MVC2 Development Without Doing Enough Research About The EF4?
Sep 30, 2010
have starting doing a lot of MVC2 development without doing enough research about the EF4. This lead me to a path which I am not happy with. The way that I laid out my project is that my Models are all ADO.NET Entity Framework Models. Each model is representing database able. Today, I attempted to do a LINQ join on entities which belong to two different data contexts. This resulted in a nasty LINQ error telling me that it can't be done. I hate the fact that the only viable way to use the EF seems to create large models.
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Aug 27, 2010
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Oct 20, 2010
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Oct 8, 2010
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Mar 2, 2010
[HttpPost]
public ActionResult Edit(int id, FormCollection fc)
{
Movie movie =
(
from m in _ctx.Movie.Include("MovieActors")
where m.MovieID == id select m
).First();
MovieActorViewModel movieActor = new MovieActorViewModel(movie);
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{
_ctx.ApplyPropertyChanges(movieActor.Movie.EntityKey.EntitySetName,
movieActor.Movie);
_ctx.SaveChanges();
}
return View(movieActor);
}
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{
public Movie Movie { get; set; }
public Actor Actor { get; set; }
public PublisherDealViewModel(Movie movie)
{
this.Movie = movie;
this.Actor =
(
from a in this.Movie.Actors
where a.ActorID == 1 select a
).First();
}
}
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<% using (Html.BeginForm()) {%>
Movie Title: <%= Html.TextBoxFor(model=>model.Movie.Title) %><br/>
Actor Name: <%= Html.TextBoxFor(model=>model.Actor.Name) %>
<% } %>
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Feb 8, 2011
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Apr 29, 2010
I've spent the majority of the past week knee deep in the new templating functionality baked into MVC2. I had a hard time trying to get a DropDownList template working. The biggest problem I've been working to solve is how to get the source data for the drop down list to the template. I saw a lot of examples where you can put the source data in the ViewData dictionary (ViewData["DropDownSourceValuesKey"]) then retrieve them in the template itself (var sourceValues = ViewData["DropDownSourceValuesKey"];) This works, but I did not like having a silly string as the lynch pin for making this work.
[code]...
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Mar 25, 2010
I am trying to figure out how to get the DisplayAttribute in my MVC 2 ViewModel to work with the Html.LabelFor() helper.
Neither
public class TestModel
{
[Display(ResourceType = typeof(Localization.Labels))][code]...seem to work. Localizing the Required Attribute works as expected:
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Nov 16, 2010
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Jun 28, 2010
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Mar 3, 2011
I have this code in my view page.
<td>
Mandate Name:
</td>
<td>
<%= Html.TextBox("MandateName")%>
</td>
I wrote MVC2 Validation for this name.
something like this.
//[Validator(typeof(MandateValidator))]
[MetadataType(typeof(Mandate_Metadata))]
public partial class Mandate {
public class Mandate_Metadata
{.........
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Apr 24, 2010
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Apr 24, 2010
Again a question about RadioButtons/ RadioButtonList
I've the following Model:
public class SkillLevelModel
{
public long? Id { get; set; }
public int? SelectedLevel { get; set;}
}
I've the following Controller:
public class SkillController : BaseController
{
public ActionResult Index()
{
var skills = new List<SkillLevelModel>();
for (int i = 0; i < 10; i++)
skills.Add(new SkillLevelModel() { Id = i, SelectedLevel = new Random().Next(0,5) });
return View(skills);
}
I've the following code in the View:
<% foreach (var item in Model) { %>
<tr>
<td style="width: 30px" align="center">
<%= Html.Encode(item.Id) %>
</td>
<td>
<% Html.RenderPartial("UCSkillLevel", item); %>
</td>
</tr>
<% } %>
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<% for (int i = 0; i <= 5; i++) { %>
<td align="center">
<%= Html.RadioButton("SelectedLevel", i, new { id = Model.Id + "_" + i })%>
</td>
<% } %>
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Oct 24, 2010
I am trying to use Domain Driven Development (DDD) for my new ASP.NET MVC2 project with Entity Framework 4. After doing some research I came up with the following layer conventions with each layer in its own class project:
[code]...
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Jul 26, 2010
I have combined a MVC2 project with a WebForms project....however I found that the only way to do this was to create a base MVC2 project and then start dropping the WebForms project into the MVC2 project.If I do the reverse .....start with a WebForms project I cannot get the MVC2 functionality to work. For example ....if I right-click and attempt to Add an item.....I do not see the option to Add a MVC2 Area.
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Jan 25, 2010
If I decorate my model with a regular expression + localized string resource, and the ErrorMessageResourceName does not resolve to something on the object, the following things happen:
The regular expression is ignored altogether from a validation perspectiveNo error messages are raised in the MVC application.I would love it if the framework floated an exception in this instance because exclusion of this rule could have far reaching implications.The following is a modification to the ChangePasswordModel.NewPassword property in the stock MVC 2 RC1 project that exhibits the behavior. Note that while the MyResources does exist in my project, the EMResourceName does not exist on it.
[Code]....
[RegularExpression(@"^(?=.*d)(?=.*[a-z])(?=.*[A-Z]).{4,8}$", ErrorMessageResourceType = typeof(MyResources), ErrorMessageResourceName = "InvalidPasswordMessage2")]
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Mar 31, 2010
It looks like the final release for ASP.NET MVC 2 has been already around for 2 weeks. Unfortunately, I can't find documentation that's intended for MVC 2 exclusively. I've checked Amazon.com (no book yet on MVC2), ScottGu's Blog (only 2 short posts), ASP.NET/MVC website (they've only posted what are alreadi in the ScottGu's blog).
