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  • Django Many-to-Many Question

    - by DZ
    My questions seems like a common problem that when I have seen any questions on it is never really asked right or not answered. So Im going to try to get the question right, and maybe someone knows how to resolve the issue, or correct my understanding. The problem: When you have a many-to-many relation ship (related_name not through) and you are trying to use the admin interface you are required to input one of the rleationships even though it does not have to exsist for you to create the first entry. Meaning you have to assign a group to an event to create the group. Wow that sounds complicated. So I can see why the question is not getting answered. Lets try the non code explanation example... First and important versions: Django 1.1.1 Phython 2.6 So I have a model where I created a many-to-many realtionship and Im using the related_name Im creating an app that is an event organizer, for simplicty lets say events although they could be anytype). For this first post Im going to stay away from the code and just try to explain. A few keys: (explaining comment) ** - many-to-many So in the model we have 1) The Main Event (this is main model) 2) Groups (link to events and their can be many events for a group) a) Events** I have simplified this example a little becuase I recognize that what does it matter. Just create the event first... But there are specific varations where that will not work. What the many-to-many related_name does it created another table with the indecies of the two other tables. Nothing says that this extra table HAS to be populated. Becuase if I look in the database and work within myPHPadmin I can create a group with out registering an event, since the connection between the two is a seperate table the DB does not care. How do I make the admin interface this realize it? Ok I know thats a lot so I hope I have explained it clearly. Thank you anyone for your comments/thoughts/advice

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  • remove/restore elements, maintaining their events and element's children

    - by Emin
    I came to a situation where I need to edit the following in a way that, on some event (lets assume the 'click' event in this case) I need to remove (or unwrap?) the .container and the .header and have the .itemlist still visible/available on the page. And then, I need to restore .container and .header back again on some other event, while still maintain the event listeners on the a tags, and if possible, without removing the said items from the DOM. Is this possible? <ul class="container"> <li class="header"><a href="#">delete</a> | <a href="#">edit</a></li> <ul class="itemlist"> <li>some item</li> <li>some other item</li> </ul> </ul>

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  • WPF & Linq To SQL binding ComboBox to foreign key

    - by ZeroDelta
    I'm having trouble binding a ComboBox to a foreign key in WPF using Linq To SQL. It works fine when displaying records, but if I change the selection on the ComboBox, that change does not seem to affect the property to which it is bound. My SQL Server Compact file has three tables: Players (PK is PlayerID), Events (PK is EventID), and Matches (PK is MatchID). Matches has FKs for the the other two, so that a match is associated with a player and an event. My window for editing a match uses a ComboBox to select the Event, and the ItemsSource is set to the result of a LINQ query to pull all of the Events. And of course the user should be able to select the Event based on EventName, not EventID. Here's the XAML: <ComboBox x:Name="cboEvent" DisplayMemberPath="EventName" SelectedValuePath="EventID" SelectedValue="{Binding Path=EventID, UpdateSourceTrigger=PropertyChanged}" /> And some code-behind from the Loaded event handler: var evt = from ev in db.Events orderby ev.EventName select ev; cboEvent.ItemsSource = evt.ToList(); var mtch = from m in db.Matches where m.PlayerID == ((Player)playerView.CurrentItem).PlayerID select m; matchView = (CollectionView)CollectionViewSource.GetDefaultView(mtch); this.DataContext = matchView; When displaying matches, this works fine--I can navigate from one match to the next and the EventName is shown correctly. However, if I select a new Event via this ComboBox, the CurrentItem of the CollectionView doesn't seem to change. I feel like I'm missing something stupid! Note: the Player is selected via a ListBox, and that selection filters the matches displayed--this seems to be working fine, so I didn't include that code. That is the reason for the "PlayerID" reference in the LINQ query

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  • How can I filter images and use filesystemview icons in my jtree?

