Search Results

Search found 16824 results on 673 pages for 'model binding'.

Page 499/673 | < Previous Page | 495 496 497 498 499 500 501 502 503 504 505 506  | Next Page >

  • MVC pattern and (Game) State pattern

    - by topright
    Game States separate I/O processing, game logic and rendering into different classes: while (game_loop) { game->state->io_events(this); game->state->logic(this); game->state->rendering(); } You can easily change a game state in this approach. MVC separation works in more complex way: while (game_loop) { game->cotroller->io_events(this); game->model->logic(this); game->view->rendering(); } So changing Game States becomes error prone task (switch 3 classes, not 1). What are practical ways of combining these 2 concepts?

    Read the article

  • Handling User Authentication in C#.NET?

    - by Daniel
    I am new to .NET, and don't have much experience in programming. What is the standard way of handling user authentication in .NET in the following situation? 1.In Process A, User inputs ID/Password 2.Process A sends the ID/Password to Process B over a nonsecure public channel. 3.Process B authenticates the user with the recieved ID/Password what are some of the standard cryptographic algorithms I can use in above model? The users(customers that bought my company's software) will be running the software(Process A) locally in their computer(connected to internet). I need to authenticate the users so that only registered users can run the program. Thank You!

    Read the article

  • Projecting a 3D point to 2D screen coordinate OpenTK

    - by sinsro
    Using Monotouch and OpenTK I am trying to get the screen coordinate of one 3D point. I have my world view projection matrix set up, and OpenGL makes sense of it and projects my 3D model perfectly, but how to use the same matrix to project just one point from 2D to 3D? I thought I could simply use: Vector3.Transform(ref input3Dpos, ref matWorldViewProjection, out projected2Dpos); Then have the projected screen coordinate in projected2DPos. But the resulting Vector4 does not seem to represent the proper projected screen coordinate. And I do not know how to calculate it from there on.

    Read the article

  • Display/Edit fields across tables in a Django Form

    - by jamida
    I have 2 tables/models, which for all practical purposes are the same as the standard Author/Book example, but with the additional restriction that in my application each Author can only write 0 or 1 books. (eg, the ForeignKey field in the Book model is or can be a OneToOneField, and there may be authors who have no corresponding book in the Book table.) I would like to be able to display a form showing multiple books and also show some fields from the corresponding Author table (eg author_name, author_address). I followed the example of the inlineformset and but that doesn't even display the author name in the generated form.

    Read the article

  • MVC - Calling Controller Methods

    - by JT703
    Hello, My application is following the MVC design pattern. The problem I keep running into is needing to call methods inside a Controller class from outside that Controller class (ex. A View class wants to call a Controller method, or a Manager class wants to call a Controller method). Is calling Controller methods in this way allowed in MVC? If it's allowed, what's the proper way to do it? According to the version of MVC that I am following (there seems to be so many different versions out there), the View knows of the Model, and the Controller knows of the View. Doing it this way, I can't access the controller. Here's the best site I've found and the one describing the version of MVC I'm following: http://leepoint.net/notes-java/GUI/structure/40mvc.html. The Main Program code block really shows how this works. Thanks for any answers.

    Read the article

  • Core Data Relationship List

    - by Dylan Copeland
    I'm not sure whether or not this is the appropriate way of doing this, but I was wondering what's the best way to approach a relationship to a value in a list with Core Data? For example, say you have a 'person' entity. Each person can have a different 'hair color'. I'm trying to basically define the hair colors in my data model and allow the 'person' entity to have a relationship to their given 'hair color. Is this possible? Good idea or bad? Thanks in advance.

    Read the article

  • Create Django formset wihtout multiple queries

    - by Martin
    I need to display multiple forms (up to 10) of a model on a page. This is the code I use for to accomplish this. TheFormSet = formset_factory(SomeForm, extra=10) ... formset = TheFormSet(prefix='party') return render_to_response('template.html', { 'formset' : formset, }) The problem is, that it seems to me that Django queries the database for each of the forms in the formset, even though the data displayed in them is the same. Is this the way Formsets work or am I doing something wrong? Is there a way around it inside django or would I have to use JavaScript for a workaround?