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Mar 1, 2011
how can i connect mySql to my mvc application
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Jan 7, 2011
I'm making an MVC2 app to manage billing schemes. These billing schemes can be of various types, e.g. daily, weekly, monthly, etc. and all types have their specific properties. My class structure looks like this:
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public class BillingSchemeMonthly : BillingScheme
{
public string SpecificMonths;
}
//etc. for other scheme types
I retrieve a billing scheme through the base class using the billing scheme ID, and it gives me an object of the correct type. The property SpecificMonths maps to a database varchar field that contains a ;-separated string of month numbers. I want to split this to an array so I can create a list of checkboxes and I'd preferably do this with a facade property in a viewmodel. I could do it right inside the view but that seems to go against the MVC pattern.
The problem is I can only create this viewmodel specifically for a BillingSchemeMonthly, and I can't cast a BillingSchemeMonthly to a BillingSchemeMonthlyViewModel. I'd rather not implement a clone method in the viewmodel since the entire billing scheme is quite large and the number of properties may grow.
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Mar 7, 2010
Table Product
Product Id
Product Name
Table ProductSupplier
ProductSupplierId
ProductId
SupplierId
Table Supplier
SupplierId
SupplierName
I have the above 3 tables in my database, ProductSupplier is the lookup table. Each Product can have many suppliers. I am using Entity Framework. Using Web Forms it was fairly easy to display a Product on a web page and bind a repeater with the suppliers information. Also, with Web Forms it was easy to Add new Product and suppliers, the linkage seemed easy.
How do you do this sort of functionality in MVC? In the Create View below, I want to be able to Add the Supplier as well. Is there a better approach that I might be missing here? This is how I did it with Web Forms. Beyond the code below I am totally lost. I can show data in a list and also display the Suppliers for each Product, but how do I Add and Edit. Should I break it into different views? With Web Forms I could do it all in one page.
namespace MyProject.Mvc.Models
{
[MetadataType(typeof(ProductMetaData))]
public partial class Product
{
public Product()
{
// Initialize Product
this.CreateDate = System.DateTime.Now;
}
}
public class ProductMetaData
{
[Required(ErrorMessage = "Product name is required")]
[StringLength(50, ErrorMessage = "Product name must be under 50 characters")]
public object ProductName { get; set; }
[Required(ErrorMessage = "Description is required")]
public object Description { get; set; }
}
public class ProductFormViewModel
{
public Product Product { get; private set; }
public IEnumerable<ProductSupplier> ProductSupplier { get; private set; }
public ProductFormViewModel()
{
Product = new Product();
}
public ProductFormViewModel(Product product)
{
Product = product;
ProductSupplier = product.ProductSupplier;
}
}
}
ProductRepository
public Product GetProduct(int id)
{
var p = db.Product.FirstOrDefault(por => por.ProductId == id);
p.ProductSupplier.Attach(p.ProductSupplier.CreateSourceQuery().Include("Product").ToList());
return p;
}
Product Create View
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master"
Inherits="System.Web.Mvc.ViewPage<MyProject.Mvc.Models.ProductFormViewModel>" %>
<%= Html.ValidationSummary("Please correct the errors and try again.") %>
<% using (Html.BeginForm()) {%>
<fieldset>
<legend>Fields</legend>
<div class="editor-label">
<%= Html.LabelFor(model => model.Product.ProductId) %>
</div>
<div class="editor-field">
<%= Html.TextBoxFor(model => model.Product.ProductId) %>
<%= Html.ValidationMessageFor(model => model.Product.ProductId) %>
</div>
<div class="editor-label">
<%= Html.LabelFor(model => model.Product.ProductName) %>
</div>
<div class="editor-field">
<%= Html.TextBoxFor(model => model.Product.ProductName) %>
<%= Html.ValidationMessageFor(model => model.Product.ProductName) %>
</div>
<div class="editor-label">
<%= Html.LabelFor(model => model.Product.Description) %>
</div>
<div class="editor-field">
<%= Html.TextBoxFor(model => model.Product.Description) %>
<%= Html.ValidationMessageFor(model => model.Product.Description) %>
</div>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
<% } %>
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Sep 20, 2010
I want to have two partial views, one for SEARCH and one for SEARCHRESULTS. I want to update SEARCHRESULTS when the "Search" Button is clicked on the SEARCH partial view form. SEARCHRESULTS needs to have the form data fed to it from the SEARCH partial view. I'm not totally sure how to go about this. Can I update the SEARCHRESULTS partial view from my SEARCH partial view's Controller action?
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Nov 23, 2010
Possible Duplicate: How to create file and return it via FileResult in ASP.NET MVC?
ASP.NET MVC2: How to return a file from a controller? I want to do this so the user can download the file from server.
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Aug 20, 2010
This works fine: Controller.cs
ViewData["MyText"] = "Hello World";
Index.aspx
<%: Html.Label(ViewData["MyText"].ToString()) %>
But the complete text is not displayed when I add just a dot "." to "Hello World". I thought "<%:" takes care for this but it seams that this is not true... How to solve this? How to mask the dot? Changing "." with "%2E" doesnt work ;-(
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