    - by HoLeX
    First of all sorry about my english. So, i have some problems with my JTree because i want to filter specific types of images and also i want to use icons of FileSystemView class. Can you help me? I will appreciate so much. Here is my code: import java.awt.BorderLayout; import java.io.File; import java.util.Iterator; import java.util.Vector; import javax.swing.JPanel; import javax.swing.JTree; import javax.swing.event.TreeModelEvent; import javax.swing.event.TreeModelListener; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener; import javax.swing.tree.TreeModel; import javax.swing.tree.TreePath; public class ArbolDirectorio extends JPanel { private JTree fileTree; private FileSystemModel fileSystemModel; public ArbolDirectorio(String directory) { this.setLayout(new BorderLayout()); this.fileSystemModel = new FileSystemModel(new File(directory)); this.fileTree = new JTree(fileSystemModel); this.fileTree.setEditable(true); this.fileTree.addTreeSelectionListener(new TreeSelectionListener() { @Override public void valueChanged(TreeSelectionEvent event) { File file = (File) fileTree.getLastSelectedPathComponent(); System.out.println(getFileDetails(file)); } }); this.add(fileTree, BorderLayout.CENTER); } private String getFileDetails(File file) { if (file == null) { return ""; } StringBuffer buffer = new StringBuffer(); buffer.append("Name: " + file.getName() + "\n"); buffer.append("Path: " + file.getPath() + "\n"); return buffer.toString(); } } class FileSystemModel implements TreeModel { private File root; private Vector listeners = new Vector(); public FileSystemModel(File rootDirectory) { root = rootDirectory; } @Override public Object getRoot() { return root; } @Override public Object getChild(Object parent, int index) { File directory = (File) parent; String[] children = directory.list(); return new TreeFile(directory, children[index]); } @Override public int getChildCount(Object parent) { File file = (File) parent; if (file.isDirectory()) { String[] fileList = file.list(); if (fileList != null) { return file.list().length; } } return 0; } @Override public boolean isLeaf(Object node) { File file = (File) node; return file.isFile(); } @Override public int getIndexOfChild(Object parent, Object child) { File directory = (File) parent; File file = (File) child; String[] children = directory.list(); for (int i = 0; i < children.length; i++) { if (file.getName().equals(children[i])) { return i; } } return -1; } @Override public void valueForPathChanged(TreePath path, Object value) { File oldFile = (File) path.getLastPathComponent(); String fileParentPath = oldFile.getParent(); String newFileName = (String) value; File targetFile = new File(fileParentPath, newFileName); oldFile.renameTo(targetFile); File parent = new File(fileParentPath); int[] changedChildrenIndices = { getIndexOfChild(parent, targetFile) }; Object[] changedChildren = { targetFile }; fireTreeNodesChanged(path.getParentPath(), changedChildrenIndices, changedChildren); } private void fireTreeNodesChanged(TreePath parentPath, int[] indices, Object[] children) { TreeModelEvent event = new TreeModelEvent(this, parentPath, indices, children); Iterator iterator = listeners.iterator(); TreeModelListener listener = null; while (iterator.hasNext()) { listener = (TreeModelListener) iterator.next(); listener.treeNodesChanged(event); } } @Override public void addTreeModelListener(TreeModelListener listener) { listeners.add(listener); } @Override public void removeTreeModelListener(TreeModelListener listener) { listeners.remove(listener); } private class TreeFile extends File { public TreeFile(File parent, String child) { super(parent, child); } @Override public String toString() { return getName(); } } }

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  • JSON onFailure issue

    - by Mikey1980
    I’m having trouble getting a AJAX/JSON function to work correctly. I had this function grabbing value from a drop down box but now I want to use an anchor tag to set it's value. I thought it would be easy to just use the onClick event to pass string to the function I was using for the drop down box but I get the alert in JSON onFailure event even though data gets added to MySQL. I tried removing the alert from onFailure event but then it doesn't add the data. The drop down still continues work work fine, no alerts. (I should note that removing the alert also broke my drop down box) 1st I add an onClick event… <a href="<?php echo Settings::get('app.webroot'); ?>?view=schedule&action=questions" onmouseout="MM_swapImgRestore();" onmouseover="MM_swapImage('bre','','template/images/schedule/bre_f2.gif',1)" onclick="assignCallType('testing')";> 2nd I check main.js.php function assignCallType(type) { alert(type); new Request.JSON({ url: "ajax.php", onSuccess: function(rtndata,txt){ if (rtndata['STATUS'] != 'OK') alert('Status was not okay'); }, onFailure : function () { alert("onFailure") } }).get({ 'action': 'assignCallType', 'call_type': type }); } 3rd Ajax.php: the variable is back in PHP and values get added to MySQL but I get the Alert in the JSON onFailure event if ($_GET['action'] == "assignCallType") { if ($USER->isInsideSales()) { $call_type = $_GET['call_type']; $_SESSION['callinfo']->setCallType($call_type); $_SESSION['callinfo']->save($callid); echo json_encode(array('STATUS'=>'OK')); } else { echo json_encode(array('STATUS'=>'DENIED')); } } Any idea where I am going wrong. The only difference between this and the working drop down is how the function was called, I used onchange="assignCallType(this.value)".