    Read the article

  • Applescript access to last.fm app via application icon in menu bar

    - by Mark
    Hi, I want to create an Applescript to drive the last.fm player app. I'm trying to do this via last.fm application icon in the menu bar rather than using the main application menus, as this approach (I think) won't cause last.fm to switch to the foreground. The overall plan is to bind my script to a quicksilver trigger so I can stop|start|skip|love|ban|tag tracks from the keyboard. My problem is I can't find what UI element to bind the applescript to. I've used UI Browser to scan through the UI object model but it draws a blank with the last.fm icon in the menu bar. Any thoughts appreciated.

    Read the article

  • drupal what if we have designed a content type with existing fields

    - by rakeshakurathi
    i have small problem.... i have one content type say cars with various fields, say more than 30 , user can create the content types... now i would like to show only few fields in different phases,is there any possibility to do that. more explantaion:- user may enter the car model and car details in the first page and upload images in second page.(say a popup in the block) is this is possible ? i m newbie to drupal, i would like to do this kind of data updation, i though with designing a one more content type with the existing fields, can any one explain this issue... what if i design a content type car1 with same fields say(file uplaod) in car content type.

    Read the article

  • Django ORM and multiprocessing

    - by Ankur Gupta
    Hi, I am using Django ORM in my python script in a decoupled fashion i.e. it's not running in context of a normal Django Project. I am also using the multi processing module. And different process in turn are making queries. The process ran successfully for an hr and exited with this message "IOError: [Errno 32] Broken pipe" Upon futhur diagnosis and debugging this error pops up when I call save() on the model instance. I am wondering Is Django ORM Process save ? Why would this error arise else ? Cheers Ankur

    Read the article

  • VS 2010 Server Explorer Database Showing No Tables

    - by Andy
    I'm working on a .Net application that needs to read from an Oracle 10g database behind Siebel. In VS 2010 Server Explorer, I've created a connection using the OracleClient type connector with a reference to the Oracle TNS service name as the "server name." The "Test Connection" button shows that the connection is successful. However, in the Server Explorer, when I go to expand the Tables, no tables are shown. I know for a fact that there are 3000+ tables in the database (thanks Siebel). Anyone know what's happening here? I'd like to create an Entity Framework 4.0 Entity Data Model... Thanks for the help! Andy

    Read the article

  • Ruby from the command line - sticking - Windows

    - by tyndall
    I have seen this behavior on Windows with Ruby for a long time. If I install a gem sometimes the command line will just get "lost" and stop printing output until you go back to the command line and hit enter a few times. I notice this in other places too. Like starting up a Ruby on Rails console. Or generating a model with Rails. Have other people seen this? What causes this? The weird thing is this doesn't happen all the time. I have never seen this with PHP, Lua, Perl or Python from the command line. I have seen this on Vista and Windows 7 (32-bit and 64-bit). This happens on multiple machines.

    Read the article

  • Sending ExtJS datastore parameter to CI controller

    - by Davi
    Hi all, I'm new to ExtJS and I'm stuck with ExtJS datastore. I'm using ExtJS with CodeIgniter and I want to send ExtJS datastore.load() parameter to my codeigniter's controller to process some query. How can I do that? Here is my ExtJS datastore proxy: var dataProxy = new Ext.data.HttpProxy({ url: 'index.php/cStart/js_listPegawai/', method: 'POST' }); and this is my controller code: var $queryNama = ""; function js_listPegawai() { $this->load->model('MPegawai'); $Pegawai = $this->MPegawai->listPegawai($queryNama); } Thanks for any suggestions..

    Read the article

  • Postgresql - one database for everyone, or one-database per customer

    - by user337876
    I'm working on a web-based business application where each customer will need to have their own data (think basecamphq.com type model) For scalability and ease-of-upgrades, I'd prefer to have a single database where each customer gets a filtered version of the data. The problem is how to guarantee that they stay sandboxed to their own data. Trying to enforce it in code seems like a disaster waiting to happen. I know Oracle has a way to append a where clause to every query based on a login id, but does Postgresql have anything similar? If not, is there a different design pattern I could use (like creating a view of each table for each customer that filters)? Worse case scenario, what is the performance/memory overhead of having 1000 100M databases vs having a single 1Tb database? I will need to provide backup/restore functionality on a per-customer basis which is dead-simple on a single database but quite a bit trickier if they are sharing the database with other customers.

