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  • Rails equivalent of respond_to |format| with a straight render

    - by brad
    I'm working with ActiveResource a lot so my service models are only using XML. Thus, I have no need for a respond_to block, I literally just render :xml => @model I can't however figure out how to render a 404 header using this. I've had to resort to respond_to, which I think adds a few unnecessary method calls. Here's what I'm using: respond_to do |format| if (record_found) render :xml => @some_record else format.xml{ head :not_found } end end but I just want something like render :xml => head :not_found which doesn't work. Can anyone tell me the proper syntax?

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  • unexpected T_TRY, expecting T_FUNCTION error message, not sure why ?

    - by Rachel
    I am getting unexpected T_TRY, expecting T_FUNCTION error message and am not sure as too why am getting that, can't we use try and catch block inside class like this: class Processor { protected $dao; protected $fin; try { public function __construct($file) { //Open File for parsing. $this->fin = fopen($file,'w+') or die('Cannot open file'); // Initialize the Repository DAO. $this->dao = new Dao('some name'); } public function initiateInserts() { while (($data=fgetcsv($this->fin,5000,";"))!==FALSE) { $initiate_inserts = $this->dao->initiateInserts($data); } } public function initiateCUpdates() { while (($data=fgetcsv($this->fin,5000,";"))!==FALSE) { $initiate_updates = $this->dao->initiateCUpdates($data); } } public function initiateExecuteIUpdates() { while (($data=fgetcsv($this->fin,5000,";"))!==FALSE) { $initiate_updates = $this->dao->initiateIUpdates($data); } } } catch (Exception $e) { } }

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  • Need an ASP.NET MVC long running process with user feedback

    - by Jason
    I've been trying to create a controller in my project for delivering what could turn out to be quite complex reports. As a result they can take a relatively long time and a progress bar would certainly help users to know that things are progressing. The report will be kicked off via an AJAX request, with the idea being that periodic JSON requests will get the status and update the progress bar. I've been experimenting with the AsyncController as that seems to be a nice way of running long processes without tying up resources, but it doesn't appear to give me any way of checking on the progress (and seems to block further JSON requests and I haven't discovered why yet). After that I've tried resorting to storing progress in a static variable on the controller and reading the status from that - but to be honest that all seems a bit hacky! All suggestions gratefully accepted!

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  • Hidden features of CSS

    - by alex
    I have definitely picked up some useful tips in the hidden features style questions concerning PHP and XHTML. So here is one to cover CSS. While easy to pick up, it takes a little while to learn about everything, their default behaviors, properties etc Here are some to start the ball @charset "UTF-8"; /* set the character set. must be first line as Gumbo points out in comments */ .element { /* takes precedence over other stylings */ display: block !important; /* mozilla .... rounded corners with no images */ -moz-border-radius: 10px; /* webkit equivalent */ -webkit-border-radius: 10px } These are not so much hidden, but their use is not often widespread. What tips, tricks, rare features have you discovered with CSS?

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  • How To Test if Type is Primitive

    - by DaveDev
    Hi Guys I have a block of code that serializes a type into a Html tag. Type t = typeof(T); // I pass <T> in as a paramter, where myObj is of type T tagBuilder.Attributes.Add("class", t.Name); foreach (PropertyInfo prop in t.GetProperties()) { object propValue = prop.GetValue(myObj, null); string stringValue = propValue != null ? propValue.ToString() : String.Empty; tagBuilder.Attributes.Add(prop.Name, stringValue); } This works great, except I want it to only do this for primitive types, like string, int, double, bool etc. I want it to ignore everything else. Can anyone suggest how I do this? Or do I need to specify the types I want to allow somewhere and switch on the property's type to see if it's allowed? That's a little messy, so it'd be nice if I there was a tidier way.

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  • Can you exclude code automatically when using the publish feature in Visual Studio

    - by LarryDev
    Is their a way to exclude a block of code when you use the publish feature in visual studio. In other words say I had a log in button that did something like: // Start Exclude when publishing if (txtUserName.Text == "" && txtPassword.Password == "") { lp = new System.ServiceModel.DomainServices.Client.ApplicationServices.LoginParameters("UserName", "Password"); } else // Stop Exclude when publishing { lp = new System.ServiceModel.DomainServices.Client.ApplicationServices.LoginParameters(txtUserName.Text, txtPassword.Password); } This way when I am debugging I can just leave the username and password field blank and just click login and the application will log me on. But when the application is published the compiler woudl ignore that code and not compile it in to the application.

