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  • Multiple remote_form_for on the same page causes duplicate ids

    - by Ben Scheirman
    I've got a rails app that displays a list of items called modules. I'm iterating over these, rendering a partial for each one that includes a remote_form_for call. This all works, but fails HTML validation because my form text fields all have the same id. Is there a :prefix option on the form (or something else) I can use to get around this? Update: (some code) //_module_form.html.erb <% remote_form_for app_module do |f| %> <%= f.label :name %> <%= f.text_field :name %> <%= submit_tag 'Save' %> <%end %> //parent page <% @thing.modules.each do |app_module| %> <%= render :partial => "module_form", :locals => { :app_module => app_module } %> <% end %> So if I have more than 1 item in the collection, I render the identical form on the same page, and the form id and textbox id are duplicated. I can customize the form id pretty easily, but what about the text_box, since the controller is looking for specific named controls?

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  • Selecting an item from a very large list

    - by Ben Fulton
    Suppose I have a list of a couple of thousand organizations and a user needs to be able to select one of them. The list is too large to populate in a dropdown at page load, and the user often knows what they want but it's not the first part of the organization name. That is, they know "Collections" but not that the precise name of the organization is "Department of Collections". So the user will need/want to type in some information. It's easy enough to use an autocompleting textbox of some kind, but I don't want to allow the user to type in random text - they have to choose one of the organizations explicitly. What's the best solution?

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  • JSF - Creating an overlay for popup panels.

    - by Ben
    Hi, I've created an overlay that will popup whenever someone wants to upload a file to the system. The Gui looks like this (when the overlay is up) I have two problems with this: I attached a a4j:support object that, onclick, makes the overlay disappear. The problem with this is that when I click the upload button on the upload component, support catches the click event and closes the overlay with the upload component before I have the chance to finish the operation. I chose two different style classes. One for the overlay and one for the upload panel. But the styling of the overlay takes over the upload component and it becomes transparent as well. The implementation looks something like this: <h:panelgroup layout="block" styleClass="overlayClass"> <rich:fileUpload styleClass="uploadStyleClass"... /> <a4j:support event="onclick" action="#{mrBean.switchOverlayState}" reRender="..."/> </h:panelGroup> The CSS: .overlayClass { Opacity: 0.5; position: fixed; left: 0; right: 0; top: 0; bottom: 0; background: #000; } .uploadStyleClass { opacity: 1.0; ... } Thanks for the help!

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  • Dynamically creating a treeview in HTML with indent lines in ASP.Net

    - by Ben
    Hi, im quite new to HTML, and am trying to create a proffessional looking TreeView. I can not use the in built treeview in ASP.Net as i need to point the target of the selection to another frame (I have tried, and this doesn't seem possible). My treeview is built up as follows: Folder1 ChildOne ChildTwo ChildThree Folder2 ChildOne ChildTwo ChildThree I have the collapsing of the folders working, but would like to know how to format this treeview so it has dotted lines down to the child nodes (as most treeviews tend to have). How would i go about this? Cheers.

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  • Common NSNotification mistakes?

    - by Ben Packard
    A simplification... A building has an array of apartment objects. Each apartment has a single currentTenant. These tenants are of type Person. Note that currentTenant doesn't have a reference to the apartment, so can't send information back up the chain. When a tenant has a plumbing issue he raises an NSNotification: [nc postNotificationName:@"PlumbingIssue" object:self]; Each Apartment observes notifications ONLY FROM it's own current tenant (this is set up when the apartment is built, before there is a current tenant): [nc addObserver:self selector:@selector(alertBuildingManager:) name:@"PlumbingIssue" object:[self currentTenant]; When the apartment receives a notification from it's own currentTenant, it sends it's own notification, "PlumberRequired", along with the apartment number and the currentTenant in an NSDictionary. Apartment observes these notifications, which it will take from any apartment (or other object): [nc addObserver:self selector:@selector(callPlumber) name:@"PlumberRequired" object:nil]; Is there something I could be getting fundamentally wrong here? What's happening is that the apartment is receiving notifications from any and all currentTenants, rather than jus it's own. Sorry that the actual code is a bit too unwieldy to post. Was just wondering if there's a gap in my understanding about observing notifications from a particular sender?