    Read the article

  • WPF Button Image only showing in last control

    - by Ryan
    Hello All! I am fairly new to WPF and am probably missing something simple here. If I have 3 controls, only the last control will show the OriginalImage that I specify. Any help would be most appreciated. Thanks Ryan Main Window <Grid> <Grid.RowDefinitions> <RowDefinition Height="200*"/> <RowDefinition Height="60" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="85" /> <ColumnDefinition Width="85" /> <ColumnDefinition Width="85" /> <ColumnDefinition Width="85" /> <ColumnDefinition Width="300" /> </Grid.ColumnDefinitions> <Grid Grid.Row="1"> <but:ListButton OriginalImage="/CustomItemsPanel;component/ListBox/Images/add.png" DisableImage="/CustomItemsPanel;component/ListBox/Images/addunselect.png" /> </Grid > <Grid Grid.Row="1" Grid.Column="1" > <but:ListButton OriginalImage="/CustomItemsPanel;component/ListBox/Images/add.png" DisableImage="/CustomItemsPanel;component/ListBox/Images/addunselect.png" /> </Grid > <Grid Grid.Row="1" Grid.Column="2" > <but:ListButton OriginalImage="/CustomItemsPanel;component/ListBox/Images/add.png" DisableImage="/CustomItemsPanel;component/ListBox/Images/addunselect.png" /> </Grid> </Grid> Control XAML <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:CustomItemsPanel.ListButton"> <LinearGradientBrush x:Key="ButtonBackground" EndPoint="0.5,1" StartPoint="0.5,0"> <LinearGradientBrush.GradientStops> <GradientStop Color="#FF0E3D70"/> <GradientStop Color="#FF001832" Offset="1"/> </LinearGradientBrush.GradientStops> </LinearGradientBrush> <LinearGradientBrush x:Key="ButtonBackgroundMouseOver" EndPoint="0.5,1" StartPoint="0.5,0"> <LinearGradientBrush.GradientStops> <GradientStop Color="#FF1E62A1" /> <GradientStop Color="#FF0A3C6D" Offset="1"/> </LinearGradientBrush.GradientStops> </LinearGradientBrush> <LinearGradientBrush x:Key="ButtonBackgroundSelected" EndPoint="0.5,1" StartPoint="0.5,0"> <LinearGradientBrush.GradientStops> <GradientStop Color="Red" /> <GradientStop Color="#FF0A2A4C" Offset="1"/> </LinearGradientBrush.GradientStops> </LinearGradientBrush> <Style x:Key="Toggle" TargetType="{x:Type Button}"> <Setter Property="Content"> <Setter.Value> <Image> <Image.Style> <Style TargetType="{x:Type Image}"> <Setter Property="Source" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:ListButton}}, Path=OriginalImage}"/> <Style.Triggers> <Trigger Property="IsEnabled" Value="False"> <Setter Property="Source" Value="{Binding Path=DisableImage, RelativeSource={RelativeSource TemplatedParent}}"/> </Trigger> </Style.Triggers> </Style> </Image.Style> </Image> </Setter.Value> </Setter> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Button}"> <Grid Cursor="Hand"> <Border Name="back" Margin="0,1,0,0" Background="{StaticResource ButtonBackground}"> <ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" x:Name="content" /> </Border> <Border BorderThickness="1" BorderBrush="#FF004F92"> <Border BorderThickness="0,0,1,0" BorderBrush="#FF101D29" /> </Border> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True" > <Setter TargetName="back" Property="Background" Value="{StaticResource ButtonBackgroundMouseOver}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> <Style TargetType="{x:Type local:ListButton}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type local:ListButton}"> <Button Style="{StaticResource Toggle}" /> </ControlTemplate> </Setter.Value> </Setter> </Style> </ResourceDictionary> Control Code Behind public class ListButton : Control { public static readonly DependencyProperty MouseOverImageProperty; public static readonly DependencyProperty OriginalImageProperty; public static readonly DependencyProperty DisableImageProperty; static ListButton() { DefaultStyleKeyProperty.OverrideMetadata(typeof(ListButton), new FrameworkPropertyMetadata(typeof(ListButton))); MouseOverImageProperty = DependencyProperty.Register("MouseOverImage", typeof(ImageSource), typeof(ListButton), new UIPropertyMetadata(null)); OriginalImageProperty = DependencyProperty.Register("OriginalImage", typeof(ImageSource), typeof(ListButton), new UIPropertyMetadata(null)); DisableImageProperty = DependencyProperty.Register("DisableImage", typeof(ImageSource), typeof(ListButton), new UIPropertyMetadata(null)); } public ImageSource MouseOverImage { get { return (ImageSource)GetValue(MouseOverImageProperty); } set { SetValue(MouseOverImageProperty, value); } } public ImageSource OriginalImage { get { return (ImageSource)GetValue(OriginalImageProperty); } set { SetValue(OriginalImageProperty, value); } } public ImageSource DisableImage { get { return (ImageSource)GetValue(DisableImageProperty); } set { SetValue(DisableImageProperty, value); } } }