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  • C# rendering graph

    - by subodh
    i have to render a graph in my web page.i have desigened a class( in C#) file which contain a event for rendering a graph(pie chart).In that event i pass some value i.e legends which is a string[] and value which is double[] to draw the graph. But i want that instead of inserting the value directly into the event, pass that value with some function like public void insertvalue(string[] legends,double[] values) { } how could i do that plese help me???????? And i am using Zedgraphweb control to render the graph.

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  • How do I create a multiple-table check constraint?

    - by Zack Peterson
    Please imagine this small database... Diagram Tables Volunteer Event Shift EventVolunteer ========= ===== ===== ============== Id Id Id EventId Name Name EventId VolunteerId Email Location VolunteerId Phone Day Description Comment Description Start End Associations Volunteers may sign up for multiple events. Events may be staffed by multiple volunteers. An event may have multiple shifts. A shift belongs to only a single event. A shift may be staffed by only a single volunteer. A volunteer may staff multiple shifts. Check Constraints Can I create a check constraint to enforce that no shift is staffed by a volunteer that's not signed up for that shift's event? Can I create a check constraint to enforce that two overlapping shifts are never staffed by the same volunteer?

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  • Allow only numeric values in textbox not working in Firefox

    - by AsM
    I have one Textbox accepting Bank A/c Number value which should be numerical only. I have written one javascript function for this as follows. function fncInputNumericValuesOnly() { if(!(event.keyCode=48||event.keyCode<=57)) { event.returnValue=false; } } This code is not allowing non-numerical values in IE. but same is not working in Firefox. I also tried to use onkeyup event. & also tried on pageload txtAccountNumber.Attributes.Add("onkeyup","fncInputNumericValuesOnly()") Why this is not working with firefox 3.

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  • Flex 3 (Action Script): How to access a function from a loaded swf-file ?

    - by Trantec
    Hi, i load in ActionScript a swf file. So far no Problem, but I didn't found a way to access one of it's functions, the best thing would be if I could access the main function in the mxml part of the swf. Here is the code of the main-mxml file that belongs to the swf that should load and access another swf: <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="basket();"> <mx:Script> <![CDATA[ import mx.controls.SWFLoader; private function basket(): void { var swfLoader: SWFLoader = new SWFLoader(); swfLoader.addEventListener( Event.COMPLETE, handleSWFLoaded ); try { swfLoader.load( "../../data/InternalSWF.swf" ); } catch (error: Error) { trace( "Couldn't load file !" ); } } private function handleSWFLoaded( event: Event ): void { var swfApp:* = event.target.content; // This both ways don't work... //if (swfApp.hasOwnProperty("initApp")) { // var initApp:Function = (swfApp["initApp"] as Function); // initApp(); //} // swfApp.initApp(); } ]]> </mx:Script> <mx:Text id="output" width="100%" textAlign="center" /> </mx:Application> The if-Statement "if (swfApp.hasOwnProperty("initApp")) {" is never true and the call "swfApp.initApp()" says that this function does not exist. In the original version I added event listeners for HTTPStatusEvent.HTTP_STATUS, IOErrorEvent.IO_ERROR and SecurityErrorEvent.SECURITY_ERROR. But except for HTTP_STATUS = 0 none of them are called. Is the whole idea of how i try to do this wrong ?

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  • Events convention - I don't get it

    - by bobjink
    My class with an event: public class WindowModel { public delegate void WindowChangedHandler(object source, WindowTypeEventArgs e); public event WindowChangedHandler WindowChanged; public void GotoWindow(WindowType windowType) { this.currentWindow = windowType; this.WindowChanged.Invoke(this, new WindowTypeEventArgs(windowType)); } } Derived event class: public class WindowTypeEventArgs : EventArgs { public readonly WindowType windowType; public WindowTypeEventArgs(WindowType windowType) { this.windowType = windowType; } } Some other class that register it to the event: private void SetupEvents() { this.WindowModel.WindowChanged += this.ChangeWindow; } private void ChangeWindow(object sender, WindowTypeEventArgs e) { //change window } What have I gained from following the .Net convention? It would make more sense to have a contract like this public delegate void WindowChangedHandler(WindowType windowType); public event WindowChangedHandler WindowChanged; Doing it this way, I don't need to create a new class and is easier to understand. I am not coding a .Net library. This code is only going to be used in this project. I like conventions but am I right when I say that in this example it does not make sense or have i missunderstood something?

