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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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  • jQuery: attr('height')

    - by jerrygarciuh
    Hi folks, I have a container div with the following CSS: #container { position:relative; overflow:hidden; width:200px; height:200px; } Why does this: alert('height is ' + $("#container").attr('height')); Return that height is undefined? Thanks, JG

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  • "type not defined" exception with WF4 RC

    - by avi1234
    Hi, I`m gettin the following exception while invoking my workflow (dynamically): The following errors were encountered while processing the workflow tree: 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "TryCast(simplerule_out,OutputBase2)". Type 'OutputBase2' is not defined. 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "Res". Type 'OutputBase2' is not defined. 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "Res". Type 'OutputBase2' is not defined. 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "New List(Of OutputBase2)". Type 'OutputBase2' is not defined. The workflow is very simple and worked fine on VS 2010 beta 2! All I`m trying to do is to create new list of my abstract custom type "OutputBase2". public class OutputBase2 { public OutputBase2() { } public bool Succeeded { get; set; } } class Example { public void Exec() { ActivityBuilder builder = new ActivityBuilder(); builder.Name = "act1"; var res = new DynamicActivityProperty { Name = "Res", Type = typeof(OutArgument<List<OutputBase2>>), Value = new OutArgument<List<OutputBase2>>() }; builder.Properties.Add(res); builder.Implementation = new Sequence(); ((Sequence)builder.Implementation).Activities.Add(new Assign<List<OutputBase2>> { To = new VisualBasicReference<List<OutputBase2>> { ExpressionText = res.Name }, Value = new VisualBasicValue<List<OutputBase2>>("New List(Of OutputBase2)") }); Activity act = getActivity(builder); var res2 = WorkflowInvoker.Invoke(act); } string getXamlStringFromActivityBuilder(ActivityBuilder activityBuilder) { string xamlString; StringBuilder stringBuilder = new StringBuilder(); System.IO.StringWriter stringWriter = new System.IO.StringWriter(stringBuilder); System.Xaml.XamlSchemaContext xamlSchemaContext = new System.Xaml.XamlSchemaContext(); System.Xaml.XamlXmlWriter xamlXmlWriter = new System.Xaml.XamlXmlWriter(stringWriter, xamlSchemaContext); System.Xaml.XamlWriter xamlWriter = System.Activities.XamlIntegration.ActivityXamlServices.CreateBuilderWriter(xamlXmlWriter); System.Xaml.XamlServices.Save(xamlWriter, activityBuilder); xamlString = stringBuilder.ToString(); return xamlString; } public Activity getActivity(ActivityBuilder t) { string xamlString = getXamlStringFromActivityBuilder(t); System.IO.StringReader stringReader = new System.IO.StringReader(xamlString); Activity activity = System.Activities.XamlIntegration.ActivityXamlServices.Load(stringReader); return activity; } } Thanks!

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  • asp.net regex help

    - by dominic
    Hi ive got this regular expression and that extracts numbers from a string string.Join(null,System.Text.RegularExpressions.Regex.Split(expr, "[^\\d]")); so eg, the format of my string is like this strA:12, strB:14, strC:15 so the regex returns 121415 how can I modify the expression to return 12,14,15 instead, any suggestions please

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  • Why does System.Windows.MessageBoxImage have enumeration sub-items with the same value?

    - by devdigital
    Hi, I'm trying to write my own abstraction over the MessageBoxImage enumeration, and see that MessageBoxImage is defined as: namespace System.Windows { public enum MessageBoxImage { None = 0, Error = 16, Hand = 16, Stop = 16, Question = 32, Exclamation = 48, Warning = 48, Asterisk = 64, Information = 64, } } How does the Show method determine whether to display an Error image or a Hand image? How would I write a method which takes a MessageBoxImage type, and return a CustomMessageBoxImage type which maps to the MessageBoxImage type, as I can't include both MessageBoxImage.Error and MessageBoxImage.Hand in the same switch statement?