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  • flex builder 3 compiler won't show errors or compile specific pages

    - by Ben
    In flexbuilder 3 for some mxml files I can purposely put in syntax errors and the compiler will seem to compile the specific page(but actually not compile it) or report any errors for that page. Is there any way that you know of to get the compiler to report the errors to me so I can get it to compile the page. I've tried rebuilding all and cleaning the project already.

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  • custom php function creation and install

    - by Ben Olley
    I would like to know how to create a php function that can be installed in php just like the already built in functions like : rename copy The main point I would like to achieve is a simple php function that can be called from ANY php page on the whole host without needing to have a php function within the php page / needing an include. so simply I would like to create a function that will work like this : location(); That without a given input string will output the current location of the file via echo etc

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  • Use SQL to filter the results of a stored procedure

    - by Ben McCormack
    I've looked at other questions on Stack Overflow related to this question, but none of them seemed to answer this question clearly. We have a system Stored Procedure called sp_who2 which returns a result set of information for all running processes on the server. I want to filter the data returned by the stored procedure; conceptually, I might do it like so: SELECT * FROM sp_who2 WHERE login='bmccormack' That method, though, doesn't work. What are good practices for achieving the goal of querying the returned data of a stored procedure, preferably without having to look of the code of the original stored procedure and modify it.

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  • WPF: Text wrapping not working

    - by Ben
    I've got a grid defined simply: <Grid Margin="0,5,0,0"> <Grid.ColumnDefinitions> <ColumnDefinition Width="50"></ColumnDefinition> <ColumnDefinition Width="50"></ColumnDefinition> <ColumnDefinition Width="48"></ColumnDefinition> <ColumnDefinition Width="Auto"></ColumnDefinition> </Grid.ColumnDefinitions> Then I'm trying to bind some content like this: <TextBlock TextWrapping="Wrap" Grid.Column="3" Text="{Binding Text}"> Set up like this, the text won't wrap. It simply expands the column to fit the text. If I set the Width to a fixed amount on the last column, wrapping works as expected. The problem there is that if the user widens the window, the column stays at a fixed size. How can I get the column to size dynamically with the width of the grid, but still wrap the text within it?

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  • Could I be writing this code better?

    - by Ben Dauphinee
    Is there any website out there somewhere where a programmer such as myself might be able to post pieces of code to be looked at by more experienced people? I am thinking of something that programmers could use to have advice given on how to improve their ability. I really like the atmosphere here, but am not sure that posting code for review here is appropriate.

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  • Is this ruby code thread safe?

    - by Ben K.
    Is this code threadsafe? It seems like it should be, because @myvar will never be assigned from multiple threads (assuming block completes in < 1s). But do I need to be worried about a situation where the second block is trying to read @myvar as it's being written? require 'rubygems' require 'eventmachine' @myvar = Time.now.to_i EventMachine.run do EventMachine.add_periodic_timer(1) do EventMachine.defer do @myvar = Time.now.to_i # some calculation and reassign end end EventMachine.add_periodic_timer(0.5) do puts @myvar end end

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  • ValidateInputAttribute bug in VS 2010 RC / ASP.NET MVC 2.0?

    - by Ben
    Am I doing something wrong here? I have a text area on a view and am posting back the html contents. In VS 2008 and MVC 1.0 the following code successfully prevents input validation: [HttpPost] [ValidateInput(false)] public ActionResult Index(int? id) { return View(); } If I execute this code in VS 2010 / MVC 2.0 I always get this error: A potentially dangerous Request.Form value was detected from the client (body=""). Any ideas?

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  • I need to order a list that is dependant on another list. how to change both lists?