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  • How do we name test methods where we are checking for more than one condition?

    - by Sandbox
    I follow the technique specified in Roy Osherove's The Art Of Unit Testing book while naming test methods - MethodName_Scenario_Expectation. It suits perfectly well for my 'unit' tests. But,for tests that I write in 'controller' or 'coordinator' class, there isn't necessarily a method which I want to test. For these tests, I generate multiple conditions which make up one scenario and then I verify the expectation. For example, I may set some properties on different instances, generate an event and then verify that my expectation from controller/coordinator is being met. Now, my controller handles events using a private event handler. Here my scenario is that, I set some properties, say 3 condition1,condition2 and condition3 Also, my scenario includes an event is raised I don't have a method name as my event handler is private. How do I name such a test method?

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  • How do you modify the data returned from an AJAX call before it is rendered in the jqGrid?

    - by GiddyUpHorsey
    I'm trying to modify the data returned from an AJAX call before jqGrid 3.7.2 renders it. I've tried hooking into the loadComplete event but when I modify the data it appears to be after it has already rendered. I've also tried hooking into the success event on the ajaxGridOptions field of options but that seems to totally override the event and jqGrid doesn't render the data. How can I modify the data returned from a web service call before jqGrid renders it?

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  • Detecting html textarea's change

    - by Colby77
    Hi, I'd like to monitor my textarea's changes with jQuery. I can do this with the keyup event and it works perfectly. But what event I can get when a user click on the textarea (right mouse click), then choose paste? Click event occur only when the user click with the left mouse button on the textarea. How can I handle this situation?

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  • Alert is showing two times. how to restrict?

    - by Dev
    function test(myObject, flag) { if ( (flag) || ((event.keyCode == 59) || (event.which == 59)) || ((event.keyCode == 44) || (event.which == 44))) {alert(myObject.value);} } function closeWin() {self.close();} --foaram name='test' --textaarea name='textareaName' cols='44' rows='3' onChange='test(this, true);' --onKeyPress='test(this);' onBlur='test(this, true);' ---inpaut type='text' name='textName' --inpaut type='button' name='buttonName' onclick='closeWin();' value='Cancel' --/foarm I have a problem: when input value(e.g: test;) into textareaName field, the test function is always run more one time. Please show me the way can run this only one time.

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  • Windows App. Thread Aborting Issue

    - by Patrick
    I'm working on an application that has to make specific decisions based on files that are placed into a folder being watched by a file watcher. Part of this decision making process involves renaming files before moving them off to another folder to be processed. Since I'm working with files of all different sizes I created an object that checks the file in a seperate thread to verify that it is "available" and when it is it fires an event. When I run the rename code from inside this available event it works. public void RenameFile_Test() { string psFilePath = @"C:\File1.xlsx"; tgt_File target = new FileObject(psFilePath); target.FileAvailable += new FileEventHandler(OnFileAvailable); target.FileUnAvailable += new FileEventHandler(OnFileUnavailable); } private void OnFileAvailable(object source, FileEventArgs e) { ((FileObject)source).RenameFile(@"C:\File2.xlsx"); } The problem I'm running into is that when the extensions are different from the source file and the rename to file I am making a call to a conversion factory that returns a factory object based on the type of conversion and then converts the file accordingly before doing the rename. When I run that particular piece of code in unit test it works, the factory object is returned, and the conversion happens correctly. But when I run it within the process I get up to the... moExcelApp = new Application(); part of converting an .xls or .xlsx to a .csv and i get a "Thread was being Aborted" error. Any thoughts? Update: There is a bit more information and a bit of map of how the application works currently. Client Application running FSW On File Created event Creates a FileObject passing in the path of the file. On construction the file is validated: if file exists is true then, Thread toAvailableCheck = new Thread(new ThreadStart(AvailableCheck)); toAvailableCheck.Start(); The AvailableCheck Method repeatedly tries to open a streamreader to the file until the reader is either created or the number of attempts times out. If the reader is opened, it fires the FileAvailable event, if not it fires the FileUnAvailable event, passing back itself in the event. The client application is wired to catch those events from inside the Oncreated event of the FSW. the OnFileAvailable method then calls the rename functionality which contains the excel interop call. If the file is being renamed (not converted, extensions stay the same) it does a move to change the name from the old file name to the new, and if its a conversion it runs a conversion factory object which returns the correct type of conversion based on the extensions of the source file and the destination file name. If it is a simple rename it works w/o a problem. If its a conversion (which is the XLS to CSV object that is returned as a part of the factory) the very first thing it does is create a new application object. That is where the application bombs. When i test the factory and conversion/rename process outside of the thread and in its own unit test the process works w/o a problem. Update: I tested the Excel Interop inside a thread by doing this: [TestMethod()] public void ExcelInteropTest() { Thread toExcelInteropThreadTest = new Thread(new ThreadStart(Instantiate_App)); toExcelInteropThreadTest.Start(); } private void Instantiate_App() { Application moExcelApp = new Application(); moExcelApp.Quit(); } And on the line where the application is instatntiated I got the 'A first chance exception of type 'System.Threading.ThreadAbortException' error. So I added; toExcelInteropThreadTest.SetApartmentState(ApartmentState.MTA); after the thread instantiation and before the thread start call and still got the same error. I'm getting the notion that I'm going to have to reconsider the design.