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  • Enable 2-way databinding on nested listview

    - by Lars Pedersen
    I have a ASP.NET FormView, that - via an ObjectDataSource - is bound to my EventOrder-object: [Serializable] public class EventOrder { [Serializable] public class OrderTicket { public int Qty { get; set; } public int Id { get { return this.Ticket.Id; } } public Ticket Ticket { get; set; } public double TicketPrice { get; set; } } [Serializable] public class OrderExtra { public int Qty { get; set; } public int Id { get { return this.Extra.Id; } } public Extra Extra { get; set; } } public Event Event { get; set; } public List<OrderTicket> OrderTickets { get; set; } public List<OrderExtra> OrderExtras { get; set; } public UserProfile UserProfile { get; set; } public List<Fee> Fees { get; set; } public List<Discount> Discounts { get; set; } public EventOrder() { this.OrderExtras = new List<OrderExtra>(); this.OrderTickets = new List<OrderTicket>(); this.Fees = new List<Fee>(); this.Discounts = new List<Discount>(); } } In my FormView, I have a bindingexpression on an inner listview for my collection of OrderTickets: <asp:ListView Visible="false" runat="server" DataKeyNames="Id" ID="lvTickets" DataSource='<%# Bind("OrderTickets") %>'> <ItemTemplate> <asp:TextBox ID="TextBox5" Text='<%# Bind("Qty") %>' runat="server"></asp:TextBox> <asp:Label ID="Label1" runat="server" Text='<%# Eval("Ticket.Title") %>'></asp:Label> <asp:Label ID="Label2" runat="server" Text='<%# Eval("TicketPrice") %>'></asp:Label><br /> </ItemTemplate> My problem is that the Qty-property isn't databound to the object when the parent container is updated. Is it possible to have this kind of parent-child relation with 2-way databinding? Can I force the child listview to update it's bound dataobject when I submit the form?

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  • Django models query

    - by Hulk
    Code: class criteria(models.Model): details = models.CharField(max_length = 512) Headerid = models.ForeignKey(Header) def __unicode__(self): return self.id() the details corresponds to a textarea in the UI and a validation is done for 512 characters but when this is saved. /home/project/django/django/core/handlers/base.py in get_response, line 109 Is this any thing related with schema or number of characters entered from UI

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  • Using Valgrind tool how can I detect which object trying to access 0x0 address ?

    - by Davit Siradeghyan
    I have this output when trying to debug Program received signal SIGSEGV, Segmentation fault 0x43989029 in std::string::compare (this=0x88fd430, __str=@0xbfff9060) at /home/devsw/tmp/objdir/i686-pc-linux-gnu/libstdc++-v3/include/bits/char_traits.h:253 253 { return memcmp(__s1, __s2, __n); } Current language: auto; currently c++ Using valgrind I getting this output ==12485== Process terminating with default action of signal 11 (SIGSEGV) ==12485== Bad permissions for mapped region at address 0x0 ==12485== at 0x1: (within path_to_my_executable_file/executable_file)

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  • Returning IEnumerable from an indexer, bad practice?

    - by fearofawhackplanet
    If I had a CarsDataStore representing a table something like: Cars -------------- Ford | Fiesta Ford | Escort Ford | Orion Fiat | Uno Fiat | Panda Then I could do IEnumerable<Cars> fords = CarsDataStore["Ford"]; Is this a bad idea? It's iconsistent with the other datastore objects in my api (which all have a single column PK indexer), and I'm guessing most people don't expect an indexer to return a collection in this situation.

