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  • Detect backspace in UITextField

    - by marcc
    Is there any way to detect when the backspace/delete key is pressed in the iPhone keyboard on a UITextField that is empty? I want to know when backspace is pressed only if the UITextField is empty. Based on the suggestion from @Alex Reynolds in a comment, I've added the following code while creating my text field: [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleTextFieldChanged:) name:UITextFieldTextDidChangeNotification object:searchTextField]; This notification is received (handleTextFieldChanged function is called), but still not when I press the backspace key in an empty field. Any ideas? There seems to be some confusion around this question. I want to receive a notification when the backspace key is pressed. That's it. But the solution must also work when the UITextField is already empty.

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  • Crash when trying to get NSManagedObject from NSFetchedResultsController after 25 objects?

    - by Jeremy
    Hey everyone, I'm relatively new to Core Data on iOS, but I think I've been getting better with it. I've been experiencing a bizarre crash, however, in one of my applications and have not been able to figure it out. I have approximately 40 objects in Core Data, presented in a UITableView. When tapping on a cell, a UIActionSheet appears, presenting the user with a UIActionSheet with options related to the cell that was selected. So that I can reference the selected object, I declare an NSIndexPath in my header called "lastSelection" and do the following when the UIActionSheet is presented: // Each cell has a tag based on its row number (i.e. first row has tag 0) lastSelection = [NSIndexPath indexPathForRow:[sender tag] inSection:0]; NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:lastSelection]; BOOL onDuty = [[managedObject valueForKey:@"onDuty"] boolValue]; UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Status" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil]; if(onDuty) { [actionSheet addButtonWithTitle:@"Off Duty"]; } else { [actionSheet addButtonWithTitle:@"On Duty"]; } actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque; // Override the typical UIActionSheet behavior by presenting it overlapping the sender's frame. This makes it more clear which cell is selected. CGRect senderFrame = [sender frame]; CGPoint point = CGPointMake(senderFrame.origin.x + (senderFrame.size.width / 2), senderFrame.origin.y + (senderFrame.size.height / 2)); CGRect popoverRect = CGRectMake(point.x, point.y, 1, 1); [actionSheet showFromRect:popoverRect inView:[sender superview] animated:NO]; [actionSheet release]; When the UIActionSheet is dismissed with a button, the following code is called: - (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex { // Set status based on UIActionSheet button pressed if(buttonIndex == -1) { return; } NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:lastSelection]; if([actionSheet.title isEqualToString:@"Status"]) { if([[actionSheet buttonTitleAtIndex:buttonIndex] isEqualToString:@"On Duty"]) { [managedObject setValue:[NSNumber numberWithBool:YES] forKey:@"onDuty"]; [managedObject setValue:@"onDuty" forKey:@"status"]; } else { [managedObject setValue:[NSNumber numberWithBool:NO] forKey:@"onDuty"]; [managedObject setValue:@"offDuty" forKey:@"status"]; } } NSError *error; [self.managedObjectContext save:&error]; [tableView reloadData]; } This might not be the most efficient code (sorry, I'm new!), but it does work. That is, for the first 25 items in the list. Selecting the 26th item or beyond, the UIActionSheet will appear, but if it is dismissed with a button, I get a variety of errors, including any one of the following: [__NSCFArray section]: unrecognized selector sent to instance 0x4c6bf90 Program received signal: “EXC_BAD_ACCESS” [_NSObjectID_48_0 section]: unrecognized selector sent to instance 0x4c54710 [__NSArrayM section]: unrecognized selector sent to instance 0x4c619a0 [NSComparisonPredicate section]: unrecognized selector sent to instance 0x6088790 [NSKeyPathExpression section]: unrecognized selector sent to instance 0x4c18950 If I comment out NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:lastSelection]; it doesn't crash anymore, so I believe it has something do do with that. Can anyone offer any insight? Please let me know if I need to include any other information. Thanks! EDIT: Interestingly, my fetchedResultsController code returns a different object every time. Is this expected, or could this be a cause of my issue? The code looks like this: - (NSFetchedResultsController *)fetchedResultsController { /* Set up the fetched results controller. */ // Create the fetch request for the entity. NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; // Edit the entity name as appropriate. NSEntityDescription *entity = [NSEntityDescription entityForName:@"Employee" inManagedObjectContext:self.managedObjectContext]; [fetchRequest setEntity:entity]; // Set the batch size to a suitable number. [fetchRequest setFetchBatchSize:80]; // Edit the sort key as appropriate. NSString *sortKey; BOOL ascending; if(sortControl.selectedSegmentIndex == 0) { sortKey = @"startTime"; ascending = YES; } else if(sortControl.selectedSegmentIndex == 1) { sortKey = @"name"; ascending = YES; } else { sortKey = @"onDuty"; ascending = NO; } NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:sortKey ascending:ascending]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; // Edit the section name key path and cache name if appropriate. NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:@"Root"]; aFetchedResultsController.delegate = self; self.fetchedResultsController = aFetchedResultsController; [aFetchedResultsController release]; [fetchRequest release]; [sortDescriptor release]; [sortDescriptors release]; NSError *error = nil; if (![fetchedResultsController_ performFetch:&error]) { /* Replace this implementation with code to handle the error appropriately. abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button. */ //NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } return fetchedResultsController_; } This happens when I set a breakpoint: (gdb) po [self fetchedResultsController] <NSFetchedResultsController: 0x61567c0> (gdb) po [self fetchedResultsController] <NSFetchedResultsController: 0x4c83630>