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  • Windows Service Fails on Launch

    - by Jeff
    I'm trying to write a windows service. It installs fine, but fails when I run it with the following exception. I've searched for the string "MyNewProgramService", but I can't find any conversions that would throw this error. I've also added try/catch blocks to a bunch of code with custom exception handling without finding where this exception is occuring. I'm thinking it's somewhere in the auto-generated configuartion/setup code. Any ideas? Event Type: Error Event Source: MyNewProgram Event Category: None Event ID: 0 Date: 4/15/2010 Time: 12:48:34 PM User: N/A Computer: 20F7KF1 Description: Service cannot be started. System.InvalidCastException: Conversion from string "MyNewProgramService" to type 'Integer' is not valid. ---> System.FormatException: Input string was not in a correct format. at Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat) at Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) --- End of inner exception stack trace --- at Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) at TaskManagerFailureHandlerService.MyNewProgramService.OnStart(String[] args) at System.ServiceProcess.ServiceBase.ServiceQueuedMainCallback(Object state)

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  • Javascript: Display message when user leaves site

    - by Brian Rasmusson
    Hi, I'm looking for a way to display a message to the user if he leaves my site after only viewing one page. I found this (http://www.pgrs.net/2008/1/30/popup-when-leaving-website) clever solution, but it has a few flaws: staying_in_site = false; Event.observe(document.body, 'click', function(event) { if (Event.element(event).tagName == 'A') { staying_in_site = true; } }); window.onunload = popup; function popup() { if(staying_in_site) { return; } alert('I see you are leaving the site'); } It displays the message also when refreshing the page or using the back button. Do you know a better solution or how to fix it in the above code? I'm no javascript master :) My intention is to add the code on very specific landing pages only, and display the message when people leave the page without downloading my trial software or reading other pages on my site.

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  • ASP.Net - Help with datagrid/checkboxes/double submit

    - by Gareth D
    We have a simple datagrid. Each row has a checkbox. The checkbox is set to autopostback, and the code-behind has an event handler for the checkbox check-changed event. This all works as expected, nothing complicated. However, we want to disable the checkboxes as soon as one is checked to prevent a double submit i.e. check box checked, all checkboxes are disabled via client side javascript, form submitted. To achieve this I we are injecting some code into the onclick event as follows (note that the alert is just for testing!): Protected Sub DgAccounts_ItemCreated(ByVal sender As System.Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles DgAccounts.ItemCreated If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then Dim chk As CheckBox = CType(e.Item.FindControl("chkItemChecked"), CheckBox) chk.Attributes.Add("onclick", "alert('fired ...');DisableAllDataGridCheckBoxes();") End If End Sub When inspecting the source of the rendered page we get the following: <input id="DgAccounts__ctl2_chkItemChecked" type="checkbox" name="DgAccounts:_ctl2:chkItemChecked" onclick="alert('fired ...');DisableAllDataGridCheckBoxes();setTimeout('__doPostBack(\'DgAccounts$_ctl2$chkItemChecked\',\'\')', 0)" language="javascript" /> It all appears in order, however the server side event does not fire – I believe this is due to the checkbox being disabled, as if we just leave the alert in and remove the call to disable the checkbox it all works fine. Can I force the check-changed event to fire even though the check box is disabled?

