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  • Asp.Net MVC does automatic model validation for DateTime but no others

    - by MattSlay
    I'm using MVC 2 with some Models from a LinqToSql project that I built. I see that when I post back to a Controller Action after editing a form that has a DateTime field from the Model, the MVC Html.ValidationMessageFor() helper will nicely display an error beside the Date text box. This seems to happen automatically when the you test ModelState.IsValid() in the Controller Action, as if the MVC model binding automatically knows that the DateTime field cannot be empty. My question is... I have some other string fields in these LinqToSql generated classes that are Not-Nullable (marked as Not Nullable in Sql Server which passes thourgh to the LinqToSql generated classes), so why doesn't Mr. MVC pick up on those as well and display a "Required" message in the ValidationMessageFor() placeholders I have added for those fields? Sure, I have successfully added the MetadataType(typeof) buddy classes to cover these Non-nullable string fields, but it sure does seem redundant to add all this metadata in buddy classes when the LinqToSql generated classes already contain enough info that MVC could sniff out. It MVC validation works with DateTime automatically, why not these Not-nullable fields too?

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  • Bind list from FormView to model in ASP.net webforms

    - by Monty
    For a large fillin form I use the asp.net FormView for the magic databinding to my model. In this model I've a property called Rides (shown below), which exposes a list, which I obviously not want to be replaced entirely. So I made it readonly. However, this way I can't use the databinding features anymore. Is there a common solution for this problem? public IList<Ride> Rides { get { if (this._rides == null) { this._rides = new List<Ride>(); } return this._rides; } }

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  • Eclipselink read complex object model in an ordered way

    - by Raven
    Hi, I need to read a complex model in an ordered way with eclipselink. The order is mandantory because it is a huge database and I want to have an output of a small portion of the database in a jface tableview. Trying to reorder it in the loading/quering thread takes too long and ordering it in the LabelProvider blocks the UI thread too much time, so I thought if Eclipselink could be used that way, that the database will order it, it might give me the performance I need. Unfortunately the object model can not be changed :-( The model is something like: @SuppressWarnings("serial") @Entity public class Thing implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; @OneToMany(cascade=CascadeType.ALL) @PrivateOwned private List<Property> properties = new ArrayList<Property>(); ... // getter and setter following here } public class Property implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; @OneToOne private Item item; private String value; ... // getter and setter following here } public class Item implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; .... // getter and setter following here } // Code end In the table view the y-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Thing m ORDER BY m.name ASC"); using the "name" attribute from the Thing objects as label. In the table view the x-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Item m ORDER BY m.name ASC"); using the "name" attribute from the Item objects as label. Each cell has the value Things.getProperties().get[x].getValue() Unfortunately the list "properties" is not ordered, so the combination of cell value and x-axis column number (x) is not necessarily correct. Therefore I need to order the list "properties" in the same way as I ordered the labeling of the x-axis. And exactly this is the thing I dont know how it is done. So querying for the Thing objects should return the list "properties" "ORDER BY name ASC" but of the "Item"s objects. My ideas are something like having a query with two JOINs. Joing Things with Property and with Item but somehow I was unable to get it to work yet. Thank you for your help and your ideas to solve this riddle.

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  • Fetched Property in XCode Data Model Editor for minimum value

    - by wal
    How do I add a Fetched Property in XCode's Data Model Editor for minimum value of one attribute?? My model: Item (name, note, storedItem) StoredItem (price, item) Item 1 ---> N StoredITem (1->N Relationship) I want that Item has a fetched property named minPrice and its value is the minimum value setted for price in the storedItems. Example: Item1 (banana, storedItem1 ... storedItem4, 10) StoredItem1 (10,item1) StoredItem2 (15,item1) StoredItem3 (30,item1) StoredItem4 (54,item1) What do I put in Destination?? StoredItem? And what do I put in Expression??

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  • How to Load a VRML model on PaperVision3d?

    - by DomingoSL
    Hello, im very new at papervision3d, i know in order to display a .DAE model i use this import flash.events.Event; import org.papervision3d.objects.parsers.DAE; [SWF(width=640, height=480, backgroundColor=0x808080, frameRate=30)] public class Earth extends PV3DARApp { private var _earth:DAE; public function Earth() { addEventListener(Event.INIT, _onInit); init('Data/camera_para.dat', 'Data/flarlogo.pat'); } private function _onInit(e:Event):void { _earth = new DAE(); _earth.load('model/amorfo.dae'); But how can i do in order to use VRML models (.WRL). Thanks.

