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  • Filtering manager for django model, customized by user

    - by valya
    Hi there! I have a model, smth like this: class Action(models.Model): def can_be_applied(self, user): #whatever return True and I want to override its default Manager. But I don't know how to pass the current user variable to the manager, so I have to do smth like this: [act for act in Action.objects.all() if act.can_be_applied(current_user)] How do I get rid of it by just overriding the manager? Thanks.

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  • Borland linker error

    - by david-tran
    Hello, I am recompling a project using Borland C++ Builder 6 and LMD tool 2010. The recompile process failed due to linker error. The message was: "[Linker Fatal error] Fatal unable to open file LMDOneInstance.OBJ" I searched the whole hard drive, but could not find any reference to LMDOneInstance.OBJ Any help is appreciated. Thanks in advance. David

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  • c++ FFT Beat detection library?

    - by mokaschitta
    Hi, I am currently looking around for a good allround beat detection library / source code in C++ since I found it really hard to achieve satisfying results with the beat detection code I wrote myself using this tutorial: http://www.gamedev.net/reference/programming/features/beatdetection/ It's especially really hard if you want to make it work with any kind of music so I was wondering if there is something usable out there allready? Thanks!

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  • Schedule timer with NSTimer makes the task run faster than expected

    - by Hoang Pham
    I schedule a timer with NSTimer's function in viewWillAppear as follows: minutesTimer = nil; minutesTimer = [NSTimer scheduledTimerWithTimeInterval:60 target:self selector:@selector(updateScrollViewItems) userInfo:NULL repeats:YES]; With this function call, I expect it to call the selector updateScrollViewItems every minute, but it does not, it update items faster than expected (around some seconds). What is the cause of this unexpected behavior?

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  • Become UIScrollViewDelegate delegate for UITableView

    - by Brian
    I have a UITableView instance variable. I want to be able to register my view controller to be the UIScrollViewDelegate for my UITableView controller. I have already tried tableView.delegate = self; But when scrolling, my methods - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate don't get called. Any suggestions?

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  • When to use weak references in Python?

    - by bodacydo
    Can anyone explain usage of weak references? The documentation doesn't explain it precisely, it just says that the GC can destroy the object linked to via a weak reference at any time. Then what's the point of having an object that can disappear at any time? What if I need to use it right after it disappeared? Can you please explain them with some good examples? Thanks, Boda Cydo.

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  • Rails has_many with dinamyc :conditions

    - by Fabiano PS
    Hello! What I want is to create a Model that connects with other by a has_many in a dinamic way, without the foreing_key like this: has_many :faixas_aliquotas, :class_name => 'Fiscal::FaixaAliquota', :conditions => ["regra_fiscal = ?", ( lambda { return self.regra_fiscal } ) ] But I get the error: : SELECT * FROM "fis_faixa_aliquota" WHERE ("fis_faixa_aliquota".situacao_fiscal_id = 1 AND (regra_fiscal = E'--- !ruby/object:Proc {}')) Is my will makeable? I don't wanna black magic solution..

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  • Regex to Match White Space or End of String

    - by Kirk
    I'm trying to find every instance of @username in comment text and replace it with a link. Here's my PHP so far: $comment = preg_replace('/@(.+?)\s/', '<a href="/users/${1}/">@${1}</a> ', $comment); The only problem is the regex is dependent upon there being whitespace after the @username reference. Can anyone help me tweak this so it will also match if it is at the end of the string?

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  • Introduction to 3D Graphics Programming

    - by Jacob Relkin
    Hi everyone! I'm a self-taught programmer with absolutely nil 3D programming experience. A client of mine has related to me an idea for an iPhone app that requires OpenGL ES 2.0 for it's inherently complex 3D structure and animations. Where do I start on this ( albeit long ) journey toward OpenGL ES competence? I'm willing to put in a tremendous amount of time and effort into learning, and if i could please get some pointers to where I should start and what to expect, that would be awesome!

