MVC :: RenderAction() Ignores Model Validation, RenderAction() Does Not?
Jun 4, 2010
I'm using MVC 2 and MVC Futures 2.0.50217.0.
I started with a view which repeatedly calls RenderAction(...) to include some external content implemented by another controller in my application. This is from the containing view:
[Code]....
The subModel objects are instances of the model for the MyController.MyAction view which has some Data Annotations validation attributes upon it. MyController.MyAction checks the model state is valid before it renders its view and chooses a view appropriately. This works fine.
However, if I use the MVC Futures' strongly typed helper to call RenderAction like so:
[Code]....
...then the validation is not performed. Or at least, the model state does not indicate that the model is invalid.
I read many posts about outputcaching element in asp .net MVC, but i have one question.My architecture is :1 master page, 1 page (especially news information), and a few other controls like LogOnUser / Fixed status bar etc...I want to have my news cached cause there are three query to entities, but i need too the title for SEO of my master page (title is included in a contentplaceholder in master).I tried to use renderaction outputcache but it is not possible to retrieve the title from the renderaction. Have you any idea about this problem ?Maybe it's preferable to use a general outputcache and use a substitute from dynamic data, but i don't know if it's a best practice or not.
I am trying to understand the difference between a RenderPartial and RenderAction. I guess that RenderPartial is like a UserControl and RenderAction is like a server-side include.
We are using renderaction provided by MVC futures. We've noticed that HttpExceptions in child action methods are not propagated to the parent action. Even though a fragment has failed, we still see the parent request resulting in a 200, and this throws our error handling for a toss.
I am using MVC 2 and am having problems getting the OutputCache to work. My ASP.NET website has Several Views and a View Master Page. On my View Master Page I have a Menu on the left hand side displaying navigation links (implemented using JQuery).
I have implemented the Menu as a PartialView and I call this PartialView from my MasterPage using Html.RenderAction. This all works fine, my controller fetches the data from the database and the PartialView is populated.
The problem is I want to cache the Menu data since it's consistent on all pages. Yet when I add the OutputCache parameter to my Action it has no effect.
@{Html.RenderAction("Detail", "Help", new { pageName = "press" });} But instead i'd like to use a lambda expression to get away from the string bits. I tried using the following (which is the nearest approximation i could figure based on my limited knowledge of the engine):
@{Html.RenderAction<HelpController>(x => x.Detail("press"));} But i get the following error:
The non-generic method 'System.Web.Mvc.Html.ChildActionExtensions.RenderAction(System.Web.Mvc.HtmlHelper, string, string, System.Web.Routing.RouteValueDictionary)' cannot be used with type arguments
However, i'm reading in the Apress MVC 2.0 book that it is in fact declared as a method that takes type arguments. Am i missing an assembly reference, or has it not been included in the MVC 3.0 Preview 1 build?
in my masterpage of my asp.net mvc 2 app. This method returns the version of the application.
i also have this code in my controller:
class GenericController : BaseController { [ChildActionOnly] public string Version() { try { string assemblyFile = Assembly.GetCallingAssembly().FullName; FileInfo fi = new FileInfo(assemblyFile); string version = fi.LastWriteTime.Year.ToString( ) + fi.LastWriteTime.Month.ToString() + fi.LastWriteTime.Day.ToString(); return version; } catch (Exception e) { return "1.0"; } } }
Now i get this error: Execution of the child request failed. Please examine the InnerException for more information.
and the innerexcpetion is: {"The controller for path '/Account/LogOn' was not found or does not implement IController."}
What i was thinking is that maybe the code can't execute because the user is not logged on yet, and tries to redirect to the logon method etc.
So the first thing i was thinking is to grant access in the web.config (like i do with the directory that has the css and images in it, it should also be accessable when you're not logged on:
im extending the htmlhelper. but it i cannot call the renderaction of it.
using System.Text; using System.Web.Mvc; using System.Web.Mvc.Html; public static class ViewHelpers { public static string Text(this HtmlHelper htmlHelper, string name, object value, bool isEditMode) { htmlHelper.RenderAction(...) //cannot be called } }
I am using Actionfilter to globally filter our HTML comments from all action methods and in all controllers. It simply overrides OnActionExecuting and runs the response through a regex to filter the comments. I am also using RenderAction to render some more complicated widgets in my website. There is no caching in place, I just use Renderactionto keep my code as simple possible.
When calling RenderAction from within a Razor View, I get an error message telling me that "Filtering is not allowed". The problem does not occur when calling RenderAction from within an aspx View. It only occurs when calling RenderAction from within a Razor View. In case it matters: the view being rendered is implemented with ASPX. Is this a bug or a known limitation?