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  • C# best means to store data locally when offline

    - by mickartz
    I am in the midst of writing a small program (more to experiment with vs 2010 than anything else) Despite being an experiment it has some practical use for our local athletics club. My thought was to access the DB (currently online) to download the current members and store locally on a laptop (this is a MS sql table, used to power the club's website). take the laptop to the event (yes there ARE places that don't have internet coverage), add members to that days race (also a row from a sql table (though no changes would be made to this), record results (new records in 3rd table) Once home, showered and within internet access again, upload/edit the tables as per the race results/member changes etc. So I was thinking i'd do something like write xml files locally with the data, including a field to indicate changes etc? If anyone can point me in a direction i would appreciate it...hell if anyone could tell me if this has a name!!..I'd appreciate it TIA Michael Artz

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  • Is it possible to get the client process ID of an application that runs on SQL server?

    - by Andrea.Ko
    Hi all, For my VFP application, i have a program to check currently who is accessing the server (by using sp_who2), also another progam to check who is currently locking which table. But i wish to know which options my users is accessing at the moment. Am thinking if i can write a SP to get the current connected process ID for a specific client, and insert to a table(ActLog) in SQL with the program name pass into this table during users load the program. And delete that particular record when user unload the program. Then from the ActLog, i can know who is currently accessing to which program. At the moment, i wish to know if i able to get the client process ID? rgds/Andrea

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  • Most commonly occurring string in mysql column.

    - by MILESMIBALERR
    I am making a website where users can vote on which category a page is. They can vote that the page is category, for example: a, b, c, or d. Please don't ask what I am using this for, it is not important, I just want to know how to do it. I need to find the most commonly occurring category in the mysql row out of all the votes. Each time a user submits their vote, it submits the "category" that they voted for, and the "page_id". I have this so far: select page_id, category from categories group by page_id You cannot simply use a "COUNT(*) where category = 'a'" then repeat it for each category because there is many more categories in the actual project.

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  • Making a DataSet from another DataSet

    - by M.H
    Hi folks I have a client-server project (small project for companies in C#) and the server has a DataSet with some tables (there is no Database for some reasons so we save the DataSet as an XML file). when the clients connect to the server, the server should send some informations to the client depends on his privileges and some clients must add to or Delete from the DataSet in the server. I am thinking in Making a new small DataSet and sending it to the client (as xml) but I don't know how to generate a new DataSet with specific tables and rows (I tried to use Linq to DataSet but nothing worked). My Questions is how can I do that and is this a good solution to send informations to clients ? can you suggest a better scenario to send data to clients(I mean instead of making a new DataSet).

