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  • Use only some parts of Django?

    - by Hanno Fietz
    I like Django, but for a particular application I would like to use only parts of it, but I'm not familiar enough with how Django works on the inside, so maybe someone can point me into the right direction as to what I have to check out. Specifically, I want to use: The models and database abstraction The caching API, although I want to avoid database lookups by caching, not HTML generation, and since the caching framework in Django is intended for the latter, I'm not sure yet whether that's really appropriate. I would not use: Templating urlconfigs Or, more exactly, I'm neither using HTTP nor HTML. So basically, I have a different input / output chain than usual. Can this work? My personal killer feature in Django is the Object / database mapping that I can do with the models, so if there's another technology (doesn't have to be Python, I'm in the design phase and I'm pretty agnostic about languages and platforms) that gives me the same abilities, that would be great, too.

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  • Binding jQuery UI plugin after $.load

    - by TomWilsonFL
    I have a function that attaches the jQuery UI DatePicker (with my options) to a passed jQuery object: function bindDatepicker($obj) { if ($obj == null) $obj = $("input.date"); $obj.datepicker( { appendText: '(yyyy-mm-dd)', autoSize: true, changeMonth: true, changeYear: true, closeText: 'Done', dateFormat: 'yy-mm-dd', defaultDate: '+1m', minDate: +1, numberOfMonths: 2 } ); } I call this at the beginning of every page to bind it to input elements: $(function() { bindDatepicker($("input.date")); }); This works fine. My problem comes in when I load form elements using $.load(). I cannot attach the DatePicker to any of the loaded elements. For example: $("#id").load("urlToLoad", function() { bindDatepicker($("input.date")); }); Loads the form elements into a div just fine, but will not attach the DatePicker. Why is this? I am stumped. :( Thanks, Tom

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  • Javascript clears a variable after there is no further reference it

    - by Praveen Prasad
    It is said, javascript clears a variable from memory after its being referenced last. just for the sake of this question i created a JS file with only one variable; //file start //variable defined var a=["Hello"] //refenence to that variable alert(a[0]); // //file end no further reference to that variable, so i expect javascript to clear varaible 'a' Now i just ran this page and then opened firebug and ran this code alert(a[0]); Now this alerts the value of variable, If the statement "Javascript clears a variable after there is no further reference it" is true how come alert() shows its value. Is it because all variable defined in global context become properties of window object, and since even after the execution file window objects exist so does it properties.

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  • Getting an entry before and after a given entry in a Django Queryset

    - by Vernon
    I am creating a simple blog as part of a website and I am getting stuck on something that I am assuming is simple. If I call any blog post, say by it's title, from a queryset, how can I get the entry before and after the post in it's published order. I can iterate over the whole thing, get the position of the entry I have and use that to call the one before and the one after. But that is a long bit of code for something that I am sure I can do more simply. What I want would be something like this: next_post = Posts.object.filter(title=current_title).order_by("-published")[-1] Of course because of the filter, it is not going to work, but just to give you the idea of what I am looking for.

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  • Scala and HttpClient: How do I resolve this error?

    - by Benjamin Metz
    I'm using scala with Apache HttpClient, and working through examples. I'm getting the following error: /Users/benjaminmetz/IdeaProjects/JakartaCapOne/src/JakExamp.scala Error:Error:line (16)error: overloaded method value execute with alternatives (org.apache.http.HttpHost,org.apache.http.HttpRequest)org.apache.http.HttpResponse <and> (org.apache.http.client.methods.HttpUriRequest,org.apache.http.protocol.HttpContext)org.apache.http.HttpResponse cannot be applied to (org.apache.http.client.methods.HttpGet,org.apache.http.client.ResponseHandler[String]) val responseBody = httpclient.execute(httpget, responseHandler) Here is the code with the error and line in question highlighted: import org.apache.http.client.ResponseHandler import org.apache.http.client.HttpClient import org.apache.http.client.methods.HttpGet import org.apache.http.impl.client.BasicResponseHandler import org.apache.http.impl.client.DefaultHttpClient object JakExamp { def main(args : Array[String]) : Unit = { val httpclient: HttpClient = new DefaultHttpClient val httpget: HttpGet = new HttpGet("www.google.com") println("executing request..." + httpget.getURI) val responseHandler: ResponseHandler[String] = new BasicResponseHandler val responseBody = httpclient.execute(httpget, responseHandler) // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ println(responseBody) client.getConnectionManager.shutdown } } I can successfully run the example in java...