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  • EF OrderBy method doesn't work with joins

    - by dudeNumber4
    Following works (ordered by name): from t in context.Table1.OrderBy( "it.Name" ) select t This doesn't work (no ordering): from t in context.Table1.OrderBy( "it.Name" ) join t2 in context.Table2 on t.SomeId equals t2.SomeId select t Nor does this (trying to reference the parent table to order): from t in context.Table1 join t2 in context.Table2.OrderBy( "it.Table1.Name" ) on t.SomeId equals t2.SomeId select t Nor does this (trying to order on the child table): from t in context.Table1 join t2 in context.Table2.OrderBy( "it.ChildName" ) on t.SomeId equals t2.SomeId select t How do I cause OrderBy not to be ignored while joining?

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  • open default browser with a post in Delphi

    - by Brad
    I know in delphi you can open the default browser with: ShellExecute(self.WindowHandle,'open','www.website.com',nil,nil, SW_SHOWNORMAL); but I'm wanting to know if there is a way to automatically post data on the new opened brower window OR auto fill the login data (even in firefox, safari,etc) Thanks -Brad

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  • What kind parser that phpdoc use ?

    - by justjoe
    When the first time, i install phpdoc, i love it so much. And i want to create its mini version for myself use. So, can anybody give me information about what kind of parser it has. and Maybe a image reference on how it works (so i can picture it visually in my mind) ?

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  • iPhone - how to pass an object to a button action

    - by Mike
    I have to pass an object to an button's action... something like [myButton addTarget:self action:@selector(sendIt:MY_OBJECT) forControlEvents:UIControlEventTouchDown]; I cannot set a variable and use that on the method because I am on a static class. How do I do that? thanks for any help.

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  • iPhone - how to pass an object to a button action

    - by Mike
    I have to pass an object to an button's action... something like [myButton addTarget:self action:@selector(sendIt:MY_OBJECT) forControlEvents:UIControlEventTouchDown]; I cannot set a variable and use that on the method because I am on a static class. How do I do that? thanks for any help.

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  • LinkButton in a DataList

    - by erasmus
    I have a datalist and in its header template I have a linkbutton.In my codebehind file I wrote as I've always written: ((LinkButton)(DataList1.FindControl("LinkButton1"))).Enabled = false; but this gives me the error: Object reference not set to an instance of an object. How can I access this linkbutton?

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  • Password protected PDF using C#

    - by balaweblog
    I am creating a pdf document using C# code in my process. I need to protect the docuemnt with some standard password like "123456" or some account number. I need to do this without any reference dlls like pdf writer. I am generating the PDF file using SQL Reporting services reports. Is there are easiest way.

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  • MessageQueue.BeginReceive() null ref error - c#

    - by ltech
    Have a windows service that listens to a msmq. In the OnStart method is have this protected override void OnStart(string[] args) { try { _queue = new MessageQueue(_qPath);//this part works as i had logging before and afer this call //Add MSMQ Event _queue.ReceiveCompleted += new ReceiveCompletedEventHandler(queue_ReceiveCompleted);//this part works as i had logging before and afer this call _queue.BeginReceive();//This is where it is failing - get a null reference exception ; } catch(Exception ex) { EventLogger.LogEvent(EventSource, EventLogType, "OnStart" + _lineFeed + ex.InnerException.ToString() + _lineFeed + ex.Message.ToString()); } } where private MessageQueue _queue = null;

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  • MPMoviePlayerController doesn't implement MPMediaPlayback protocol as advertised?

    - by goren
    I'm trying to use the MPMediaPlayback protocol's currentPlaybackRate() to slow down a video. I'm confused though as the class MPMoviePlayerController states that: You can control most aspects of playback programmatically using the methods and properties of the MPMediaPlayback protocol, to which this class conforms. Except just above in the header here: http://developer.apple.com/iphone/library/documentation/MediaPlayer/Reference/MPMoviePlayerController_Class/MPMoviePlayerController/MPMoviePlayerController.html it doesn't seem to. All I want to do is slow down the playback rate for a video.

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