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• Apache and multiple tomcats proxy

  - by Sebb77

  I have 1 apache server and two tomcat servers with two different applications. I want to use the apache as a proxy so that the user can access the application from the same url using different paths. e.g.: localhost/app1 --> localhost:8080/app1 localhost/app2 --> localhost:8181/app2 I tried all 3 mod proxy of apache (mod_jk, mod_proxy_http and mod_proxy_ajp) but the first application is working, whilst the second is not accessible. This is the apache configuration I'm using: ProxyPassMatch ^(/.*\.gif)$ ! ProxyPassMatch ^(/.*\.css)$ ! ProxyPassMatch ^(/.*\.png)$ ! ProxyPassMatch ^(/.*\.js)$ ! ProxyPassMatch ^(/.*\.jpeg)$ ! ProxyPassMatch ^(/.*\.jpg)$ ! ProxyRequests Off ProxyPass /app1 ajp://localhost:8009/ ProxyPassReverse /app1 ajp://localhost:8009/ ProxyPass /app2 ajp://localhost:8909/ ProxyPassReverse /app2 ajp://localhost:8909/ With the above, I manage to view the tomcat root application using localhost/app1, but I get "Service Temporarily Unavailable" (apache error) when accessing app2. I need to keep the tomcat servers separate because I need to restart one of the applications often and it is not an option to save both apps on the same tomcat. Can someone point me out what I'm doing wrong? Thank you all.

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• Case class copy() method abstraction.

  - by Joa Ebert

  I would like to know if it is possible to abstract the copy method of case classes. Basically I have something like sealed trait Op and then something like case class Push(value: Int) extends Op and case class Pop() extends Op. The first problem: A case class without arguments/members does not define a copy method. You can try this in the REPL. scala> case class Foo() defined class Foo scala> Foo().copy() <console>:8: error: value copy is not a member of Foo Foo().copy() ^ scala> case class Foo(x: Int) defined class Foo scala> Foo(0).copy() res1: Foo = Foo(0) Is there a reason why the compiler makes this exception? I think it is rather unituitive and I would expect every case class to define a copy method. The second problem: I have a method def ops: List[Op] and I would like to copy all ops like ops map { _.copy() }. How would I define the copy method in the Op trait? I get a "too many arguments" error if I say def copy(): this.type. However, since all copy() methods have only optional arguments: why is this incorrect? And, how do I do that correct? By making another method named def clone(): this.type and write everywhere def clone() = copy() for all the case classes? I hope not.

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• SQL Server - stored procedure suddenly become slow

  - by Barguast

  I have written a stored procedure that, yesterday, typically completed in under a second. Today, it takes about 18 seconds. I ran into the problem yesterday as well, and it seemed to be solved by DROPing and re-CREATEing the stored procedure. Today, that trick doesn't appear to be working. :( Interestingly, if I copy the body of the stored procedure and execute it as a straightforward query it completes quickly. It seems to be the fact that it's a stored procedure that's slowing it down...! Does anyone know what the problem might be? I've searched for answers, but often they recommend running it through Query Analyser, but I don't have have it - I'm using SQL Server 2008 Express for now. The stored procedure is as follows; ALTER PROCEDURE [dbo].[spGetPOIs] @lat1 float, @lon1 float, @lat2 float, @lon2 float, @minLOD tinyint, @maxLOD tinyint, @exact bit AS BEGIN -- Create the query rectangle as a polygon DECLARE @bounds geography; SET @bounds = dbo.fnGetRectangleGeographyFromLatLons(@lat1, @lon1, @lat2, @lon2); -- Perform the selection if (@exact = 0) BEGIN SELECT [ID], [Name], [Type], [Data], [MinLOD], [MaxLOD], [Location].[Lat] AS [Latitude], [Location].[Long] AS [Longitude], [SourceID] FROM [POIs] WHERE NOT ((@maxLOD < [MinLOD]) OR (@minLOD > [MaxLOD])) AND (@bounds.Filter([Location]) = 1) END ELSE BEGIN SELECT [ID], [Name], [Type], [Data], [MinLOD], [MaxLOD], [Location].[Lat] AS [Latitude], [Location].[Long] AS [Longitude], [SourceID] FROM [POIs] WHERE NOT ((@maxLOD < [MinLOD]) OR (@minLOD > [MaxLOD])) AND (@bounds.STIntersects([Location]) = 1) END END The 'POI' table has an index on MinLOD, MaxLOD, and a spatial index on Location.