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  • How to add the ImageMagick install to my path on Ubuntu

    - by Josh
    I have had been on a roller coaster trying to get ImageMagick to work on my Ubuntu slice. I Whenever I try to upload an image I get the following error: /tmp/stream.1170.0 is not recognized by the 'identify' command. If I type 'which identify' I get: /usr/local/bin/identify If I run '/usr/local/bin/identify' or just 'identify', I get the following error: /usr/local/bin/identify: error while loading shared libraries: libMagickCore.so.3: cannot open shared object file: No such file or directory If I run '/usr/bin/identify', ImageMagick is run just fine. How can I set my path to where when Paperclip runs the identify command, it points to /usr/bin/identify? Thanks. p.s. I have tried adding this to paperclip.rb: Paperclip.options[:command_path] = '/usr/bin' and Paperclip.options[:command_path] = '/usr/local/bin'

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  • C#, weird optimization

    - by Snake
    Hi, I'm trying to read my compiled C# code. this is my code: using(OleDbCommand insertCommand = new OleDbCommand("...", connection)) { // do super stuff } But! We all know that a using gets translated to this: { OleDbCommand insertCommand = new OleDbCommand("...", connection) try { //do super stuff } finally { if(insertCommand != null) ((IDisposable)insertCommand).Dispose(); } } (since OleDbCommand is a reference type). But when I decompile my assembly (compiled with .NET 2.0) I get this in Resharper: try { insertCommand = new OleDbCommand("", connection); Label_0017: try { //do super stuff } finally { Label_0111: if ((insertCommand == null) != null) { goto Label_0122; } insertCommand.Dispose(); Label_0122:; } I'm talking about this line: if ((insertCommand == null) != null). True is not null, it never is, nor is false. So how is my object disposed properly? WTF? Thanks! -Kristof

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  • too much recursion

    - by Dänu
    Hey guys, I got an error in javascript and it won't get away. :-) In the little recursive thingy following, I want to replace a value inside a (nested) object. var testobj = { 'user': { 'name': 'Mario', 'password': 'itseme' } }; updateObject('emesti', 'password', testobj) function updateObject(_value, _property, _object) { for(var property in _object) { if(property == _property) { _object[property] = _value; } else if(objectSize(_object) > 0) { updateObject(_value, _property, _object[property]); } } return _object }; function objectSize(_object) { var size = 0, key; for (key in _object) { if (_object.hasOwnProperty(key)) size++; } return size; }; After running this, firefox throws the exception "too much recursion" on the line else if(objectSize(_object) > 0) { .

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  • What's the reason both Image and Bitmap classes don't implement a custom equality/hashcode logic?

    - by devoured elysium
    From MSDN documentation, it seems as both GetHashCode() and Equals() haven't been overriden in Bitmap. Neither have them been overriden in Image. So both classes are using the Object's version of them just compares references. I wasn't too convinced so I decided to fire up Reflector to check it out. It seems MSDN is correct in that matter. So, is there any special reason why MS guys wouldn't implement "comparison logic", at least for the Bitmap class? I find it is kinda acceptable for Image, as it is an abstract class, but not so much for the Bitmap class. I can see in a lot of situations calculating the hash code can be an expensive operation, but it'd be alright if it used some kind of lazy evaluation (storing the computed hash code integer in a variable a variable, so it wouldn't have to calculate it later again). When wanting to compare 2 bitmaps, will I have to resort to having to run all over the picture comparing each one of its pixels? Thanks

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  • What is the most stupid coded solution you have read/improved/witnessed?

    - by Rigo Vides
    And for stupid I mean Illogical, non-effective, complex(the bad way), ugly code style. I will start: We had a requirement there when we needed to hide certain objects given the press of a button. So this framework we were using at the time provided a way to tag objects and retrieve all the objects with a certain tag in a complete iterable collection. So I presented the most logically solution given these conditions to my partner: Me: you know, tag all the objects we needed to hide with the same tag, then call the function to get them all, iterate trough them and make them hidden. Partner: I don't know, that is hardcoding for me... Me: So what do you suggest? 20 mins later... Partner: I don't know... let's put a tag to all the objects to be hidden like this, 1, 2, 3, 4, 5, 6, 7 (and so for each object to be hidden), Then we make a for from 1 to n (where n was the number of objects to hide) and we hide them all there!

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  • Java special characters

    - by Binaryrespawn
    Hi all, this must be quite simple but I am having great difficulty. You see I am trying to find a string within another string as follows. e = input.indexOf("-->"); s = input.indexOf("<!--"); input = input.replace(input.substring(s, e + 3), " "); The integers e and s are returning -1 in that it was not found and this is causing the replace method to fail. The test string I am using is "Chartered Certified<!--lol--> Accountants (ACCA)". I tried to creat a new string object and pass in the string as an argument as follows e=input.indexOf(new String("<!--")); This yielded the same result. Any ideas ?