I am working in an environment with many teams who are responsible for specific content on pages. Each team is sharing specific information (common class libraries, and master pages) that each are going deliver different types of content.Is it possible for an MVC application to do something similar to RenderPartial and pass a model to another MVC application Controller/Action to return content?
So the code for this might look like: (http://www.mydomain.com/Home/Index)
I am building a dashboard where I am iterating through a list of controls to render, and I need to initiate a general callback both after each control and after they are all completed. I was curious what the best way to handle this is. I can get the control specific callback fired off by placing myUserControlCallback(); in the user control itself. I'm just not sure how to run something like allControlsRendered().
After rendering a view on a Post, a call to RenderAction inside the view will call for the Post method. Is there any way to specify I want to call the Get method instead of the Post?
I'm struggling with renderaction, the problem is that it calls the wrong action method on my controller.On my "Users" controller there are two action methods called edit, one for get and one for post requests:
public virtual ActionResult Edit(int id) { //return a view for editing the user
I have a master page into which I'm inserting a 'Search' partial view, which I've called 'pSearch.ascx'.
I need to pass in a model to make some data available to pSearch, so I am using RenderAction from the site.master page, which then should call a [ClientActionOnly] Action on the 'Home' controller, called SearchPartial(), which in turn returns the pSearch view.
Code from site.master: <% Html.RenderAction("SearchPartial", "Home"); %>
Code from HomeController.cs: (the method is virtual because I'm using T4MVC in the project)
In my Site.Master View, I have the following line:
[Code]....
If I don't include the string identifying the Controller to use, I get an error stating that the PrimaryNavigation method couldn't be found in the Home Controller. Since the Site.Master View is in the Shared Views folder, I would have thought that the Shared Controller would have been used.
I get an HttpException (details below) after installing Visual Studio 2010 Pro RTM in an application developed using Visual Studio 2010 RC. The platform used was ASP.NET MVC2 RTW (already under VS10 RC).
I first uninstalled all RC software and even ASP.NET MVC 2, and then did a "clean" install of VS10 RTM. The ASP.NET MVC 2 version now installed on my dev machine is 2.0.50217.0.
Exception Message: Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'.
InnerException Message: <FilePath>ViewsLanguageRenderLanguageNavigation.ascx(6): error BC30451: 'Model' is not declared. It may be inaccessible due to its protection level.
The error occurs on this "Html.RenderAction":
[Code]....
The "LanguageController" just calls into another service function as below:
[Code]....
Does anybody have an idea what is causing the problem?
Edit:
By the way, I might also share the actual view (partial view) that would show the languages to select from:
I'm creating an ASP.NET MVC 2 (RTM) project that uses areas. The Index action of the Home controller of one area needs to use RenderAction to generate a sub-section of the page. The action called is also defined in the same Home controller. So the call should just be:
<% Html.RenderAction("List") %>
However, I get an exception:A public action method 'List' was not found on controller 'RareBridge.Web.Areas.Events.Controllers.HomeController'.
Note that I'm not in the "Events" area! I'm in a completely different area. If I remove the "Events" home controller, then the exception still occurs but names a different controller (still not the one I want it to call).
I've also tried providing the controller name and area to the RenderAction method, but the same exception occurs. What is going on here?
Let's say there is a textbox and a dropdownlist in mainview page, these two values are used by three partial views as well. when I use Html.RenderAction to post action to those three partial views, how to pass these two values to those partial views and in those views how to get these two values as a part of a object to send to database.
It's a little unclear for me on when to use a custom helper method and when to use RenderAction and also when to simply use ViewData instead. Some of their functions overlap slightly.
For example, if I were to create a Category navigation bar, would I create a new helper method and place that in some partial view? I had initially though of doing this, but I read on some blog to use RenderAction instead.
Assume the list of categories is coming from some data source.
I have recently started working on ASP.NET with MVC 2 framework, and I am facing following difficulty in validating my data,
Scenario:
In my application the view (ASPX) is divided into tabs (jQuery) and each tab's content is ViewUserControl (ASCX). The main model for the view has collection of sub models for individual tabs. I use RenderPartial method to render view user control.
[Code]....
And the user control (Tab1.ascx) refers the specific model for it,
[Code]....
Now if in my Tab1Model if I put following validation
[Code]....
In the controller ModelState.IsValid is always indicates TRUE. How do I override the validation behavior such that it as well looks the items in the collection member (which holds sub models) as well.