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  • Why Is the sender type null when dealing with events

    - by ChloeRadshaw
    From C# Via CLR: Note A lot of people wonder why the event pattern requires the sender parameter to always be of type Object After all, since the MailManager will be the only type raising an event with a NewMail EventArgs object, it makes more sense for the callback method to be prototyped like this: void MethodName(Mai l Manager sender, NewMail EventArgs e); The pattern requires the sender parameter to be of type Object mostly because of inheritance What if Mai lManager were used as a base class for SmtpMailManager? In this case, the callback method should have the sender parameter prototyped as SmtpMailManager instead of Mail Manager, but this can’t happen because SmtpMai lManager just inherited the NewMai l event So the code that was expecting SmtpMail Manager to raise the event must still have to cast the sender argument to SmtpMailManager In other words, the cast is still required, so the sender parameter might as well be typed as Obj ect The next reason for typing the sender parameter as Obj ect is just fexibility It allows the delegate to be used by multiple types that offer an event that passes a NewMail EventArgs object For example, a PopMai lManager class could use the delegate even if this class were not derived from Mail Manager I just simply cannot understand why the sender is an object - Why can it not be generified? so most of the time we do not need to do generic casts

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  • Tracing all events in VB.NET

    - by MatsT
    I keep running into situations where I don't know what event I have to listen to in order to execute my code at the correct time. Is there any way to get a log of all events that is raised? Any way to filter that log based on what object raised the event? EDIT: Final solution: Private Sub WireAllEvents(ByVal obj As Object) Dim parameterTypes() As Type = {GetType(System.Object), GetType(System.EventArgs)} Dim Events = obj.GetType().GetEvents() For Each ev In Events Dim handler As New DynamicMethod("", Nothing, parameterTypes, GetType(main)) Dim ilgen As ILGenerator = handler.GetILGenerator() ilgen.EmitWriteLine("Event Name: " + ev.Name) ilgen.Emit(OpCodes.Ret) ev.AddEventHandler(obj, handler.CreateDelegate(ev.EventHandlerType)) Next End Sub And yes, I know this is not a good solution when you actually want to do real stuff that triggers off the events. There are good reasons for the 1 method - 1 event approach, but this is still useful when trying to figure out which of the methods you want to add your handlers to.

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  • <h:selectOneMenu> ValueChangeListener Problem

    - by Ehsun
    I have two <h:selectOneMenu> tags on my form like this: <h:outputText value="#{lbls.incomeType}:"/> <h:selectOneMenu id="incomeType" label="#{lbls.incomeType}" onchange="submit();" valueChangeListener="#{price.earnTypeValueChanged}" immediate="true"> <f:selectItems value="#{price.earnTypes}"/> <f:converter converterId="ir.khorasancustoms.EarnTypeConverter"/> </h:selectOneMenu> <h:message for="incomeType" infoClass="info" errorClass="error" warnClass="warning" fatalClass="fatal"/> <h:outputText value="#{lbls.earnAttribute}:"/> <h:selectOneMenu id="earnAttribute" label="#{lbls.earnAttribute}" value="#{price.price.earnAttribute}"> <f:selectItems value="#{price.earnAttributes}"/> <f:converter converterId="ir.khorasancustoms.EarnAttributeConverter"/> </h:selectOneMenu> <h:message for="incomeType" infoClass="info" errorClass="error" warnClass="warning" fatalClass="fatal"/> <h:messages globalOnly="true" layout="table" infoClass="info" warnClass="warning" errorClass="error" fatalClass="fatal"/> <h:button value="#{lbls.cancel}" outcome="index"/> <h:commandButton value="#{lbls.ok}" action="#{price.save}"/> the handler in the bean looks like this: public void earnTypeValueChanged(ValueChangeEvent event) { EarnType newEarnType = (EarnType) event.getNewValue(); earnAttributes = newEarnType.getAttributes(); FacesContext.getCurrentInstance().renderResponse(); } Everything works fine, except the user needs to press the OK button twice because the first one fires the earnTypeValueChanged. How is that caused and how can I fix it? Update 1: public void earnTypeValueChanged(ValueChangeEvent event) { EarnType oldEarnType = (EarnType) event.getOldValue(); EarnType newEarnType = (EarnType) event.getNewValue(); earnAttributes = newEarnType.getAttributes(); if (!newEarnType.equals(oldEarnType)) { FacesContext.getCurrentInstance().renderResponse(); } }

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