar which I want to include a list of pages. Cheating on the MVC setup, I can pretty easily display this as follows (in HAML): # layouts/_sidebar.html.haml %h4 Pages %ul.pages - for page in Page.all %li= link_to page.title, page Now, this works just fine, but clearly it's against the convention. The problem is, this shared layout partial is present in most (but not all) views, and therefore to serve the pages from the controller layer would mean needing to inject an instance variable into almost every controller action in the application. That isn't very clean or DRY. So, how would you handle this kind of situation? Is there a clean, DRY place to put this kind of a simple query that respects Rails MVC convention better?

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• Get data from html form to ruby in Ruby on Rails

  - by Maestro1024

  Get data from html form to ruby in Ruby on Rails I have some html like this <html> <h1>Text to PDF</h1> <textarea name="comments" cols="40" rows="5"> Enter your Text here... </textarea><br> <input type="submit" value="Submit" /> </form> </body> </html> I want to give the value of the text into the controller for this page/view. How do I do this with rails? I am new to rails, what is the mechanism for this? I don't need to write to the database just want to hand it to the controller. If there is a good tutorial for this sort of thing that would be great, I am not convince I am approaching this correctly.

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• Accessing Session and IPrinciple data in a Master View in Asp.Net MCV

  - by bplus

  I currently have a abstract controller class that I all my controllers inherit from. In my master page I want to be able to access some data that will be in Session and also the currently user (IPrinciple). I read that I could use the contructor of by abstract base controller class, that is I could do something like public BaseController() { ViewData["SomeData"] = Session["SomeData"]; ViewData["UserName"] = this.User.Identity.Name; } I could then access ViewData["UserName"] etc from my master page. My problem is that both Session and User are null at this point. Does anybody know of a different approach? Thanks in advance.

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• Spring 3 MVC : problem with form:errors and bindingresult

  - by Maxime ARNSTAMM

  Hi, I want to validate my inputs but i can't make it work : nothing appear on the page. My project is in java 5, so no JSR303 (@Valid). My only solution, if i'm not mistaken, is to use BindingResult. My controller : @Controller public class MyController { @RequestMapping(method = RequestMethod.POST, value = "myPage.html") public void myHandler(MyForm myForm, BindingResult result, Model model) { result.reject("field1", "error message 1"); } } My jsp : <form:form commandName="myForm" method="post"> <label>Field 1 : </label> <form:input path="field1" /> <form:errors path="field1" /> <input type="submit" value="Post" /> </form:form> What am i missing ? Thanks !

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• How can I optimize MVC and IIS pipeline to obtain higher speed?

  - by Andy

  Hi, I am doing performance tweaking of a simple app that uses MVC on IIS 7.5. I have a StopWatch starting up in Application_BeginRequest and I take a snapshot at Controller.OnActionExecuting. So I measure the time spend in the entire IIS pipeline: from request receipt to the moment execution finally gets to my controller. I obtain 700 microseconds on my 3GHz quad-core (project compiled Release x64), and I wonder where the bottleneck is, especially hearing some people say that one can get up to 8000 page loads per second with MVC. How can I optimize MVC and IIS pipeline to obtain higher speed?

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• Testing methods called on yielded object

  - by Todd R

  I have the following controller test case: def test_showplain Cleaner.expect(:parse).with(@somecontent) Cleaner.any_instance.stubs(:plainversion).returns(@returnvalue) post :showplain, {:content => @somecontent} end This works fine, except that I want the "stubs(:plainversion)" to be an "expects(:plainversion)". Here's the controller code: def showplain Cleaner.parse(params[:content]) do | cleaner | @output = cleaner.plainversion end end And the Cleaner is simply: class Cleaner ### other code and methods ### def self.parse(@content) cleaner = Cleaner.new(@content) yield cleaner cleaner.close end def plainversion ### operate on @content and return ### end end Again, I can't figure out how to reliably test the "cleaner" that is made available from the "parse" method. Any suggestions?

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• ActiveRecord Create (not !) Throwing Exception on Validation

  - by myferalprofessor

  So I'm using ActiveRecord model validations to validate a form in a RESTful application. I have a create action that does: @association = Association.new and the receiving end of the form creates a data hash of attributes from the form parameters to save to the database using: @association = user.associations.create(data) I want to simply render the create action if validation fails. The problem is that the .create (not !) method is throwing an exception in cases where the model validation fails. Example: validates_format_of :url, :with => /(^$)|(^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$)/ix, :message => "Your url doesn't seem valid." in the model produces: ActiveRecord::RecordInvalid Exception: Validation failed: Url Your url doesn't seem valid. I thought .create! is supposed throw an exception whereas .create is not. Am I missing something here? Ruby 1.8.7 patchlevel 173 & rails 2.3.3

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• iPhone - how to be notified of call completion