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  • Visual Studio 2010 shortcut to select word / expression / line / section / method?

    - by Lernkurve
    There is a shortcut Ctrl+Shift+W to select the entire word at the current cursor position. Is there a similar shortcut that keeps expanding the selected region every time I apply it? I mean, is there a shortcut which selects the word when applied once (same as Ctrl+Shift+W) and selects the entire line when applied twice in a row and selects the entire block when applied three times etc., i.e. keeps expanding the selected region step by step? I remember seeing such a shortcut, but I don't remember whether it was for Visual Studio or some other editor.

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  • May the FileInputStream.available foolish me?

    - by Tom Brito
    This FileInputStream.available() javadoc says: Returns an estimate of the number of remaining bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream. The next invocation might be the same thread or another thread. A single read or skip of this many bytes will not block, but may read or skip fewer bytes. In some cases, a non-blocking read (or skip) may appear to be blocked when it is merely slow, for example when reading large files over slow networks. I'm not sure if in this check: if (new FileInputStream(xmlFile).available() == 0) can I rely that empty files will always return zero?

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  • Drupal 6 - Including a module form in a view

    - by espais
    I'm making use of the Favorites module, in order to allow my users to favorite nodes they like. Currently, I know that there is a block available for listing out the favorites, along with the 'Add to favorites' button at the top of this list. What I'd like to do is generate the form which includes the button, and include it within each node that I generate. I'd gotten it hacked up and quickly working by copying the generated form and placing it in my views-view--fields-.tpl.php template, however I believe that doing it this way goes against the thought behind Drupal, and probably introduces security issues with the form_id and form_token being hand-written. I've attempted to call the get_form function, and have passed it the form_id that I found in the generated form code, however I can't get Drupal to recognize it. From some Googling I've noticed that generating module forms programmatically may require a hook, but I haven't been able to find any good examples of this. What is the best way to go about creating this form?

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  • Iterate through a DataTable to find elements in a List object?

    - by Darth Continent
    As I iterate through a DataTable object, I need to check each of its DataRow objects against the items in a generic string List. I found a blog post using the List's Find method along with a delegate, but whereas that example has a separate class (Person), I'm attempting something like the following using an instance of the string object: // My definition of the List object. List<string> lstAccountNumbers = new List<string>(); ... // I populate the List via its Add method. ... foreach (DataRow drCurrentRow in dtMyDataTable.Rows) { if (lstAccounts.Find(delegate(string sAccountNumber) { return sAccountNumber == drCurrentRow["AccountNumber"]; }) { Found_DoSomething(); } else { NotFound_DoSomethingElse(); } } However, with this syntax I'm receiving "Cannot implicitly convert type 'string' to 'bool'" for the if block. Could someone please clarify what I'm doing wrong and how best to accomplish what I'm trying to do?

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  • Visual Studio's CSS Intellisense - Absolute paths & MasterPage files

    - by Overflew
    Hi there. I've noticed that to get CSS-Intellisense working in VS, the paths have to be relative - Is this the case? However, it seems <link href="/resources/test.css" [...] /> is far more practical than <link href="resources/test.css" [...] /> I'm including the CSS in the master page, and don't see much good in including it as a content block, just to get the relative paths correct for each directory depth. I've had a quick try with inline code resolving the path, but no dice there either (for Intellisense). I feel I'm missing something fairly simple - What's the correct approach here to have CSS Intellisense work across the pages in the app during dev, and render fine in any deployed state? Cheers. (Note - I'm aware that a <% if (false) { % type hack is required for user controls)

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  • Remove HTTP headers from a raw response

    - by Ed
    Let's say we make a request to a URL and get back the raw response, like this: HTTP/1.1 200 OK Date: Wed, 28 Apr 2010 14:39:13 GMT Expires: -1 Cache-Control: private, max-age=0 Content-Type: text/html; charset=ISO-8859-1 Set-Cookie: PREF=ID=e2bca72563dfffcc:TM=1272465553:LM=1272465553:S=ZN2zv8oxlFPT1BJG; expires=Fri, 27-Apr-2012 14:39:13 GMT; path=/; domain=.google.co.uk Server: gws X-XSS-Protection: 1; mode=block Connection: close <!doctype html><html><head>...</head><body>...</body></html> What would be the best way to remove the HTTP headers from the response in C#? With regexes? Parsing it into some kind of HTTPResponse object and using only the body? EDIT: I'm using SOCKS to make the request, that's why I get the raw response.