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  • Entityframework 4.0 .CreateQuery<T> and OrderBy exception

    - by Sammy
    Hi Guys, I thought this was fixed in 4.0 I have this method public IQueryable<T> All(Expression<Func<T,object>> sort) { return EntityContext.CreateQuery<T>(EntityName).AsQueryable<T>().OrderBy(sort); } this throws the following exception Unable to cast the type 'System.Int32' to type 'System.Object'. LINQ to Entities only supports casting Entity Data Model primitive types. Source is System.Data.Entity any idea how to fix this or if theres any workaround

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  • How to set Content-Type header charset in OpenRasta

    - by Sergey Mirvoda
    When I return my object as JSON via JsonDataContractCodec OpenRasta sets Content-Type header to application/json but ignores charset part of content type. When I use Chrome it sends GET request with folowing header: Accept-Charset:windows-1251,utf-8;q=0.7,*;q=0.3 and all my utf-8 encoded json objects goes wrong. I tried to override OperationResult with no luck. OpenRasta overwrites my header with codec's one.

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  • Best way to define an immutable class in Objective C

    - by Patrick Marty
    Hi, I am a newbie in Objective C and I was wondering what is the best way to define an immutable class in Objective-C (like NSString for example). I want to know what are the basic rules one has to follow to make a class immutable. I think that : setters shouldn't be provided if properties are used, they should be readonly accessInstanceVariablesDirectly must be override and return NO Did I forget something ? Thanks

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  • XAML ComboBox Bind to Method

    - by griegs
    If I have a method in my C#; public CollectionView Months { get { CollectionView retList = new Enumerations.Months().ToCollectionView<Enumerations.Months>(); return retList; } } And I have a ComboBox; <ComboBox x:Name="ddlMonth" Grid.Row="3" Grid.Column="1" ItemsSource="{Binding Source={StaticResource Months}}"/> How can I bind my ComboBox to my method? I should add I'm a complete xaml newbie.

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  • create a new option and inject into select box using mootools 1.2

    - by Avinash
    Hi i have one AJAX function which return the list of countries. It works fine. My problem is that want to load that countries in on select box which is already in HTML and is empty means no option value in it. I want to know that how can i create a new option element and inject into the select box using moo tools 1.2 I have used below code but its not working in IE. var NewOption = new Option("Select Sub Category",'0'); NewOption.inject($('nSub_nIndustryID')) Thanks Avinash

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  • hibernate get unique field result

    - by cometta
    i use below to get unique "departmentCode" , but by using distinct, my list only return 'departmentCode' all other fields are not retrieved from table, how to retrieve other fields as well like 'divisionCode' and make sure 'departmentCode' is always unique? DetachedCriteria crit = DetachedCriteria.forClass(Company.class); crit.setProjection(Projections.distinct(Projections.property("departmentCode")));

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  • C# Nested Property Accessing overloading OR Sequential Operator Overloading

    - by Tim
    Hey, I've been searching around for a solution to a tricky problem we're having with our code base. To start, our code resembles the following: class User { int id; int accountId; Account account { get { return Account.Get(accountId); } } } class Account { int accountId; OnlinePresence Presence { get { return OnlinePresence.Get(accountId); } } public static Account Get(int accountId) { // hits a database and gets back our object. } } class OnlinePresence { int accountId; bool isOnline; public static OnlinePresence Get(int accountId) { // hits a database and gets back our object. } } What we're often doing in our code is trying to access the account Presence of a user by doing var presence = user.Account.Presence; The problem with this is that this is actually making two requests to the database. One to get the Account object, and then one to get the Presence object. We could easily knock this down to one request if we did the following : var presence = UserPresence.Get(user.id); This works, but sort of requires developers to have an understanding of the UserPresence class/methods that would be nice to eliminate. I've thought of a couple of cool ways to be able to handle this problem, and was wondering if anyone knows if these are possible, if there are other ways of handling this, or if we just need to think more as we're coding and do the UserPresence.Get instead of using properties. Overload nested accessors. It would be cool if inside the User class I could write some sort of "extension" that would say "any time a User object's Account property's Presence object is being accessed, do this instead". Overload the . operator with knowledge of what comes after. If I could somehow overload the . operator only in situations where the object on the right is also being "dotted" it would be great. Both of these seem like things that could be handled at compile time, but perhaps I'm missing something (would reflection make this difficult?). Am I looking at things completely incorrectly? Is there a way of enforcing this that removes the burden from the user of the business logic? Thanks! Tim