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  • Entity Framework Model with inheritance and RIA Services

    - by TimothyP
    Hi, We have an entity framework model with has some inheritance in it. The following example is not the actuall model, but just to make my point... Let's say Base class: Person Child classes: Employee, Customer The database has been generated, the DomainService has been created and we can get to the data: lstCustomers.ItemsSource = context.Persons; EntityQuery<Person> query = context.GetPeopleQuery().Take(4); context.Load(query); But how can I modify the query to only return Customers ?

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  • SubWebFolder and mutliple bin folders with Website model?

    - by OutOFTouch
    Hi, I am looking for some advice on how what is the best approach to subweb folders and having mutliple bin folders in the WebSite Project model. For adding new pages at a later stage without recompiling the core files of a website and without building a full fledged Plug-in framework api. I am aware of being able to drop in the compiled dlls into the main bin folder and to just copy over the new page files to a sub folder but I am looking for a more organized file/folder approach. Here is the how it was done with WAP: Moving the Code-Behind Assemblies/DLLs to a different folder than /BIN with ASP.NET 1.1 Multiple /bin folders in ASP.NET I should also mention that I see that I can still do it the old way with the website project model by making the adjustment to the config section mentioned here but I was wondering if that has any side affects. AssemblyBinding in Web Config and XMLNS

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  • How do I render 3d model into directshow virtual camera output

    - by Mr Bell
    I want to provide a virtual webcam via DirectShow that will use the video feed from an existing camera running some tracking software against it to find the users face and then overlay a 3d model oriented just that it appears to move the users face. I am using a third party api to do the face tracking and thats working great. I get position and rotation data from that api. My question is whats the best way to render the 3d model and get into the video feed and out to direct show? I am using c++ on windows xp.

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  • Ruby on Rails: Model.all.each vs find_by_sql("SELECT * FROM model").each ?

    - by B_
    I'm fairly new to RoR. In my controller, I'm iterating over every tuple in the database. For every table, for every column I used to call SomeOtherModel.find_by_sql("SELECT column FROM model").each {|x| #etc } which worked fine enough. When I later changed this to Model.all(:select => "column").each {|x| #etc } the loop starts out at roughly the same speed but quickly slows down to something like 100 times slower than the the find_by_sql command. These calls should be identical so I really don't know what's happening. I know these calls are not the most efficient but this is just an intermediate step and I will optimize it more once this works correctly. Thanks!

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  • asp.net mvc - bootstrapping object via model binder

    - by csetzkorn
    Hi, I have a domain object Thing which can contain several Categories. So I have implemented my HTML helper to create a checkbox group of all possible Categories. I have no problem receiving: [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(Thing Thing, List<string> Categories) However I am wondering whether I could use a custom Model binder to use just this: [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(Thing Thing) So basically I am looking for a way to use the model binder to bootstrap the object tree/graph. Any pointers appreciated. Thanks. Christian

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  • Help a Python newbie with a Django model inheritance problem

    - by Joshmaker
    I'm working on my first real Django project after years of PHP programming, and I am running into a problem with my models. First, I noticed that I was copying and pasting code between the models, and being a diligent OO programmer I decided to make a parent class that the other models could inherit from: class Common(model.Model): self.name = models.CharField(max_length=255) date_created = models.DateTimeField(auto_now_add=True) date_modified = models.DateTimeField(auto_now=True) def __unicode__(self): return self.name class Meta: abstract=True So far so good. Now all my other models extend "Common" and have names and dates like I want. However, I have a class for "Categories" were the name has to be unique. I assume there should be a relatively simple way for me to access the name attribute from Common and make it unique. However, the different methods I have tried to use have all failed. For example: class Category(Common): def __init__(self, *args, **kwargs): self.name.unique=True Spits up the error "Caught an exception while rendering: 'Category' object has no attribute 'name' Can someone point me in the right direction?

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  • 3D Character/Model Creator

    - by Click Ok
    I'm in a project to create a 3d game using XNA/C#, and the game will use a lot of 3d characters. Looking at the current 3d games, in some they create near to hundreds of characters, what lead me to think that there are some good 3d character/model creator. To narrow the sample, the game will have characters like the game "Grand Chase". There are some good (and easy) character model creator for to use in XNA development? Free is better, of course, but I will get payed versions too. EDIT: Another question is about the movements of the characters. The movements like walk, jump, sit, etc are "created" by the "character creator tool" or by the game?