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  • safely lock a file then move? windows

    - by acidzombie24
    I have a file and need to ensure it exist before inserting a row into the db. After i insert i need to use the PK as part of the filename and move it into another location. How do i check if it exist then lock it so it cant be deleted until i can insert into the db then proceed to move the file without it being deleted upon releasing the lock? also the file may be in use. I am thinking of copying the file into a safe location then moving that file away. In this case i need to copy a file that is being used for reading. How can i do the above steps safely? Using .NET

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  • Preserving DataRowState when serializing DataSet using DataContractSerializer

    - by user349453
    For various reasons I am having to send a typed dataset to a WCF service endpoint. This works fine except that upon Deserializing, the RowState of each row in each DataTable is set to 'Added', regardless of what they were on the client. If I write the serialized stream out to a file, I see that the RowState is not part of the Serialized data. How can I add this so that I can preserve the RowState across service boundaries? Not that I think it matters, but the client process is running .net 3.5 while the service process is running .net 4.0

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  • WPF - Binding problem

    - by Erez
    Why after clicking the button the text in the textblock doesn't change ? XAML: <Grid> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Text="{Binding Name}"/> <Button Click="Button_Click" Grid.Row="1" Margin="20">Click Me</Button> </Grid> Code behind: public partial class Window1 : Window, INotifyPropertyChanged { private Person _myPerson; public Person MyPerson { get { return _myPerson; } set { _myPerson = value; if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs("MyPerson")); } } } public Window1() { MyPerson = new Person { Name = "A" }; DataContext = MyPerson; InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { MyPerson = new Person { Name = "B" }; } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; #endregion }

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  • Rails User-Profile model challenges

    - by Craig
    I am attempting to create an enrollment process similar to SO's: route to an OpenID provider provider returns the user's information to the UsersController (a guess) UsersController creates user, then routes to the ProfilesController's new or edit action. For now, I'm simply trying to create the user, then route to the ProfilesController's new or edit action (not sure which I should be using). Here's what I have thus far: Models: class User < ActiveRecord::Base has_one :profile end class Profile < ActiveRecord::Base belongs_to :user end Routes: map.resources :users do |user| user.resource :profile end new_user_profile GET /users/:user_id/profile/new(.:format) {:controller=>"profiles", :action=>"new"} edit_user_profile GET /users/:user_id/profile/edit(.:format) {:controller=>"profiles", :action=>"edit"} user_profile GET /users/:user_id/profile(.:format) {:controller=>"profiles", :action=>"show"} PUT /users/:user_id/profile(.:format) {:controller=>"profiles", :action=>"update"} DELETE /users/:user_id/profile(.:format) {:controller=>"profiles", :action=>"destroy"} POST /users/:user_id/profile(.:format) {:controller=>"profiles", :action=>"create"} users GET /users(.:format) {:controller=>"users", :action=>"index"} POST /users(.:format) {:controller=>"users", :action=>"create"} new_user GET /users/new(.:format) {:controller=>"users", :action=>"new"} edit_user GET /users/:id/edit(.:format) {:controller=>"users", :action=>"edit"} user GET /users/:id(.:format) {:controller=>"users", :action=>"show"} PUT /users/:id(.:format) {:controller=>"users", :action=>"update"} DELETE /users/:id(.:format) {:controller=>"users", :action=>"destroy"} Controllers: class UsersController < ApplicationController # generate new-user form def new @user = User.new end # process new-user-form post def create @user = User.new(params[:user]) if @user.save redirect_to new_user_profile_path(@user) ... end end # generate edit-user form def edit @user = User.find(params[:id]) end # process edit-user-form post def update @user = User.find(params[:id]) respond_to do |format| if @user.update_attributes(params[:user]) flash[:notice] = 'User was successfully updated.' format.html { redirect_to(users_path) } format.xml { head :ok } ... end end end class ProfilesController < ApplicationController before_filter :get_user def get_user @user = User.find(params[:user_id]) end # generate new-profile form def new @user.profile = Profile.new @profile = @user.profile end # process new-profile-form post def create @user.profile = Profile.new(params[:profile]) @profile = @user.profile respond_to do |format| if @profile.save flash[:notice] = 'Profile was successfully created.' format.html { redirect_to(@profile) } format.xml { render :xml => @profile, :status => :created, :location => @profile } ... end end end # generate edit-profile form def edit @profile = @user.profile end # generate edit-profile-form post def update @profile = @user.profile respond_to do |format| if @profile.update_attributes(params[:profile]) flash[:notice] = 'Profile was successfully updated.' # format.html { redirect_to(@profile) } format.html { redirect_to(user_profile(@user)) } format.xml { head :ok } else format.html { render :action => "edit" } format.xml { render :xml => @profile.errors, :status => :unprocessable_entity } end end end Edit-User View: ... <% form_for(@user) do |f| %> ... New-Profile View: ... <% form_for([@user,@profile]) do |f| %> .. I'm having two problems: When saving an edit to the User model, the UsersController attempts to route to http://localhost:3000/users/1/profile.%23%3Cprofile:0x10438e3e8%3E, instead of http://localhost:3000/users/1/profile When the new-profile form is being rendered, it throws an error that reads: undefined method `user_profiles_path' for # Is it better to create a blank profile when the user is created (in the UsersController), then edit it OR follow the rest-ful convention of creating the profile in the ProfilesController (as I have done)? What am I missing? I did review Associating Two Models in Rails (user and profile), but it didn't address my needs. Thanks for your time.