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  • Facebook Connect 'next' error

    - by Mark
    I am trying to experiment with the new facebook authentication system, and I can't getthe login to work. I'm getting the following error message: API Error Code: 100 API Error Description: Invalid parameter Error Message: next is not owned by the application. The url that is being sent to facebook is: http://www.facebook.com/connect/uiserver.php?app_id=444444444444444&next=http%3A%2F%2Fstatic.ak.fbcdn.net%2Fconnect%2Fxd_proxy.php%23%3F%3D%26cb%3Df357eceb0361a8a%26origin%3Dhttp%253A%252F%252Fwww.mysite.com%252Ff38fea4f9ea573%26relation%3Dopener%26transport%3Dpostmessage%26frame%3Df23b800f8a78%26result%3DxxRESULTTOKENxx&display=popup&channel=http%3A%2F%2Fwww.mysite.com%2Ffbtester.php&cancel=http%3A%2F%2Fstatic.ak.fbcdn.net%2Fconnect%2Fxd_proxy.php%23%3F%3D%26cb%3Df6095a98598be8%26origin%3Dhttp%253A%252F%252Fwww.mysite.com%252Ff38fea4f9ea573%26relation%3Dopener%26transport%3Dpostmessage%26frame%3Df23b800f8a78%26result%3DxxRESULTTOKENxx&locale=en_US&return_session=1&session_version=3&fbconnect=1&canvas=0&legacy_return=1&method=permissions.request Note that the 'Next' variable in the url is: next=http%3A%2F%2Fstatic.ak.fbcdn.net%2Fconnect%2Fxd_proxy.php%23%3F%3D%26cb%3Df357eceb0361a8a%26origin%3Dhttp%253A%252F%252Fwww.mysite.com%252Ff38fea4f9ea573%26relation%3Dopener%26transport%3Dpostmessage%26frame%3Df23b800f8a78%26result%3DxxRESULTTOKENxx Any ideas what could be going wrong? All I've done is copy and paste the facebook login demo code from facebook's website: <?php define('FACEBOOK_APP_ID', 'your application id'); define('FACEBOOK_SECRET', 'your application secret'); function get_facebook_cookie($app_id, $application_secret) { $args = array(); parse_str(trim($_COOKIE['fbs_' . $app_id], '\\"'), $args); ksort($args); $payload = ''; foreach ($args as $key => $value) { if ($key != 'sig') { $payload .= $key . '=' . $value; } } if (md5($payload . $application_secret) != $args['sig']) { return null; } return $args; } $cookie = get_facebook_cookie(FACEBOOK_APP_ID, FACEBOOK_SECRET); ?> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml"> <body> <?php if ($cookie) { ?> Your user ID is <?= $cookie['uid'] ?> <?php } else { ?> <fb:login-button></fb:login-button> <?php } ?> <div id="fb-root"></div> <script src="http://connect.facebook.net/en_US/all.js"></script> <script> FB.init({appId: '<?= FACEBOOK_APP_ID ?>', status: true, cookie: true, xfbml: true}); FB.Event.subscribe('auth.login', function(response) { window.location.reload(); }); </script> </body> </html> Thanks for the help!

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  • I18N: Does Time always come after Date?

    - by Ian Boyd
    Does the time always come after the date, with a space in between, in every culture on earth? i see that Microsoft FCL assumes that it does: public string get_FullDateTimePattern() { if (this.fullDateTimePattern == null) { this.fullDateTimePattern = this.LongDatePattern + " " + this.LongTimePattern; } return this.fullDateTimePattern; } Is this an assumption i can make in every development language for every culture?