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  • Search and Highlight search text in items in the Listview in WPF

    - by kiran-k
    Hi, I am using MVVM to show the database records in a gridview (ListView view). i have a textbox where we can enter the text to be searched in the results listed in the gridview. i tried many ways to highlight the search text (Not the entire row only the text matches in the record) in the records displayed in the list view but unable to highlight. i am able to find the starting and ending indexes. i tried to created rectangles using those indexes on the text block but unable to highlight. Can anyone have solution for this. Thanks in advance.

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  • Using vertical-align on an element with background-image

    - by bobo
    <style type='text/css'> #span1{ background-image:url("http://www.reoiv.com/images/rss.jpg"); background-repeat:no-repeat; cursor:pointer; display:block; float:left; height:15px; width:15px; vertical-align:text-bottom; } </style> <span id='span1'></span>???? What I would like to do is to achieve the vertical align: text-bottom effect but I am not doing it on a image element. I am doing it on an element with background-image set. If you paste the above codes here: http://htmledit.squarefree.com/ You will see that the text failed to vertically align to bottom. I would like to know how it can be done without adding extra html element if possible. Many thanks to you all.

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  • inherit properties and then change some on particular site (css)

    - by Radek
    I have three menus on this test web site. I am learning css and trying all the menus inherit all properties from menu class. The second one looks different and is not clickable. I am happy with the 3rd one, just want to make it horizontal and change its position bit. Could somebody tell me why the second menu is not click-able? how I can make the third menu vertical? I thought that display: block; for li of the 3rd menu would do the trick but I do not know the css path for that li.

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  • Streaming files from EventMachine handler?

    - by Noah
    I am creating a streaming eventmachine server. I'm concerned about avoiding blocking IO or doing anything else to muck up the event loop. From what I've read, ruby's non-blocking IO can be used to stream files in a non-blocking way, or I can call next_tick, but I'm a little unclear about which of these approaches is preferable. Part of the problem is that I have not found a good explanation of non-blocking IO library functions in ruby. Short version: Assuming a long-lived network IO operation, several wall clock minutes of streaming per file, transfer, what is the best way to do this in eventmachine without gumming up the event loop? while 1 do file.read do |bytes| @conn.send_data bytes end end I understand that the above code will block and I'm wondering what to put in its place. Also, I cannot use the FileStreamer class that is part of eventmachine as is, because I need to manipulate the data after it's read but before it's sent. Thanks, Noah

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  • Processing potentially large STDIN data, more than once

    - by d11wtq
    I'd like to provide an accessor on a class that provides an NSInputStream for STDIN, which may be several hundred megabytes (or gigabytes, though unlikely, perhaps) of data. When I caller gets this NSInputStream it should be able to read from it without worrying about exhausting the data it contains. In other words, another block of code may request the NSInputStream and will expect to be able to read from it. Without first copying all of the data into an NSData object which (I assume) would cause memory exhaustion, what are my options for handling this? The returned NSInputStream does not have to be the same instance, it simply needs to provide the same data. The best I can come up with right now is to copy STDIN to a temporary file and then return NSInputStream instances using that file. Is this pretty much the only way to handle it? Is there anything I should be cautious of if I go the temporary file route?

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  • Dreamweaver - template not recognising child files until they are opened

    - by Chris
    Hi I've got a new section for a website which I have generated for a data source and it has markup for using a Dreamweaver template. When I add the new files and folders to the site , then update my template , it doesn't find the new files to update. If I open one of the new files , make a change in the template , then it recognises the new file is using the template. So it's almost like I have to touch all the files with Dreamweaver first. I've tried to open all the new files which need to use the template but then Dreamweaver CS4 crashes, I presume because of the number of files it's opening. Anyway, does anyone know if there is a way to make Dreamweaver recognise that a block of new files belong to the template , it doesn't seem to just work automatically Thanks Chris

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  • Rails 3 - Nested layouts - LocalJumpError

    - by Art Shayderov
    Hi Nested layouts do not work in Rails 3. After I hit this I tried Rails Guides Example on a blank project (both ruby 1.9.1 and 1.8.7). LocalJumpError no block given on line <%= yield :stylesheets %. If you remove this line you will get the same error on the next yield statement. Could someone fix(patch) this? It's probably just a matter of calling block_given? in the right place. That would be great. Thanks Added on 4/3: Rails 3 beta 2 released. Problem fixed.