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• C++ std::stringstream seemingly causes thread to hang or die under SunOS

  - by stretch

  I have an application developed under Linux with GCC 4.2 which makes quite heacy use of stringstreams to wrap and unwrap data being sent over the wire. (Because the Grid API I'm using demands it). Under Linux everything is fine but when I deploy to SunOS (v5.10 running SPARC) and compile with GCC 3.4.6 the app hangs when it reaches the point at which stringstreams are used. In more detail: The main thread accepts requests from clients and starts a new pthread to handle each request. The child thread uses stringstreams to pack data. When the child thread gets to that point it seems to hang for a second and then die. The main thread is unaffected. Are there any known issues with stringstream and GCC 3.4.6 or SunOS or SPARCs? I didn't find anything yet... Can anyone suggest a better way to pack and unpack large amounts of data a strings or byte streams? Apologies for not posting code but this to me seems more involved than a simple syntax error. All the same, the thread crashes: std::stringstream mystringstream; //not here mystringstream << "some data: "; //but here That is, I can declare the stringstream but when I try to use it something goes wrong.

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• I am trying to find how many vowels and consonants in my string in C

  - by John Walter

  #include <stdio.h> #include <string.h> int main() { int i; int counter=0, counter2=0; char *s; char name[30]; char vowel[6] = "AEIOU"; char consonants[21] = "BCDFGHJKLMNPQRSTVWXYZ"; printf ("input the string: "); scanf ("%s", name); printf ("The string is %s\n", name); for (i=0; name[i]!='\0'; i++) { if (s = strchr(vowel, name[i])) { counter++; } else if (s =strchr(consonants, name[i])) { counter2++; } printf ("First counter is %d\n", counter); printf ("The second counter is %d\n", counter2); return 0; } } And the question is, what is wrong with my code? why counter is not working? Because I tried a lot of ways, and nothing works, maybe someone can explain for me.

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• P0ST variables to web server?

  - by OverTheRainbow

  Hello I've been trying several things from Google to POST data to a web server, but none of them work: I'm still stuck at how to convert the variables into the request, considering that the second variable is an SQL query so it has spaces. Does someone know the correct way to use a WebClient to POST data? I'd rather use WebClient because it requires less code than HttpWebRequest/HttpWebResponse. Here's what I tried so far: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim wc = New WebClient() 'convert data wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded") Dim postData = String.Format("db={0}&query={1}", _ HttpUtility.UrlEncode("books.sqlite"), _ HttpUtility.UrlEncode("SELECT id,title FROM boooks")) 'Dim bytArguments As Byte() = Encoding.ASCII.GetBytes("db=books.sqlite|query=SELECT * FROM books") 'POST query Dim bytRetData As Byte() = wc.UploadData("http://localhost:9999/get", "POST", postData) RichTextBox1.Text = Encoding.ASCII.GetString(bytRetData) Exit Sub Dim client = New WebClient() Dim nv As New Collection nv.Add("db", "books.sqlite") nv.Add("query", "SELECT id,title FROM books") Dim address As New Uri("http://localhost:9999/get") 'Dim bytRetData As Byte() = client.UploadValues(address, "POST", nv) RichTextBox1.Text = Encoding.ASCII.GetString(bytRetData) Exit Sub 'Dim wc As New WebClient() 'convert data wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded") Dim bytArguments As Byte() = Encoding.ASCII.GetBytes("db=books.sqlite|query=SELECT * FROM books") 'POST query 'Dim bytRetData As Byte() = wc.UploadData("http://localhost:9999/get", "POST", bytArguments) RichTextBox1.Text = Encoding.ASCII.GetString(bytRetData) Exit Sub End Sub Thank you.