    - by Ben Fossen
    I have a Matlab program that generates a list x = 6.1692 8.1863 5.8092 8.2754 6.0891 the program also outputs another list aspl = 680 637 669 599 693. The two lists are on equal length and the first element in list x is related to the first element in list aspl. I need to graph the two lists but want list aspl to be in order from smallest to largest. How would I go about doing this? If I need to move the first element in aspl to position 4 in the list, then the first element of list x also needs to be moved to position 4 in list x. The numbers above are not important they are just examples, the actual program generates hundereds of numbers. for example x = 6.1692 8.1863 5.8092 8.2754 initially aspl = 680 637 669 599 693 after changing aspl to ascending order this is how x should look. x = 5.8092 8.1863 5.8092 6.1692 8.2754 aspl = 599 637 669 680 693

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  • charset problem?

    - by Ben Fransen
    Hi all, I have a bugging problem. For a website I made there are search engine friendly URL's generated. The only problem is there are ß-chars in the url too. Chars like ö, ï, ä, ü etc. are placed correct. But with the ß-char there is a diamond-icon with a questionmark in it. I thought it had to do with the charset which is used but i've tried both UTF-8 and iso-8859-1. Both without luck. I need to have the correct character in the url for the readability of deeplinks. Hope to hear from you!

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  • jQuery oembed plugin z-index problem

    - by Ben
    I'm using the jQuery oembed plugin to display videos from a Vimeo feed. The only problem is they display over the top of my navigation menu. I have tried setting the z-index of the menu but this makes no difference. A common suggestion seems to be to set the wmode parameter to transparent or opaque. However, passing this as a parameter to the oembed function makes no difference. Thanks

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  • Reorganizing MySQL table to multiple rows by timestamp.

    - by Ben Burleson
    OK MySQL Wizards: I have a table of position data from multiple probes defined as follows: +----------+----------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +----------+----------+------+-----+---------+-------+ | time | datetime | NO | | NULL | | | probe_id | char(3) | NO | | NULL | | | position | float | NO | | NULL | | +----------+----------+------+-----+---------+-------+ A simple select outputs something like this: +---------------------+----------+----------+ | time | probe_id | position | +---------------------+----------+----------+ | 2010-05-05 14:16:42 | 00A | 0.0045 | | 2010-05-05 14:16:42 | 00B | 0.0005 | | 2010-05-05 14:16:42 | 00C | 0.002 | | 2010-05-05 14:16:42 | 01A | 0 | | 2010-05-05 14:16:42 | 01B | 0.001 | | 2010-05-05 14:16:42 | 01C | 0.0025 | | 2010-05-05 14:16:43 | 00A | 0.0045 | | 2010-05-05 14:16:43 | 00B | 0.0005 | | 2010-05-05 14:16:43 | 00C | 0.002 | | 2010-05-05 14:16:43 | 01A | 0 | | . | . | . | | . | . | . | | . | . | . | +---------------------+----------+----------+ However, I'd like to output something like this: +---------------------+--------+--------+-------+-----+-------+--------+ | time | 00A | 00B | 00C | 01A | 01B | 01C | +---------------------+--------+--------+-------+-----+-------+--------+ | 2010-05-05 14:16:42 | 0.0045 | 0.0005 | 0.002 | 0 | 0.001 | 0.0025 | | 2010-05-05 14:16:43 | 0.0045 | 0.0005 | 0.002 | 0 | 0.001 | 0.0025 | | 2010-05-05 14:16:44 | 0.0045 | 0.0005 | 0.002 | 0 | 0.001 | 0.0025 | | 2010-05-05 14:16:45 | 0.0045 | 0.0005 | 0.002 | 0 | 0.001 | 0.0025 | | 2010-05-05 14:16:46 | 0.0045 | 0.0005 | 0.002 | 0 | 0.001 | 0.0025 | | 2010-05-05 14:16:47 | 0.0045 | 0.0005 | 0.002 | 0 | 0.001 | 0.0025 | | . | . | . | . | . | . | . | | . | . | . | . | . | . | . | | . | . | . | . | . | . | . | +---------------------+--------+--------+-------+-----+-------+--------+ Ideally, the different probe position columns are dynamically generated based on data in the table. Is this possible, or am I pulling my hair out for nothing? I've tried GROUP BY time with GROUP_CONCAT that roughly gets the data out, but I can't separate that output into probe_id columns. mysql SELECT time, GROUP_CONCAT(probe_id), GROUP_CONCAT(position) FROM MG41 GROUP BY time LIMIT 10; +---------------------+-------------------------+------------------------------------+ | time | GROUP_CONCAT(probe_id) | GROUP_CONCAT(position) | +---------------------+-------------------------+------------------------------------+ | 2010-05-05 14:16:42 | 00A,00B,00C,01A,01B,01C | 0.0045,0.0005,0.002,0,0.001,0.0025 | | 2010-05-05 14:16:43 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:44 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:45 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:46 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:47 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:48 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:49 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:50 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | | 2010-05-05 14:16:51 | 01C,01B,01A,00C,00B,00A | 0.0025,0.001,0,0.002,0.0005,0.0045 | +---------------------+-------------------------+------------------------------------+