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  • Using NHibernate with an EAV data model

    - by devonlazarus
    I'm trying to leverage NH to map to a data model that is a loose interpretation of the EAV/CR data model. I have most of it working but am struggling with mapping the Entity.Attributes collection. Here are the tables in question: -------------------- | Entities | -------------------- | EntityId PK |-| | EntityType | | -------------------- | ------------- | V -------------------- | EntityAttributes | ------------------ --------------------------- -------------------- | Attributes | | StringAttributes | | EntityId PK,FK | ------------------ --------------------------- | AttributeId FK | -> | AttributeId PK | -> | StringAttributeId PK,FK | | AttributeValue | | AttributeType | | AttributeName | -------------------- ------------------ --------------------------- The AttributeValue column is implemented as an sql_variant column and I've implemented an NHibernate.UserTypes.IUserType for it. I can create an EntityAttribute entity and persist it directly so that part of the hierarchy is working. I'm just not sure how to map the EntityAttributes collection to the Entity entity. Note the EntityAttributes table could (and does) contain multiple rows for a given EntityId/AttributeId combination: EntityId AttributeId AttributeValue -------- ----------- -------------- 1 1 Blue 1 1 Green StringAttributes row looks like this for this example: StringAttributeId AttributeName ----------------- -------------- 1 FavoriteColor How can I effectively map this data model to my Entity domain such that Entity.Attributes("FavoriteColors") returns a collection of favorite colors? Typed as System.String?

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  • UpdatePanel, Repeater, DataBinding Problem