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  • JavaFX Threading issue - GUI freezing while method call ran.

    - by David Meadows
    Hi everyone, I hoped someone might be able to help as I'm a little stumped. I have a javafx class which runs a user interface, which includes a button to read some text out loud. When you press it, it invokes a Java object which uses the FreeTTS java speech synth to read out loud a String, which all works fine. The problem is, when the speech is being read out, the program stops completely until its completed. I'm not an expert on threaded applications, but I understand that usually if I extend the Thread class, and provided my implementation of the speech synth code inside an overridden run method, when I call start on the class it "should" create a new Thread, and run this code there, allowing the main thread which has the JavaFX GUI on to continue as normal. Any idea why this isn't the case? Thanks a lot in advance!

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  • form not showing

    - by Luke
    Perhaps this has something to do with it being the mainForm, but I'll ask the question. I have my mainForm that is the first to load when the program is booted. I then click a button called Add, which should open a new form, and close the mainForm. The problem is, is shows the new form for a split second, then closes both. The code: private void addFrmBtn_Click(object sender, EventArgs e) { saveForm saveform = new saveForm(); saveform.Show(); this.Close(); }

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  • Using an EJB inside a JAX-RS resource class in RestEasy?

    - by Laird Nelson
    I would like to have the following kind of resource class work when deployed under RestEasy in JBoss 6: @Path("Something") public class Foo { @EJB private SomeService service @GET public Object frobnicate() { assert service != null; // JBoss blows up here return result; } } Two questions: It is a limitation of RestEasy, not of the Java EE specification, right, that RestEasy can't inject anything annotated with @EJB? What have people done to work around this limitation? My developers are about to surge forward with hard-coded JNDI lookups (e.g. context.lookup(someHardCodedNameHere)) because no one can find a workaround to this specification violation at the present time. I really want to avoid this. Lastly, I've looked at using CDI, but the story here isn't much better as RestEasy and CDI still aren't talking to each other. Thanks in advance for any pointers.

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  • Using ssh for remote command

    - by user1663479
    I need to use ssh to execute a remote command such as: ssh -l jsilva xman /vol/2011/linux_x64/exe/mx201111.exe When I execute ssh I receive error message: /cmg/2011.11/linux_x64/exe/mx201111.exe: error while loading shared libraries: libmkl_intel_lp64.so: cannot open shared object file: No such file or directory This application uses the variable LD_LIBRARY_PATH. I inserted this variable into /etc/profiles in localhost and remote host. The filesystem /cmg is mounted by autofs for both hosts (local and remote). Anybody have idea how to resolve this problem? Thanks!

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  • Execute HtttModule for extionsionless URL only

    - by Malcolm Frexner
    I have an httpModule which has to run before an ActionMethod. I dont want that it is executed when a request for an image comes in. For some reasons I realy need an HttpModule and cant use an ActionFilter What is the way to do this? public class PostAuthenticateModule : IHttpModule { public void Init(HttpApplication app) { app.PostAuthenticateRequest += new EventHandler(this.OnEnter); } private void OnEnter(object source, EventArgs eventArgs) { } private static void Initialize() { } public void Dispose() { } } web.config <httpModules> <add type="PostAuthenticateModule.PostAuthenticateModule , PostAuthenticateModule" name="PostAuthenticateModule"/> </httpModules>

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  • get a function of external file

    - by user295189
    I am using jQuery and my js file thats calling a jquery function resides in totally different directory than jQuery is in. I need to call this function reloadPage like this from js file reloadPage({param1:'First Parameter', param2:ID}); but it gives me an error Line: 341 Error: Object doesn't support this property or method Line 341 is reloadPage({param1:'First Parameter', param2:ID});. What can I do to run this function from outside the directory? I tried parent.reloadPage({param1:'First Parameter', param2:ID}); But that didnt work either.

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  • Suggest books/learning path for writing smartphone apps

    - by chibineku
    I have been writing a lot of HTML, CSS, PHP, MySQL and JavaScript lately working on a website, and I would like to move on to 'proper' OOP with an eye to making smartphone apps. I would like to at least cover iPhone and BlackBerry, which means learning Objective C, Cocoa and Java, before learning the specifics of interacting with the devices themselves, such as native bluetooth/GPS/internet API/methods. I would appreciate pointers to books or resources that will get me from a procedural web developer to object oriented app-maker. Most of the reviews of books on Objective C and Java have been mixed. I am about to start working my way through Beginning Java Objects (APress) which I have borrowed from my brother, so even if it's not a good intro at least it was free!

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  • handle when callback to a dealloced delegate?