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• Same jQuery code returns two different results – Submit Button Text

  - by Lijo

  I have two jQuery codes - http://jsfiddle.net/Lijo/CXGX7/7/ and http://jsfiddle.net/Lijo/CXGX7/8/ . The first code returns undefined whereas the second code returns text of button. QUESTIONS What is the reason for this difference in result? Why is the first code not returning expected text of button? Note: I verified that both are using same version of jQuery (by an alert of jQuery) alert($.fn.jquery); CODE <html xmlns="http://www.w3.org/1999/xhtml"> <head><title> </title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.8.1.js"></script> <script type="text/javascript"> alert($('.myButton').attr("value")); </script> </head> <body> <form method="post" action="Test.aspx" id="form1"> <div class="aspNetHidden"> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTE0MDM4MzYxMjNkZMycQvsYQ+GPFsQHoQ8j/8vEo2vQbqkhfgPc60kxXaQO" /> </div> <div class="aspNetHidden"> <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWAwKqxqqrCgLi/JazDQKM54rGBqgaroRQTXJkD1LyUlVxAmLRCNfTGVe73swQBMemBtvN" /> </div> <div> <input name="txtEmpName" type="text" id="txtEmpName" /> <input type="submit" name="Button1" value="Submit" id="Button1" class="myButton" /> </div> </form> </body> </html> REFERENCES Retrieve Button value with jQuery How to determine and print jQuery version?

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• iPhone: Strange Movement of Two UIImageView "Sprites"

  - by David Pollak

  I have two UIImageViews moving like sprites on a superview. Each imageview moves properly by itself but when I put both imageviews on the superview at the same time, their individual movement becomes strangely restricted to two different areas of the screen. They will not touch even programmed to the same coordinates. This is my movement code for the first imageView: - (void)viewDidLoad { [super viewDidLoad]; pos = CGPointMake(14.0, 7.0); [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(onTimer) userInfo:nil repeats:YES]; } - (void) onTimer { pallone.center = CGPointMake(pallone.center.x+pos.x, pallone.center.y+pos.y); if(pallone.center.x > 320 || pallone.center.x < 0) pos.x = -pos.x; if(pallone.center.y > 480 || pallone.center.y < 0) pos.y = -pos.y; } and for the second imageview: - (IBAction)spara{ cos = CGPointMake(8.0, 4.0); [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(inTimer) userInfo:nil repeats:YES]; } - (void)inTimer{ bomba.center = CGPointMake(bomba.center.x+pos.x, bomba.center.y+pos.y); if(bomba.center.x > 50 || bomba.center.x < 0) pos.x = -pos.x; if(bomba.center.y > 480 || bomba.center.y < 0) pos.y = -pos.y; } Why causes this strange behavior? Thanks for your help. I am a newbie.

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• Passing in a lambda to a Where statement

  - by sonicblis

  I noticed today that if I do this: var items = context.items.Where(i => i.Property < 2); items = items.Where(i => i.Property > 4); Once I access the items var, it executes only the first line as the data call and then does the second call in memory. However, if I do this: var items = context.items.Where(i => i.Property < 2).Where(i => i.Property > 4); I get only one expression executed against the context that includes both where statements. I have a host of variables that I want to use to build the expression for the linq lambda, but their presence or absence changes the expression such that I'd have to have a rediculous number of conditionals to satisfy all cases. I thought I could just add the Where() statements as in my first example above, but that doesn't end up in a single expression that contains all of the criteria. Therefore, I'm trying to create just the lambda itself as such: //bogus syntax if (var1 == "something") var expression = Expression<Func<item, bool>>(i => i.Property == "Something); if (var2 == "somethingElse") expression = expression.Where(i => i.Property2 == "SomethingElse"); And then pass that in to the where of my context.Items to evaluate. A) is this right, and B) if so, how do you do it?