    - by Gordon Carpenter-Thompson
    In a user control, I've got a Repeater inside of an UpdatePanel (which id displayed inside of a ModalPopupExtender. The Repeater is databound using an array list of MyDTO objects. There are two buttons for each Item in the list. Upon binding the ImageURL and CommandArgument are set. This code works fine the first time around but the CommandArgument is wrong thereafter. It seems like the display is updated correctly but the DTO isn't and the CommandArgument sent is the one that has just been removed. Can anybody spot any problems with the code? ASCX <asp:UpdatePanel ID="ViewDataDetail" runat="server" ChildrenAsTriggers="true"> <Triggers> <asp:PostBackTrigger ControlID="ViewDataCloseButton" /> <asp:AsyncPostBackTrigger ControlID="DataRepeater" /> </Triggers> <ContentTemplate> <table width="100%" id="DataResults"> <asp:Repeater ID="DataRepeater" runat="server" OnItemCommand="DataRepeater_ItemCommand" OnItemDataBound="DataRepeater_ItemDataBound"> <HeaderTemplate> <tr> <th><b>Name</b></th> <th><b>&nbsp;</b></th> </tr> </HeaderTemplate> <ItemTemplate> <tr> <td> <b><%#((MyDTO)Container.DataItem).Name%></b> </td> <td> <asp:ImageButton CausesValidation="false" ID="DeleteData" CommandName="Delete" runat="server" /> <asp:ImageButton CausesValidation="false" ID="RunData" CommandName="Run" runat="server" /> </td> </tr> <tr> <td colspan="2"> <table> <tr> <td>Description : </td> <td><%#((MyDTO)Container.DataItem).Description%></td> </tr> <tr> <td>Search Text : </td> <td><%#((MyDTO)Container.DataItem).Text%></td> </tr> </table> </td> </tr> </ItemTemplate> </asp:Repeater> </table> </ContentTemplate> </asp:UpdatePanel> Code-Behind public DeleteData DeleteDataDelegate; public RetrieveData PopulateDataDelegate; public delegate ArrayList RetrieveData(); public delegate void DeleteData(String sData); protected void Page_Load(object sender, EventArgs e) { //load the initial data.. if (!Page.IsPostBack) { if (PopulateDataDelegate != null) { this.DataRepeater.DataSource = this.PopulateDataDelegate(); this.DataRepeater.DataBind(); } } } protected void DataRepeater_ItemCommand(object source, RepeaterCommandEventArgs e) { if (e.CommandName == "Delete") { if (DeleteDataDelegate != null) { DeleteDataDelegate((String)e.CommandArgument); BindDataToRepeater(); } } else if (e.CommandName == "Run") { String sRunning = (String)e.CommandArgument; this.ViewDataModalPopupExtender.Hide(); } } protected void DataRepeater_ItemDataBound(object source, RepeaterItemEventArgs e) { RepeaterItem item = e.Item; if (item != null && item.DataItem != null) { MyDTO oQuery = (MyDTO)item.DataItem; ImageButton oDeleteControl = (ImageButton) item.FindControl("DeleteData"); ImageButton oRunControl = (ImageButton)item.FindControl("RunData"); if (oDeleteControl != null && oRunControl !=null) { oRunControl.ImageUrl = "button_expand.gif"; oRunControl.CommandArgument = "MyID"; oDeleteControl.ImageUrl = "btn_remove.gif"; oDeleteControl.CommandArgument = "MyID"; } } } public void BindDataToRepeater() { this.DataRepeater.DataSource = this.PopulateDataDelegate(); this.DataRepeater.DataBind(); } public void ShowModal(object sender, EventArgs e) { BindDataToRepeater(); this.ViewDataModalPopupExtender.Show(); }

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  • Symbol '#' in XML attribute name produses DOMException

    - by kilonet
    the following code (using iText library): PdfStamper stamp = new PdfStamper(reader, outputStream); AcroFields form = stamp.getAcroFields(); String name = "form1[0].#subform[0].Table1[0].#subformSet[0].Row[2].#field[0]"; form.setField(name, ""); produces the following error: org.w3c.dom.DOMException: INVALID_CHARACTER_ERR: An invalid or illegal XML character is specified. at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.checkQName(CoreDocumentImpl.java:2571) at com.sun.org.apache.xerces.internal.dom.ElementNSImpl.setName(ElementNSImpl.java:117) at com.sun.org.apache.xerces.internal.dom.ElementNSImpl.<init>(ElementNSImpl.java:80) at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.createElementNS(CoreDocumentImpl.java:2084) at com.lowagie.text.pdf.XfaForm$Xml2SomDatasets.insertNode(Unknown Source) at com.lowagie.text.pdf.AcroFields.setField(Unknown Source) at com.lowagie.text.pdf.AcroFields.setField(Unknown Source) obviously this is because of '#' sign in field name. This field's name come from AcroFields.getFields() collection and it seems very strange that setting back this value produces an error. Are there any ways of dealing with this error without changing real field name?

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  • Building a list of favorites from Core Data

    - by Jim
    I'm building an app with two tabs. The first tab has a main tableview that connects to a detail view of the row. The second tab will display a tableView based on the user adding content to it by tapping a button on the detail view. My question is this. What is the correct design pattern to do this? Do I create a second ManagedObjectContext/ManagedObjectContextID then save that context to a new persistent store or can the MOC be saved to the existing store without affecting the original tableview? I've looked at CoreData Recipes and CoreData Books and neither deal with multiple stores although books does deal with multiple MOC's. Any reference would be great.

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  • Proper way of deleting records with Codeigniter

    - by luckytaxi
    I came across another Stackoverflow post regarding Get vs Post and it made me think. With CI, my URL for deleting a record is http://domain.com/item/delete/100, which deletes record id 100 from my DB. The record_id is pulled via $this->uri->segment. In my model I do have a where clause that checks that the user is indeed the owner of that record. A user_id is stored in a session inside the DB. Is that good enough? My understanding is, POST should be used for one time modification for data and GET is for retrieving regards (e.g. viewing an item or permalink).