  - by ecodan

  Hi- I'm developing an application that needs to take action on completed phone calls, preferably right after the call ends but minimally once per day. I've read up on the new CoreTelphony framework, and it seems I can get call events if my app is active, but I don't see how to launch/wake my app when a call ends if my app is not the foreground app. I also don't see how any of the new pseudo-background "modes" would allow my app to listen for these events in the background. Do any of you know how this might be done? If post-call processing isn't possible, then I'd like to figure out a way to automatically wake my app up once per day, pull all of the call events since the last wakeup, and process them. I know how I might do this with Push or Local notifications, but my understanding is that those require user action to continue; in this case, I just want the processing to happen automatically. Is there a mechanism that would enable this? Thanks, Dan

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• CodeIgniter: Weird echo of $config coming back when I load Email Library

  - by k00k

  Version info: CI version 1.7.2 - PHP 5.3.1 - Apache2 - Mac OSX 10.6.3 For some reason, when I load CI's email library, either in my controller, or in autoload.php, it automatically and immediately echoes the config info like so: $config['protocol'] = 'sendmail'; $config['mailpath'] = '/usr/sbin/sendmail'; $config['charset'] = 'iso-8859-1'; $config['wordwrap'] = TRUE If I autoload the email library in autoload.php, it is echoed before anything else in my source/page. If I call it explicitly within my controller, it's echoed at that exact point. I'm stumped, never seen that before. Any ideas on how to surpress/eliminate?

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• best approach to do jsf form validation

  - by gurupriyan.e

  If I have many input controls in a form (There are separate validators for each of these input controls - like required,length and so on ) , there is a command button which submits the form and calls an action method. The requirement is - though the input control values are , say , individually okay - the combination of these values should be okay to process them together after the form submission - Where do i place the code to validate them together? 1) Can i add a custom validator for the command button and validate the combination together? like validate(FacesContext arg0, UIComponent arg1, Object value) but even then I will not have values of the other input controls except for the command button's/component's value right ? 2) can i do the validation of the combination in the action method and add validation messages using FacesMessage ? or do you suggest any other approach? Thanks for your time.

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• Enable/disable zoom on iPhone safari with Javascript?

  - by msqr

  I have 1 page which has 2 DIV elements which is shown/hidden based on user click on action buttons with javascript, I would like to toggle scaling on action button click. I tried with below javascript and it is changing viewport meta but getting no effect. Any suggestions? Blockquote var ViewPortAllowZoom = 'width=device-width;'; var ViewPortNoZoom = 'width=device-width; initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=no;'; function AllowZoom(flag) { if (flag == true) { $('meta[name*=viewport]').attr('content', ViewPortAllowZoom); } else { $('meta[name*=viewport]').attr('content', ViewPortNoZoom); } }

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• Getting JSON data on server side with Grails

  - by maximus

  Once I post JSON data to a url in Grails, how can I get access to that data inside of the controller?

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• How can I use MVC ideas without using classes?

  - by jpjp

  As of right now, I am still shaky on classes, so I don't want to use any classes for my site. I'm still practicing with classes. But how can I implement the MVC idea without classes? Would this work for a MVC? index.php (the view) index_controller.php index_model.php Is this right for what a MVC should be? View: show html, css, forms Controller: get $_POST from forms and any data from the user, get info from db Model: do all the functions, insert/delete in db, etc Basically separate the HTML/css for the view, all the data collecting for the controller, and the logic for the model. And just connect them all using require_once.

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• [js] how combine to functions on submit?

  - by Mahmoud

  hey there, as you can see, i have to functions first to check if all forms are not empty and the second function is to verify the captcher, when i combine them together both work at the same time, i want to first to verify the first function, when that function returns true then the other function starts, here is the code that i used on form <form action="reg.php" method="post" enctype="application/x-www-form-urlencoded" onsubmit=" Checking(this); return jcap();" > As you can see both function execute at the same time so i tried this <form action="reg.php" method="post" enctype="application/x-www-form-urlencoded" onsubmit=" if(Checking(this) == true ){ return jcap();}" > is bypass both

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• How to avoid Black Screen on starting an application

  - by ganesh

  hi, When i start my application initially ,i get a black screen which stays for a few seconds before my main activity starts.In case of iphone an image with name default is displayed for that split second.I am not sure how to do the same in android.Any help .I tried as below in vain <activity android:name=".Index" android:label="@string/app_name" android:screenOrientation="portrait" android:theme="@drawable/defaultimage"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity>

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• PHP / Zend Framework: Which object would handle a complex table join?

  - by Thomas

  I think one of the more difficult concepts to understand in the Zend Framework is how the Table Data Gateway pattern is supposed to handle multi-table joins. Most of the suggestions I've seen claim that you simply handle the joins using a $db-select()... Zend DB Select with multiple table joins Joining Tables With Zend Framework PHP Joining tables wthin a model in Zend Php Zend Framework Db Select Join table help Zend DB Select with multiple table joins My question is: Which object is best suited to handle this kind of multi-table select statement? I feel like putting it in the model would break the 1-1 Table Data Gateway pattern between the class and the db table. Yet putting it in the controller seems wrong because why would a controller handle a SQL statement? Anyway, I feel like ZF makes handling datasets from multiple tables more difficult than it needs to be. Any help you can provide is great... Thanks!

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