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• array_splice() - Numerical Offsets of Associative Arrays

  - by Alix Axel

  I'm trying to do something but I can't find any solution, I'm also having some trouble putting it into works so here is a sample code, maybe it'll be enough to demonstrate what I'm aiming for: $input = array ( 'who' => 'me', 'what' => 'car', 'more' => 'car', 'when' => 'today', ); Now, I want to use array_splice() to remove (and return) one element from the array: $spliced = key(array_splice($input, 2, 1)); // I'm only interested in the key... The above will remove and return 1 element (third argument) from $input (first argument), at offset 2 (second argument), so $spliced will hold the value more. I'll be iterating over $input with a foreach loop, I know the key to be spliced but the problem is I don't know its numerical offset and since array_splice only accepts integers I don't know what to do. A very dull example: $result = array(); foreach ($input as $key => $value) { if ($key == 'more') { // Remove the index "more" from $input and add it to $result. $result[] = key(array_splice($input, 2 /* How do I know its 2? */, 1)); } } I first though of using array_search() but it's pointless since it'll return the associative index.... How do I determine the numerical offset of a associative index?

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• How do I link one listview to another to create a football league table?

  - by Richard Nixon

  Hi I am creating a football system in windows forms c#. I have one listview where data is entered. I have 4 columns, 2 with team names linked to combo boxes and 2 with the scores linked to numericupdown controls. There are 3 buttons to add the results, Remove and clear. the code is below: private void addButton_Click(object sender, EventArgs e) { { ListViewItem item = new ListViewItem(comboBox1.SelectedItem.ToString()); item.SubItems.Add(numericUpDown1.Value.ToString()); item.SubItems.Add(numericUpDown2.Value.ToString()); item.SubItems.Add(comboBox2.SelectedItem.ToString()); listView1.Items.Add(item); } } private void clearButton_Click(object sender, EventArgs e) { listView1.Items.Clear(); } private void removeButton_Click(object sender, EventArgs e) { foreach (ListViewItem itemSelected in listView1.SelectedItems) { listView1.Items.Remove(itemSelected); } } I have another listview that i want to link the first one to. The second one is a usual english football league table and i want to use maths to add up the games played and the points etc. please help. cheers

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• Applications result affected by another running application.

  - by Jamie Keeling

  This is a follow on from my previous question although this is about something else. I've been having a problem where for some reason my message that I pass from one process to another only displays the first letter, in this case "M". My application is based on a MSDN sample so to make sure I hadn't missed something I create a separate solution, added the MSDN sample (without any changes for my needs) and unsurprisingly it works fine. Now for the weird bit, when I run the MSDN sample running (as in debugging) and have my own application running, the text prints out fine without any problems. The second I run my on its own without the original MSDN sample being open, and it fails to work and only shows an "M". I've looked in the debugger and don't seem to notice anything suspicious (it's a slightly dated picture, I've fixed the data type inconsistency). Can anyone provide a solution for this? I've never encountered anything like this before. To look at my source code it's easier to just look at the link I posted at the top of the question, there's no point in me posting it twice. Thank you for any help.

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• How to hand-over a TCP listening socket with minimal downtime?

  - by Shtééf

  While this question is tagged EventMachine, generic BSD-socket solutions in any language are much appreciated too. Some background: I have an application listening on a TCP socket. It is started and shut down with a regular System V style init script. My problem is that it needs some time to start up before it is ready to service the TCP socket. It's not too long, perhaps only 5 seconds, but that's 5 seconds too long when a restart needs to be performed during a workday. It's also crucial that existing connections remain open and are finished normally. Reasons for a restart of the application are patches, upgrades, and the like. I unfortunately find myself in the position that, every once in a while, I need to do this kind of thing in production. The question: I'm looking for a way to do a neat hand-over of the TCP listening socket, from one process to another, and as a result get only a split second of downtime. I'd like existing connections / sockets to remain open and finish processing in the old process, while the new process starts servicing new connectinos. Is there some proven method of doing this using BSD-sockets? (Bonus points for an EventMachine solution.) Are there perhaps open-source libraries out there implementing this, that I can use as is, or use as a reference? (Again, non-Ruby and non-EventMachine solutions are appreciated too!)