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  • How should one import large amounts of data for FIT/Fitnesse tests?

    - by Lachlan
    We have a scheduling engine with large amounts of test data to test all the scenarios, so test automation is critical. We're currently hoping to use FIT/Fitnesse. However a single test has quite a large table of test data, so it doesn't fit very well into the mould of "two or three inputs, one or more outputs" that Fitnesse uses in its examples. Hopefully the other functionality of Fitnesse makes it worth using it. I hear that there is a way to initialize an application for a FIT test with an Excel spreadsheet - not the Spreadsheet to Fitness function, mind you - but I haven't been able to find it so far. Once the whole spreadsheet is loaded into the application, and the application does its thing, we plan to compare either a number of output rows, or perhaps just the last row, to see if the test passes. The application is currently pulling test data from a database for manual tests, but writing to a database, then initializing from it, is not preferred because of the performance impact. The application is written in C#.

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  • What is all this stuff in the CKEditor folder?

    - by Ashley Ward
    A while ago I downloaded the latest version (3.1) of the CKEditor text editor. The directory name was ckeditor and I deleted the ckeditor/_source and ckeditor/_samples sub-directories, then I referenced the ckeditor.js file in my html pages, like so : <script type="text/javascript" src="ckeditor/ckeditor.js"></script> this works well. To make config changes, I have been modifying the ckeditor/config.js file. However, as of late, I have been reading various web resources that say 'do not delete the _source' folder and other such ominous messages. What is this _source folder? What is all the stuff at the root of the ckeditor folder? and, What is safe to remove from the folder?

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  • Create many constrained, random permutation of a list

    - by Eyal
    I need to make a random list of permutations. The elements can be anything but assume that they are the integers 0 through x-1. I want to make y lists, each containing z elements. The rules are that no list may contain the same element twice and that over all the lists, the number of times each elements is used is the same (or as close as possible). For instance, if my elements are 0,1,2,3, y is 6, and z is 2, then one possible solution is: 0,3 1,2 3,0 2,1 0,1 2,3 Each row has only unique elements and no element has been used more than 3 times. If y were 7, then 2 elements would be used 4 times, the rest 3.

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  • Django: Adding inline formset rows without javascript

    - by Brant
    This post relates to this: http://stackoverflow.com/questions/520421/add-row-to-inlines-dynamically-in-django-admin Is there a way to achive adding inline formsets WITHOUT using javascript? Obviously, there would be a page-refresh involved. So, if the form had a button called 'add'... I figured I could do it like this: if request.method=='POST': if 'add' in request.POST: PrimaryFunctionFormSet = inlineformset_factory(Position,Function,extra=1) prims = PrimaryFunctionFormSet(request.POST) Which I thought would add 1 each time, then populate the form with the post data. However, it seems that the extra=1 does not add 1 to the post data.

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  • NerdDinner form validation DataAnnotations ERROR in MVC2 when a form field is left blank.