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  • Installing PyGraphViz on Windows, Python 2.7

    - by user574043
    I can't install pygraphviz on Windows XP. I'm using Python27. Before to launch the setup I've changet these two variables of the setup.py file library_path="C:\\Archivos de programa\\Graphviz 2.28\\bin" include_path="C:\\Archivos de programa\\Graphviz 2.28\\include\\graphviz" Then I've launched the setup. I'm using mingw32 as a compiler. I don't know what can I do now. I'm using the following command: C:\Python27\pygraphviz-1.1>c:\python27\python setup.py build -c mingw32 And I've got the folling result library_path=C:\Archivos de programa\Graphviz 2.28\bin include_path=C:\Archivos de programa\Graphviz 2.28\include\graphviz running build running build_py running build_ext building 'pygraphviz._graphviz' extension C:\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall "-IC:\Archivos de programa\Graphviz 2.28\include\graphviz" -Ic:\python27\include -Ic:\python 27\PC -c pygraphviz/graphviz_wrap.c -o build\temp.win32-2.7\Release\pygraphviz\graphviz_wrap.o pygraphviz/graphviz_wrap.c: In function 'agattr_label': pygraphviz/graphviz_wrap.c:2855:5: warning: return makes integer from pointer without a cast writing build\temp.win32-2.7\Release\pygraphviz\_graphviz.def Traceback (most recent call last): File "setup.py", line 146, in <module> package_data = package_data File "c:\python27\lib\distutils\core.py", line 152, in setup dist.run_commands() File "c:\python27\lib\distutils\dist.py", line 953, in run_commands self.run_command(cmd) File "c:\python27\lib\distutils\dist.py", line 972, in run_command cmd_obj.run() File "c:\python27\lib\distutils\command\build.py", line 127, in run self.run_command(cmd_name) File "c:\python27\lib\distutils\cmd.py", line 326, in run_command self.distribution.run_command(command) File "c:\python27\lib\distutils\dist.py", line 972, in run_command cmd_obj.run() File "c:\python27\lib\distutils\command\build_ext.py", line 340, in run self.build_extensions() File "c:\python27\lib\distutils\command\build_ext.py", line 449, in build_extensions self.build_extension(ext) File "c:\python27\lib\distutils\command\build_ext.py", line 531, in build_extension target_lang=language) File "c:\python27\lib\distutils\ccompiler.py", line 741, in link_shared_object extra_preargs, extra_postargs, build_temp, target_lang) File "c:\python27\lib\distutils\cygwinccompiler.py", line 260, in link target_lang) File "c:\python27\lib\distutils\unixccompiler.py", line 218, in link libraries) File "c:\python27\lib\distutils\ccompiler.py", line 1121, in gen_lib_options opt = compiler.runtime_library_dir_option(dir) File "c:\python27\lib\distutils\unixccompiler.py", line 285, in runtime_library_dir_option compiler = os.path.basename(sysconfig.get_config_var("CC")) File "c:\python27\lib\ntpath.py", line 198, in basename return split(p)[1] File "c:\python27\lib\ntpath.py", line 170, in split d, p = splitdrive(p) File "c:\python27\lib\ntpath.py", line 125, in splitdrive if p[1:2] == ':': TypeError: 'NoneType' object is not subscriptable Any idea on how to solve it over windows? In other computer with Ubuntu I've installed without problems.

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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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  • Best way to get all digits from a string with regex

    - by Chris Marisic
    Is there any better way to get take a string such as "(123) 455-2344" and get "1234552344" from it than doing this: var matches = Regex.Matches(input, @"[0-9]+", RegexOptions.Compiled); return String.Join(string.Empty, matches.Cast<Match>() .Select(x => x.Value).ToArray()); Perhaps a regex pattern that can do it in a single match? I couldn't seem to create one to achieve that though.

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  • iPhone mapKit annotation for Current Location

    - by Simon
    Hello Im currently strugglung with annotations. how can i prevent the AnnotationLable for the blue GPS-point. (Here is an Image) - (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(MKAnnotation *) annotation{ if (annotation == mapView.userLocation) { return nil; } the function above isnt working, and i realized that i can't compare two coordinates. Any hint is welcome. Simon

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