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• Getting my head around object oriented programing

  - by nLL

  I am entry level .Net developer and using it to develop web sites. I started with classic asp and last year jumped on the ship with a short C# book. As I developed I learned more and started to see that coming from classic asp I always used C# like scripting language. For example in my last project I needed to encode video on the webserver and wrote a code like public class Encoder { Public static bool Encode(string videopath) { ...snip... return true; } } While searching samples related to my project I’ve seen people doing this public class Encoder { Public static Encode(string videopath) { EncodedVideo encoded = new EncodedVideo(); ...snip... encoded.EncodedVideoPath = outputFile; encoded.Success = true; ...snip... } } public class EncodedVideo { public string EncodedVideoPath { get; set; } public bool Success { get; set; } } As I understand second example is more object oriented but I don’t see the point of using EncodedVideo object. Am I doing something wrong? Does it really necessary to use this sort of code in a web app?

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• uniimageview not updating after views tranistion

  - by Fabio Ricci

  Hi I have one main view where I display an image, in the method viewDidLoad: ballRect = CGRectMake(posBallX, 144, 32.0f, 32.0f); theBall = [[UIImageView alloc] initWithFrame:ballRect]; [theBall setImage:[UIImage imageNamed:@"ball.png"]]; [self.view addSubview:theBall]; [laPalla release]; Obviously, the value of posBallX is defined and then update via a custom method call many times in the same class. theBall.frame = CGRectMake(posBallX, 144, 32, 32); Everything works, but when I go to another view with [self presentModalViewController:viewTwo animated:YES]; and come back with [self presentModalViewController:viewOne animated:YES]; the image is displayed correctly after the method viewDidLoad is called (I retrieve the values with NSUserDefaults) but no more in the second method. In the NSLog I can even see the new posBallX updating correctly, but the Image is simply no more shown... The same happens with a Label as well, which should print the value of posBallX. So, things are just not working if I come back to the viewOne from the viewTwo... Any idea??????? Thanks so much!

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• Disable control in .aspx from Masterpage conditionally

  - by miccet

  Ok, this might be a bit weird, so I'll start with explaining what I'm trying to do. I have several masterpages for my site, and in they inherit each other. In the second of them (4 in total) I have a background image. Here comes the trick, I'd like to override this image from the final aspx page. I can't change the position of this image, it has to be in masterpage 2, since some pages uses that very page as masterpage. One idea I had was to create a ContentPlaceHolder next to the image and if there are any images in that (check in Page_Load) then the main image would be hidden. I did this with a recursive function, that finds the image by looping through the ContentPlaceHolder's controls. When I set the visibility property to false though, nothing happens. Any other ideas to how this could be done, or why the above doesn't work? Edit: It's not about changing items in the master pages, rather the other way around, that from the Masterpages codebehind dig down into the page that is displayed currently and see if it has controls in a specific ContentPlaceHolder.

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• WM_NOTIFY and superclass chaining issue in Win32

  - by DasMonkeyman

  For reference I'm using the window superclass method outlined in this article. The specific issue occurs if I want to handle WM_NOTIFY messages (i.e. for custom drawing) from the base control in the superclass I either need to reflect them back from the parent window or set my own window as the parent (passed inside CREATESTRUCT for WM_(NC)CREATE to the base class). This method works fine if I have a single superclass. If I superclass my superclass then I run into a problem. Now 3 WindowProcs are operating in the same HWND, and when I reflect WM_NOTIFY messages (or have them sent to myself from the parent trick above) they always go to the outermost (most derived) WindowProc. I have no way to tell if they're messages intended for the inner superclass (base messages are supposed to go to the first superclass) or messages intended for the outer superclass (messages from the inner superclass are intended for the outer superclass). These messages are indistinguishable because they all come from the same HWND with the same control ID. Is there any way to resolve this without creating a new window to encapsulate each level of inheritance? Sorry about the wall of text. It's a difficult concept to explain. Here's a diagram. single superclass: SuperA::WindowProc() - Base::WindowProc()---\ ^--------WM_NOTIFY(Base)--------/ superclass of a superclass: SuperB::WindowProc() - SuperA::WindowProc() - Base::WindowProc()---\ ^--------WM_NOTIFY(Base)--------+-----------------------/ ^--------WM_NOTIFY(A)-----------/ The WM_NOTIFY messages in the second case all come from the same HWND and control ID, so I cannot distinguish between the messages intended for SuperA (from Base) and messages intended for SuperB (from SuperA). Any ideas?