    Read the article

  • Where does the ObjectDataSource cache data?

    - by Jeremy
    I'm considering using an ObjectDataSource as an intermediate between my page controls and my data access layer & object model. Traditionally I have manually created the object and populate it via a series of findcontrol statements when I need to insert/update data in the database. I'm hoping that I can use the ObjectDataSource to marshal data between my object and my controls, eliminating that manual code, as long as the ObjectDataSource doesn't come with a lot of overhead. I noticed the EnableCaching property, where does the caching occure? is it in view state?

    Read the article

  • java: Preferences API vs. Apache Commons Configuration

    - by Jason S
    I need to allow the user to store/load an arbitrary number of lists of objects (assume they are Serializable). Conceptually I want a data model like class FooBean { /* bean stuff here */ } class FooList { final private Set<FooBean> items = new HashSet<FooBean>(); public boolean add(FooBean item) { return items.add(item); } public boolean remove(FooBean item) { return items.remove(item); } public Collection<FooBean> getItems() { return Collections.unmodifiableSet(items); } } class FooStore { public FooStore() { /* something... uses Preferences or Commons Configuration */ } public FooList load(String key) { /* something... retrieves a FooList associated with the key */ } public void store(String key, FooList items) { /* something... saves a FooList under the given key */ } } Should I use the Preferences API or Commons Config? What's the advantages of each?

    Read the article

  • Retrieving cached data from existing Crystal Reports file

    - by TimS
    Is there any way to retrieve the cached data from a previously refreshed report and say, dump it to a file? Basically, I'm looking for the dataset that is being used by the report, and hand-dragging each field onto the canvas or even exporting the file doesn't quite get me where I want. I'm not particular to a specific solution, be it .NET, vbscripting or even within the program itself... I'm not overly familiar with the Crystal Report object model, nor .NET, but it seems like with a setting like "EnableSaveDataWithReport", there ought to be a straightforward way. Oh, and I'm on CR 11 Pro

    Read the article

  • Rails: creating a custom data type / creating a shorthand

    - by Shyam
    Hi, I am wondering how I could create a custom data type to use within the rake migration file. Example: if you would be creating a model, inside the migration file you can add columns. It could look like this: def self.up create_table :products do |t| t.column :name, :string t.timestamps end end I would like to know how to create something like this: t.column :name, :my_custom_data_type The reason for this to create for example a "currency" type, which is nothing more than a decimal with a precision of 8 and a scale of 2. Since I use only MySQL, the solution for this database is sufficient enough. Thank you for your feedback and comments!

    Read the article

  • How to get image capture date and video duration when uploading files using SWFUpload and Paperclip

    - by Hatem
    Hi Guys, I'm using SWFUpload and Paperclip on Rails 2.3.5 to upload images and videos. How can I store the capture date of images and duration of videos? The following works correctly in irb: irb(main):001:0> File.new('hatem.jpg').mtime => Tue Mar 09 16:56:38 +0200 2010 But when I try to use Paperclip's before_post_process: before_post_process :get_file_info def get_file_info puts File.new(self.media.to_file.path).mtime # =>Wed Apr 14 18:36:22 +0200 2010 end I get the current date instead of the capture date. How can I fix this? Also, how can I get the video duration and store it with the model? Thank you.