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  • Is it possible to have CommandManager requery only specific WPF command instead of all?

    - by aoven
    I'm trying to implement a highly responsive UI for my MVVM application, so I've chosen to have all command handlers automatically execute in a BackgroundWorker so they don't block the UI. But at the same time, I don't want the user to be able to execute the same command while it is still executing in the background. The solution seems obvious: When Executed handler is invoked, have the CanExecute handler return false Start the BackgroundWorker async When BackgroundWorker finishes, have the CanExecute handler return true again. Problem is, I need to notify WPF after step 1 and again after step 3 that CanExecute has changed and that it should be required. I know I can do it by calling CommandManager.InvalidateRequerySuggested, but that causes CanExecute handlers of all other commands to be requeried as well. Having a lot of commands, that's not good. Is there a way to ask for requery of a specific command - i.e. the one that is currently being executed? TIA

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  • Cannot hide a UIButton

    - by Neurofluxation
    Hey again, I have the following code: visitSite.hidden = YES; For some reason, when I click a UIButton and call this piece of code, the visitSite button does not hide. The code is within this block: -(IBAction)welcomeButtonPressed:(id)sender { [UIButton beginAnimations:@"welcomeAnimation" context:NULL]; [UIButton setAnimationDuration:1.5]; [UIButton setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES]; ((UIView *)sender).hidden = YES; [UIButton commitAnimations]; visitWebsite.hidden = YES; //THIS DOESN'T WORK! } Help!!

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  • Enclosing service execution in try-catch: bad practice?

    - by Sorin Comanescu
    Hi, Below is the usual Program.cs content for a windows service program: static class Program { /// <summary> /// The main entry point for the application. /// </summary> static void Main() { ServiceBase[] ServicesToRun; ServicesToRun = new ServiceBase[] { new MyService() }; ServiceBase.Run(ServicesToRun); } } Is it a bad practice to enclose the ServiceBase.Run(...) in a try-catch block? Thanks.

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  • Foreign keys in MySQL?

    - by icco
    I have been slowly learning SQL the last few weeks. I've picked up all of the relational algebra and the basics of how relational databases work. What I'm trying to do now is learn how it's implemented. A stumbling block I've come across in this, is foreign keys in MySQL. I can't seem to find much about the other than that they exist in the InnoDB storage schema that MySQL has. What is a simple example of foreign keys implemented in MySQL? Here's part of a schema I wrote that doesn't seem to be working if you would rather point out my flaw than show me a working example. CREATE TABLE `posts` ( `pID` bigint(20) NOT NULL auto_increment, `content` text NOT NULL, `time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, `uID` bigint(20) NOT NULL, `wikiptr` bigint(20) default NULL, `cID` bigint(20) NOT NULL, PRIMARY KEY (`pID`), Foreign Key(`cID`) references categories, Foreign Key(`uID`) references users ) ENGINE=InnoDB;

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  • WPF Textblock Convert Issue

    - by deep
    am usina text block in usercontrol, but am sending value to textblock from other form, when i pass some value it viewed in textblock, but i need to convert the number to text. so i used converter in textblock. but its not working <TextBlock Height="21" Name="txtStatus" Width="65" Background="Bisque" TextAlignment="Center" Text="{Binding Path=hM1,Converter={StaticResource TextConvert},Mode=OneWay}"/> converter class class TextConvert : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (value != null) { if (value.ToString() == "1") { return value = "Good"; } if (value.ToString() == "0") { return value = "NIL"; } } return value = ""; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { return (string)value; } } is it right? whats wrong in it??

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  • Displaying a DHTML layer over a Silverlight UI...

    - by Kevin Grossnicklaus
    I have a MOSS 2007 publishing site which incorporates some Silverlight components on various pages. Beyond a few areas the rest of the site is SharePoint and ASPX (i.e. standard HTML/javascript). I'm looking at incorporating a dynamic/dropdown menu to the main navigation. Unfortunately on a few of the pages the menu sits close to a Silverlight area and, when a menu is pulled down it falls "behind" the Silverlight block. Is there something simple I'm not doing or is there a limitation that Silverlight always be on top of dynamic content displayed via the rest of the HTML DOM? Any ideas? -Kevin

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