    - by Edward Burns
    Platform: Windows 7 Ultimate IDE: Visual Studio 2010 Ultimate Web Environment: ASP.NET MVC 2 Database: SQL Server 2008 R2 Express Data Access: Entity Framework 4 Form Validation: DataAnnotations Sample App: NerdDinner from Wrox Pro ASP.NET MVC 2 Book: Wrox Professional MVC 2 Problem with Chapter 1 - Section: "Integrating Validation and Business Rule Logic with Model Classes" (pages 33 to 35) ERROR Synopsis: NerdDinner form validation ERROR with DataAnnotations and db nulls. DataAnnotations in sample code does not work when the database fields are set to not allow nulls. ERROR occurs with the code from the book and with the sample code downloaded from codeplex. Help! I'm really frustrated by this!! I can't believe something so simple just doesn't work??? Steps to reproduce ERROR: Set Database fields to not allow NULLs (See Picture) Set NerdDinnerEntityModel Dinner class fields' Nullable property to false (See Picture) Add DataAnnotations for Dinner_Validation class (CODE A) Create Dinner repository class (CODE B) Add CREATE action to DinnerController (CODE C) This is blank form before posting (See Picture) This null ERROR occurs when posting a blank form which should be intercepted by the Dinner_Validation class DataAnnotations. Note ERROR message says that "This property cannot be set to a null value. WTH??? (See Picture) The next ERROR occurs during the edit process. Here is the Edit controller action (CODE D) This is the "Edit" form with intentionally wrong input to test Dinner Validation DataAnnotations (See Picture) The ERROR occurs again when posting the edit form with blank form fields. The post request should be intercepted by the Dinner_Validation class DataAnnotations. Same null entry error. WTH??? (See Picture) See screen shots at: http://www.intermedia4web.com/temp/nerdDinner/StackOverflowNerdDinnerQuestionshort.png CODE A: [MetadataType(typeof(Dinner_Validation))] public partial class Dinner { } [Bind(Include = "Title, EventDate, Description, Address, Country, ContactPhone, Latitude, Longitude")] public class Dinner_Validation { [Required(ErrorMessage = "Title is required")] [StringLength(50, ErrorMessage = "Title may not be longer than 50 characters")] public string Title { get; set; } [Required(ErrorMessage = "Description is required")] [StringLength(265, ErrorMessage = "Description must be 256 characters or less")] public string Description { get; set; } [Required(ErrorMessage="Event date is required")] public DateTime EventDate { get; set; } [Required(ErrorMessage = "Address is required")] public string Address { get; set; } [Required(ErrorMessage = "Country is required")] public string Country { get; set; } [Required(ErrorMessage = "Contact phone is required")] public string ContactPhone { get; set; } [Required(ErrorMessage = "Latitude is required")] public double Latitude { get; set; } [Required(ErrorMessage = "Longitude is required")] public double Longitude { get; set; } } CODE B: public class DinnerRepository { private NerdDinnerEntities _NerdDinnerEntity = new NerdDinnerEntities(); // Query Method public IQueryable<Dinner> FindAllDinners() { return _NerdDinnerEntity.Dinners; } // Query Method public IQueryable<Dinner> FindUpcomingDinners() { return from dinner in _NerdDinnerEntity.Dinners where dinner.EventDate > DateTime.Now orderby dinner.EventDate select dinner; } // Query Method public Dinner GetDinner(int id) { return _NerdDinnerEntity.Dinners.FirstOrDefault(d => d.DinnerID == id); } // Insert Method public void Add(Dinner dinner) { _NerdDinnerEntity.Dinners.AddObject(dinner); } // Delete Method public void Delete(Dinner dinner) { foreach (var rsvp in dinner.RSVPs) { _NerdDinnerEntity.RSVPs.DeleteObject(rsvp); } _NerdDinnerEntity.Dinners.DeleteObject(dinner); } // Persistence Method public void Save() { _NerdDinnerEntity.SaveChanges(); } } CODE C: // ************************************** // GET: /Dinners/Create/ // ************************************** public ActionResult Create() { Dinner dinner = new Dinner() { EventDate = DateTime.Now.AddDays(7) }; return View(dinner); } // ************************************** // POST: /Dinners/Create/ // ************************************** [HttpPost] public ActionResult Create(Dinner dinner) { if (ModelState.IsValid) { dinner.HostedBy = "The Code Dude"; _dinnerRepository.Add(dinner); _dinnerRepository.Save(); return RedirectToAction("Details", new { id = dinner.DinnerID }); } else { return View(dinner); } } CODE D: // ************************************** // GET: /Dinners/Edit/{id} // ************************************** public ActionResult Edit(int id) { Dinner dinner = _dinnerRepository.GetDinner(id); return View(dinner); } // ************************************** // POST: /Dinners/Edit/{id} // ************************************** [HttpPost] public ActionResult Edit(int id, FormCollection formValues) { Dinner dinner = _dinnerRepository.GetDinner(id); if (TryUpdateModel(dinner)){ _dinnerRepository.Save(); return RedirectToAction("Details", new { id=dinner.DinnerID }); } return View(dinner); } I have sent Wrox and one of the authors a request for help but have not heard back from anyone. Readers of the book cannot even continue to finish the rest of chapter 1 because of these errors. Even if I download the latest build from Codeplex, it still has the same errors. Can someone please help me and tell me what needs to be fixed? Thanks - Ed.

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