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  • Modify on-the-fly verbose_name in a model field on django admin

    - by PerroVerd
    Hi I have this sample model working with the admin class Author(models.Model): name = models.CharField(_('Text in here'), max_length=100) with verbose_name set as ugettext_lazy 'Text in here', but sometimes, depending on the site_id i want to present a diferent verbose name, so I modified the init in this way def __init__(self, *args, **kwargs): super(Author, self).__init__(*args, **kwargs) #some logic in here self._meta.get_field('name').verbose_name = _('Other text') It works, displaying the 'Other text' instead the 'Text in here'... except for the very first time the author/add view is used. ¿Is it the right way to do it? ¿How can i fix the first time problem? Thanks in advance

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  • How to setup default attributes in a ruby model

    - by webdestroya
    I have a model User and when I create one, I want to pragmatically setup some API keys and what not, specifically: @user.apikey = Digest::MD5.hexdigest(BCrypt::Password.create("jibberish").to_s) I want to be able to run User.create!(:email=>"[email protected]") and have it create a user with a randomly generated API key, and secret. I currently am doing this in the controller, but when I tried to add a default user to the seeds.rb file, I am getting an SQL error (saying my apikey is null). I tried overriding the save definition, but that seemed to cause problems when I updated the model, because it would override the values. I tried overriding the initialize definition, but that is returning a nil:NilClass and breaking things. Is there a better way to do this?

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  • form_tag for search model

    - by kip
    I have a search controller which is to be used to search over a separate model called house. The house model has a restful setup. I want the results listed on the index action of the search controller. The form_tag url is giving me some problems. What is the correct path for this? Below is the search form (search/form): <% form_tag index_search do -%> <p> <%= collection_select(:house, :category_id, Category.all, :id, :name) %> </p> <p> <strong>price</strong><br /> <%= text_field_tag :min_price, params[:min_price], :size => 3 %> <%= text_field_tag :max_price, params[:max_price], :size => 4 %>

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  • Zend Framework: Flash Messenger, add a message from the model

    - by Dan
    Any idea on how best to add a message to flash messenger from the model? As FlashMessenger is an action helper, this seems not to be possible, so the obvious solution is to create an internal message object in the model, and return that to the controller from where you can use addMessage(). But if you want to return something else as well, this falls down. Another idea is an additional session namespace for these internal messages, which is then merged in with the Flash Messenger namespace messages at output time? Anyone have any thoughts or experience on this? Cheers.

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  • Converting Asynchronous Programming Model (Begin/End methods) into event-based asynchronous model?

    - by David
    Let's say I have code that uses the Asynchronous Programming Model, i.e. it provides the following methods as a group which can be used synchronously or asynchronously: public MethodResult Operation(<method params>); public IAsyncResult BeginOperation(<method params>, AsyncCallback callback, object state); public MethodResult EndOperation(IAsyncResult ar); What I want to do is wrap this code with an additional layer that will transform it into the event-driven asynchronous model, like so: public void OperationAsync(<method params>); public event OperationCompletedEventHandler OperationCompleted; public delegate void OperationCompletedEventHandler(object sender, OperationCompletedEventArgs e); Does anyone have any guidance (or links to such guidance) on how to accomplish this?

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  • Django make model field name a link

    - by Daniel Garcia
    what Im looking to do is to have a link on the name of a field of a model. So when im filling the form using the admin interface i can access some information. I know this doesn't work but shows what i want to do class A(models.Model): item_type = models.CharField(max_length=100, choices=ITEMTYPE_CHOICES, verbose_name="<a href='http://www.quackit.com/html/codes'>Item Type</a>") Other option would be to put a description next to the field. Im not even sure where to start from.