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• C# Accepting sockets in async fasion - best practices

  - by psulek

  What is the best way to accept new sockets in async way. First way: while (!abort && listener.Server.IsBound) { acceptedSocketEvent.Reset(); listener.BeginAcceptSocket(AcceptConnection, null); bool signaled = false; do { signaled = acceptedSocketEvent.WaitOne(1000, false); } while (!signaled && !abort && listener.Server.IsBound); } where AcceptConnection should be: private void AcceptConnection(IAsyncResult ar) { // Signal the main thread to continue. acceptedSocketEvent.Set(); Socket socket = listener.EndAcceptSocket(ar); // continue to receive data and so on... .... } or Second way: listener.BeginAcceptSocket(AcceptConnection, null); while (!abort && listener.Server.IsBound) { Thread.Sleep(500); } and AcceptConnection will be: private void AcceptConnection(IAsyncResult ar) { Socket socket = listener.EndAcceptSocket(ar); // begin accepting next socket listener.BeginAcceptSocket(AcceptConnection, null); // continue to receive data and so on... .... } What is your prefered way and why?

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• Using collections/containers/catalogs in Domain Models

  - by devoured elysium

  Let's say I want to model a cinema. The cinema will have a couple of rooms(for example, 7), where the movies are being played. I wonder how should I design the domain model for this scenario. Should the Cinema class concept concept have a direct association with the 7 rooms? Should the Cinema class concept have an association with a catalog of the 7 rooms? Why? I am having some trouble understanding why in some places I see the first case and in some others I see something like the second case. If instead of rooms, I wanted to depict the relationship between Cinema and: Tickets to sell (today). Tickets already sold (today) Customers in the Cinema database The set of hours at which there are movies playing in a given room in the cinema. The set of places you can sit at in a room in the cinema. Should I use catalogs, should I connect them directly to the Cinema concept with a multiplicity of * in the target? Thanks

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• Best practices, PHP, tracking millions of impressions per day.

  - by John

  What do I have to do to make 20k mysql inserts per second possible (during peak hours around 1k/sec during slower times)? I've been doing some research and I've seen the "INSERT DELAYED" suggestion, writing to a flat file, "fopen(file,'a')", and then running a chron job to dump the "needed" data into mysql, etc. I've also heard you need multiple servers and "load balancers" which I've never heard of, to make something like this work. I've also been looking at these "cloud server" thing-a-ma-jigs, and their automatic scalability, but not sure about what's actually scalable. The application is just a tracker script, so if I have 100 websites that get 3 million page loads a day, there will be around 300 million inserts a day. The data will be ran through a script that will run every 15-30 minutes which will normalize the data and insert it into another mysql table. How do the big dogs do it? How do the little dogs do it? I can't afford a huge server anymore so any intuitive ways, if there are multiple ways of going at it, you smart people can think of.. please let me know :)

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• Trying to work with a multi-value array in LotusScript and sort of stuck

  - by rrumaner

  I have to find a way to store a series of variables - MonthYear (the key) and a counter. The purpose of this is to track the number of documents processed by Month & Year. I was thinking of a list but I am not sure how to save the data so that it is readable and able to be shown in a table at a later date. I thought about using a multi-dimensional array - someArray(1,0 to 1) and ReDim'ing it each time I start a new MonthYear and then save it back to a field on the document but am not sure how that is going to play out. Does anyone have an idea of how I can accomplish this? The first dimension will be the MonthYear (key) and the second will be a counter that is updated every time a new document is processed. The key will be based on a field on the document being processed. How can I make sure I am updating the right key/counter combination? How can I retrieve the existing counter from the field on the document, update the counter and then replace the value? I thought about just adding a new element (ReDim) every time a document is processed and than somehow adding up all the counters for each key and storing that in an array, but that just seems real messy. There has to be a good way to do this. Any and all ideas will be greatly appreciated

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• Clearly defined Rails routing problem - undefined method for Nil:NilClass