    - by athanhcong
    Hi all, I implemented the delegate-callback pattern between two classes without retaining the delegate. But in some cases, the delegate is dealloced. (My case is that I have a ViewController is the delegate object, and when the user press back button to pop that ViewController out of the NavigationController stack) Then the callback method get BAD_EXE: if (self.delegate != nil && [self.delegate respondsToSelector:selector]) { [self.delegate performSelector:selector withObject:self withObject:returnObject]; } I know the delegate-callback pattern is implemented in a lot of application. What is your solution for this?

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  • ADO.NET parameters from TextBox

    - by Geo Ego
    I'm trying to call a parameterized stored procedure from SQL Server 2005 in my C# Winforms app. I add the parameters from TextBoxeslike so (there are 88 of them): cmd.Parameters.Add("@CustomerName", SqlDbType.VarChar, 100).Value = CustomerName.Text; I get the following exception: "System.InvalidCastException: Failed to convert parameter value from a TextBox to a String. ---> System.InvalidCastException: Object must implement IConvertible." The line throwing the error is when I call the query: cmd.ExecuteNonQuery(); I also tried using the .ToString() method on the TextBoxes, which seemed pointless anyway, and threw the same error. Am I passing the parameters incorrectly?

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  • Get the caret position when losing focus in WPF

    - by DrLazer
    I have two textbox's. I have an event setup for the "onLostFocus" of the textbox's. If i finish typing a word into both boxes one after the other all is well. At the point where i click back on the first textbox i want to click halfway through the word (perfectly resonable thing for a user to do). When the onLostFocus event fires here is my code : void tbox_LostFocus(object sender, RoutedEventArgs e) { IInputElement focusedelement = FocusManager.GetFocusedElement(this); if (focusedelement is TextBox) { TextBox focusedTextBox = focusedelement as TextBox; int focusIndex = m_commandsStacker.Children.IndexOf(focusedTextBox); int caretIndex = focusedTextBox.CaretIndex; The caret index is 0. At that point I refresh the whole form and set parameters and all other kinds of whizzery, storing the texbox index and caret position to put everything back the same. Why does it return 0 and not the position where the caret should be halfway between the word?

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  • Erubis block helper throwing error with concat

    - by DEfusion
    I have a couple of block helpers, here's a simple example of what I'm doing: def wrap_foo foo, &block data = capture(&block) content = " <div class=\"foo\" id=\"#{foo}\"> #{data} </div>" concat( content ) end I'm just trying out erubis and it's giving me the following error: You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.<< Removing the call to concat removes the error but ends up with my wrapper not being rendered Using: Rails 2.3.5 Erubis 2.6.5 And tried this gem that helps Erubis (though 2.6.4) and Rails 2.3 play better together

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  • Extraction Event

    - by Anicho
    So I have the following code: public override void Extract(object sender, ExtractionEventArgs e) { if (e.Response.HtmlDocument != null) { var myParam = e.Request.QueryStringParameters.Where(parameter => parameter.Name == QueryName).Select(parameter => parameter.Value).Distinct(); myParam. // add the extracted value to the web performance test context e.WebTest.Context.Add(this.ContextParameterName, myParam.ToString()); e.Success = true; return; } // If the extraction fails, set the error text that the user sees e.Success = false; e.Message = String.Format(CultureInfo.CurrentCulture, "Not Found: {0}", QueryName); } It's returning: System.Linq.Enumerable+<DistinctItem>d_81`1[system.string] I am expecting something along the lines of: 0152-1231-1231-123d My question is how do I extract the querystring's actual value from extractioneventargs. They say it's possible, but I have no idea.

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  • How to show Label1.Text for each item in a foreach statement?

    - by Mike108
    I want to show each item Id that is doing now dynamically in a foreach statement. But the following code only shows the last item Id in Label1.Text. How to show Label1.Text for each item in a foreach statement? I use asp.net C#. protected void Button1_Click(object sender, EventArgs e) { List<int> list = new List<int>() { 1,2,3,4,5 }; foreach (var item in list) { Label1.Text = string.Format("I'm doing item {0} now.", item.ToString()); Thread.Sleep(1 * 1000); } }

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  • Using java to send/receive different objects through UDP

    - by AAA
    Hello everyone, I am writing a program in Java where there are communications between two or more machines using UDP. My application sends objects after serializing them through the network to the other machine where it will be deserialized and dealt with it. I was successful in sending one kind of objects so far. My problem is that I want the sender to be able to send different kind of objects, and for the receiver to be able to receive them and cast them again to their appropriate types. However, since UDP allocates a byte buffer then receive the data into the buffer, it is impossible to cast or detect the type of the received object as different objects have different sizes. Is there is a way that I can use to send different kind of objects using UDP and then receive them at the other end? (I don't ask for code here, just some ideas) Thanks

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