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  • Eclipselink read complex oject model in an ordered way

    - by Raven
    Hi, I need to read a complex model in an ordered way with eclipselink. The order is mandantory because it is a huge database and I want to have an output of a small portion of the database in a jface tableview. Trying to reorder it in the loading/quering thread takes too long and ordering it in the LabelProvider blocks the UI thread too much time, so I thought if Eclipselink could be used that way, that the database will order it, it might give me the performance I need. Unfortunately the object model can not be changed :-( The model is something like: @SuppressWarnings("serial") @Entity public class Thing implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; @OneToMany(cascade=CascadeType.ALL) @PrivateOwned private List<Property> properties = new ArrayList<Property>(); ... // getter and setter following here } public class Property implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; @OneToOne private Item item; private String value; ... // getter and setter following here } public class Item implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; .... // getter and setter following here } // Code end In the table view the y-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Thing m ORDER BY m.name ASC"); using the "name" attribute from the Thing objects as label. In the table view the x-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Item m ORDER BY m.name ASC"); using the "name" attribute from the Item objects as label. Each cell has the value Things.getProperties().get[x].getValue() Unfortunately the list "properties" is not ordered, so the combination of cell value and x-axis column number (x) is not necessarily correct. Therefore I need to order the list "properties" in the same way as I ordered the labeling of the x-axis. And exactly this is the thing I dont know how it is done. So querying for the Thing objects should return the list "properties" "ORDER BY name ASC" but of the "Item"s objects. My ideas are something like having a query with two JOINs. Joing Things with Property and with Item but somehow I was unable to get it to work yet. Thank you for your help and your ideas to solve this riddle.

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  • Disabling model's after_find only when called from certain controllers

    - by Lynn C
    I have an after_find callback in a model, but I need to disable it in a particular controller action e.g. def index @people = People.find(:all) # do something here to disable after_find()? end def show @people = People.find(:all) # after_find() should still be called here! end What is the best way to do it? Can I pass something in to .find to disable all/particular callbacks? Can I somehow get the controller name in the model and not execute the callback based on the controller name (I don't like this)..? Help!

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  • VS2010 MVC and Entity Framework Model in Separate Project

    - by mdm
    Hi, I am trying to use an Entity Framework Model (in separate project) into an asp.net 4 MVC project (VS2010, C#) If I create the EF inside the MVC project I have no problems. I think I am missing some step. things done: 1. added reference to the EF class project 2. added connection string in MVC web.config 3. added reference to System.Data.Entity in both web.config and project references Now i can use the model only if I copy the .edmx file to the Models folder, but in this way the EF project is not external anymore. What am I missing? Thank you in advance.

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  • Getting the Action during model binding

    - by Kieron
    Hi, Is there a way of getting the Action, and reading any attributes, during the model binding phase? The scenario is this: I've got a default model binder set-up for a certain data-type, but depending on how it's being used (which is controlled via an attribute on the action) I need to ignore a set of data. I can use the RouteData on the controller context and see the action name, which I can use to go get the data, but wondered if that information is already available. Additionally, if the action in question is an asynchronous one, they'd be more processing involved in looking it up...

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  • Applying Domain Model on top of Linq2Sql entities

    - by Thomas
    I am trying to practice the model first approach and I am putting together a domain model. My requirement is pretty simple: UserSession can have multiple ShoppingCartItems. I should start off by saying that I am going to apply the domain model interfaces to Linq2Sql generated entities (using partial classes). My requirement translates into three database tables (UserSession, Product, ShoppingCartItem where ProductId and UserSessionId are foreign keys in the ShoppingCartItem table). Linq2Sql generates these entities for me. I know I shouldn't even be dealing with the database at this point but I think it is important to mention. The aggregate root is UserSession as a ShoppingCartItem can not exist without a UserSession but I am unclear on the rest. What about Product? It is defiently an entity but should it be associated to ShoppingCartItem? Here are a few suggestion (they might all be incorrect implementations): public interface IUserSession { public Guid Id { get; set; } public IList<IShoppingCartItem> ShoppingCartItems{ get; set; } } public interface IShoppingCartItem { public Guid UserSessionId { get; set; } public int ProductId { get; set; } } Another one would be: public interface IUserSession { public Guid Id { get; set; } public IList<IShoppingCartItem> ShoppingCartItems{ get; set; } } public interface IShoppingCartItem { public Guid UserSessionId { get; set; } public IProduct Product { get; set; } } A third one is: public interface IUserSession { public Guid Id { get; set; } public IList<IShoppingCartItemColletion> ShoppingCartItems{ get; set; } } public interface IShoppingCartItemColletion { public IUserSession UserSession { get; set; } public IProduct Product { get; set; } } public interface IProduct { public int ProductId { get; set; } } I have a feeling my mind is too tightly coupled with database models and tables which is making this hard to grasp. Anyone care to decouple?

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