    Read the article

  • 'NoneType' object has no attribute 'day'

    - by Asinox
    Hi guy, i dont know where is my error, but Django 1.2.1 is give this error: 'NoneType' object has no attribute 'day' when i try to save form from the Administrator Area models.py from django.db import models from django.contrib.auth.models import User class Editorial(models.Model): titulo = models.CharField(max_length=250,help_text='Titulo del editorial') editorial = models.TextField(help_text='Editorial') slug = models.SlugField(unique_for_date='pub_date') autor = models.ForeignKey(User) pub_date = models.DateTimeField(auto_now_add=True) activa = models.BooleanField(verbose_name="Activa") enable_comments = models.BooleanField(verbose_name="Aceptar Comentarios",default=False) editorial_html = models.TextField(editable=False,blank=True) def __unicode__(self): return unicode(self.titulo) def get_absolute_url(self): return "/editorial/%s/%s/" % (self.pub_date.strftime("%Y/%b/%d").lower(), self.slug) class Meta: ordering=['-pub_date'] verbose_name_plural ='Editoriales' def save(self,force_insert=False, force_update=False): from markdown import markdown if self.editorial: self.editorial_html = markdown(self.editorial) super(Editorial,self).save(force_insert,force_update) i dont know why this error, thanks guys sorry with my English

    Read the article

  • DefaultSchedulerService in ASP.NET application

    - by Samir P
    Hi, My project has a requirement to implement look-ahead caching i.e. triggering another request on invokation of a specific request. The following details in short the implementation - HttpModule parses the SOAPRequest and matches entry in a configuration file for look-ahead candidate. If the request matches, it prepares the Parameters dictionary and starts appropriate workflow. Single workflow runtime is used across all requests is ensured through initializing the runtime instance at Application_Start event and stored in Application Dictionary. Using persistence service and DefaultScheduler service. We can't implement windows service model, as current requirement mandates passing the SOAPRequest parameters as arguments. ManualSchedulerService is not in contention due to synchronous nature of it's actual behaviour. Still the performance is pretty bad and product team is not happy. Can anybody suggest me better solution? Thanks, Samir

    Read the article

  • What kind of knowledge you need to invent a new programming language?

    - by systempuntoout
    I just finished to read "coders at works", a brilliant book by Peter Seibel with 15 interviews to some of the most interesting computer programmers alive today. Well, many of the interviewees have (co)invented\implemented a new programming language. For example: * Joe Armstrong: Inventor of Erlang * L. Peter Deutsch: implementer of Smalltalk-80 * Brendan Eich: Inventor of JavaScript * Dan Ingalls: Smalltalk implementor and designer * Simon Peyton Jones: Coinventor of Haskell * Guy Steele: Coinventor of Scheme Is out of any doubt that their minds have something special and unreachable, and i'm not crazy to think i will ever able to create a new language; i'm just interested in this topic. So, imagine a funny\grotesque scenario where your crazy boss one day will come to your desk to say "i want a new programming language with my name on it..take the time you need and do it", what will you start to study? What kind of knowledge do you need to model, design and implement a brand new programming language?

    Read the article

  • Creating WCF DataContracts dynamically from code

    - by Fredrik Tonn
    Given the fact that I have a fully dynamic object model, that is, I have no concrete classes defined anywhere in code, but I still want to be able to create WCF DataContracts for them so I can use them in operations. How can I achieve this? My concrete class "Entity" implements ICustomTypeDescriptor which is used to present the various properties to the outside world, but my expeimentation with WCF suggests that WCF does not care about ICustomTypeDescriptor. Is this correct or have I missed something? Is this possible? It cannot be so that the only way to create a DataContract is to actually have a concrete harcoded class, can it?

    Read the article

  • Need Database Help - A second opinion - thank you

    - by user287745
    i have designed an er model and then normalized it till the BCNF and converted it into tables using vs08. my problem is i do not know from where to get the normalized database checked to see if it has no mistakes in normalization- can not be further normalized. please do not give answers such as- ask a friend- ask your professor- do not have these resources available- it is very very hard and really time consuming waiting for the relevant person to be available. so are there any sites from where i can ask help from other designers- people like you to check the normalized database? please note:- it should be free, sorry for accept rate, was not aware of accepting the answers, all the help is appreciated thank you

    Read the article

< Previous Page | 495 496 497 498 499 500 501 502 503 504 505 506  | Next Page >