  - by sscirrus

  Guys and girls, I have been working on this problem for a while but still no joy. This is my second question within this general area, because the last question was getting too long and this is now more well-defined. Summary of the Problem: I am loading a page for my customers and I get error: undefined method 'name' for Nil:NilClass My Code #Link on views/users/show.html.erb: <%= link_to "Customer Account", :action => "home", :controller => "customers", :id => @user.user_type_id %> #Regular Route: map.connect 'customers/home/:id', :controller => 'customers', :action => 'home' #Rake Routes, first entry: /customers/home/:id :controller=>:"customers", :action=>"home" #Customers Controller: def home render :layout => 'home' @customer = Customer.find(params[:id]) @user = @current_user_session.user flash[:error] = "Customer not found" and return unless @customer @jobs = @customer.jobs end #views/customers/home.html.erb: <%= @customer.name %> I have absolutely no idea why this seemingly clear sequence of events is resulting in a NilClass. Search the console for Customer.find(2) returns the correct customer. What is this noob missing? Thank you very much.

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• tabs using jquery

  - by sea_1987

  I currently have a tabbed system in place, however it not doing exactly as I need it too, I was hoping that by navigating to the URL with #tab2 suffixed on then end it would navigate to my tabbed page and the tab that is present in the URL would be the one that is active, however the first tab in the sequence is always active, is there a way to check what is being passed in the URL first and if there is #tabid present then make that tab the current tab? My javascript currently looks like this, $(".tab_content").hide(); //Hide all content $("ul.tabNavigation li.shortlist").addClass("active").show(); //Activate first tab (in this case second because of floats) $(".tab_content#shortlist").show(); //Show first tab content //On Click Event $("ul.tabNavigation li").click(function() { $("ul.tabNavigation li").removeClass("active"); //Remove any "active" class $(this).addClass("active"); //Add "active" class to selected tab $(".tab_content").hide(); //Hide all tab content var activeTab = $(this).find("a").attr("href"); //Find the href attribute value to identify the active tab + content $(activeTab).fadeIn(); //Fade in the active ID content return false; });

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• JFrame that has multiple layers

  - by phunehehe

  Hello, I have a window that has two layers: a static background and a foreground that contains moving objects. My idea is to draw the background just once (because it's not going to change), so I make the changing panel transparent and add it on top of the static background. Here is the code for this: public static void main(String[] args) { JPanel changingPanel = new JPanel() { @Override public void paintComponent(Graphics g) { super.paintComponent(g); g.setColor(Color.RED); g.fillRect(100, 100, 100, 100); } }; changingPanel.setOpaque(false); JPanel staticPanel = new JPanel(); staticPanel.setBackground(Color.BLUE); staticPanel.setLayout(new BorderLayout()); staticPanel.add(changingPanel); JFrame frame = new JFrame(); frame.add(staticPanel); frame.setSize(800, 600); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } This piece of code gives me the correct image I want, but every time I repaint changingPanel, staticPanel gets repainted as well (which is obviously against the whole idea of painting the static panel just once). Can somebody show me what's wrong? FYI I am using the javax.swing.Timer to recalculate and repaint the changing panel 24 times every second.

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• mercurial hg - pushing to a cloned repositor via APACHE errors with "repository is unrelated"

  - by Ash

  Two scenarios, one work one doesn't when they both should: Scenario #1: (DOES NOT work via apache) 2 repos on Server SERVER: Repo "A", Repo "B" cloned from repo A via http://SERVER/HG/A On client: Repo A cloned from http://SERVER/HG/A Repo B cloned from http://SERVER/HG/B Added a file to repo A from client and commited & pushed it up to http://SERVER/HG/A ...WORKS Added a file to repo B from client and commited & pushed it up to http://SERVER/HG/B ...ERROR with abort: repository is unrelated, it only works if I -f (force) the push Scenario #2: (works via file system) On Server SERVER: Repo "A", Repo "B" cloned from E:/HG/A On client: Repo A cloned from E:/HG/A Repo B cloned from E:/HG/B Added a file to repo A from client and commited & pushed it up to E:/HG/A ...WORKS Added a file to repo B from client and commited & pushed it up to E:/HG/B ...WORKS Conclusion:...Something in the apache configuration or in the integration between apache & mercurial is making the repo "unrelated".... Any ideas??? Why do I need to force in the first scenario but do not have to in the second?? ...and i tried both scenarios via tortoisehg as well as command line.

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