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  • How can I run code in a C# class definition each time any instance of the class is deserialized?

    - by Ben
    I am trying to derive a class from ObservableCollection and I need to run just a single line of code each and every time any instance of this class is deserialized. My thought was to do this: [Serializable] public class ObservableCollection2<T> : ObservableCollection<T>, ISerializable { public ObservableCollection2() : base() { } public ObservableCollection2(SerializationInfo info, StreamingContext context) : base(info, context) { // Put additional code here. } void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) { base.GetObjectData(info, context); } } But I don't have access to those base methods related to serialization. Am I forced to re-write all of the serialization manually?

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  • Haskell - function (that returns a list) on each element in a list

    - by Ben
    The assignment is to create a multiples function and I essentially want todo the following code: map (\t -> scanl (\x y -> x+y) t (repeat t)) listofnumbers The problem is that the scanl function returns a list of results rather than the one which the map function requires. So is there a function that will allow the return of lists?

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  • In the following implementation of static_strlen, why are the & and parentheses around str necessary

    - by Ben
    If I change the type to const char str[Len], I get the following error: error: no matching function for call to ‘static_strlen(const char [5])’ Am I correct that static_strlen expects an array of const char references? My understanding is that arrays are passed as pointers anyway, so what need is there for the elements to be references? Or is that interpretation completely off-the-mark? #include <iostream> template <size_t Len> size_t static_strlen(const char (&str)[Len]) { return Len - 1; } int main() { std::cout << static_strlen("oyez") << std::endl; return 0; }

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  • Silly Objective-C inheritance problem when using property

    - by Ben Packard
    I've been scratching my head with this for a couple of hours - I haven't used inheritance much. Here I have set up a simple Test B class that inherits from Test A, where an ivar is declared. But I get the compilation error that the variable is undeclared. This only happens when I add the property and synthesize declarations - works fine without them. TestA Header: #import <Cocoa/Cocoa.h> @interface TestA : NSObject { NSString *testString; } @end TestA Implementation is empty: #import "TestA.h" @implementation TestA @end TestB Header: #import <Cocoa/Cocoa.h> #import "TestA.h" @interface TestB : TestA { } @property NSString *testProp; @end TestB Implementation (Error - 'testString' is undeclared) #import "TestB.h" @implementation TestB @synthesize testProp; - (void)testing{ NSLog(@"test ivar is %@", testString); } @end

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  • How to access global variable in a view in Ruby on Rails?

    - by ben
    I have a User model. I have a Session controller, in which I have a global user variable that is assigned as follows: $user = User.authenticate(params[:session][:email], params[:session][:password]) (I've made user global just to try to solve this problem, so if there's a better way please let me know!) I need to use the email of the logged in user as a parameter to send to Flex part of my website. At the moment I'm creating the link as follows: <%= link_to "secondpage", secondpage_path(:email => @session.$user.email) But I'm getting the following error: compile error /Users/benhartney/rails_projects/talk/app/views/layouts/_header.html.erb:12: syntax error, unexpected tGVAR ..._path(:email = @session.$user.email) ).to_s); @output_buffe... There's also a little arrow pointing at $user If I remove the $ from $user, I get this error: undefined method `user' for nil:NilClass If I remove the (:email => @session.user.email) part, everything works fine, so I think all of the code except for this is ok. Can anyone tell me what I'm doing wrong? Thanks for reading!

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