MVC :: MVC3 Beta Razor Views - Not Partial Classes?
Oct 12, 2010
Why are Razor views not generated as partial classes? Making them partial classes gives us the option to have a code behind where we can do some of the stuff we're forced to do in the template itself in the code behind file.
Yes, I know the standard "go-to" thing is Html helper but I don't want to use Html helpers for these things as they are too specific to the view in question and besides, having a clutter of extension methods is just not the way to go.
I'd like to see Razor views generated as partial classes.
Using the Razor engine how do I create Partial Views. Do I create a normal View and calling the PartialView() in the controller will only output the body content and when calling View() in the controller will output the full page with layout. If not, do I need to create specific Partial Views and then use RenderPartial in the View.
Im currently using a method that looks like the following code to add script and css files to the head of the Layout file.
[Code]....
My problem is that this is a static method meaning it persists the list of stylesheets and script files.
I need to do the same thing that this does but without keeping it persistant.
I need the lists to be remade on every request since they change from page to page what the look are on that specific page.
Is it possible to clear the lists on every request prior to adding the scripts that are needed or maybe after they have been rendered out?
Update:
The reason for not using a section, RenderPartial or RenderaActions is to prevent the same stylesheet or script file to be added more than once to the Layout file.
The site im building has a Layout_.cshtml with the basic layout. This in turn is used by a View that loops through a list of items and for each item a RenderAction is called that outputs the specific partial view for that item. These partial views sometimes need to add stylesheets and scripts.
As there can be needed to add many different scripts and stylesheets from different partial views a global list for styles and scripts were the only way i thought this could be done so there is a global place to check if a script is allready added to the collection or not and then render them all at once in the order they were added.
Update 2:
The real question is how to do the same kind of function (a global list) but without using a static Extension method.
I have written a t4 template that basically replaces the work done by StronglyTypedResourceBuilder to give design time access to string resources as properties of classes, one class per resource file. Why? Well I needed to add some customer code that handles string token substitution and a few other customizations. Anyway, the template is working out really well and I may blog on it soon.
In the mean time though, following a common pattern, I have one .resx file for each view, master page, controller, etc. I would really like my t4 template to add a property to each such entity that gives quick access the custom resource class associated with it. For controllers this is easy. T4MVC is ensuring that they are a all declared partial. All I need to do is create the appropriate partial class in my output that declares a readonly property that returns an instance of the appropriate generated resource class.
The Problem:
I would like to do the same thing, inject generated code, into my views. Were this traditional ASP.Net, each .aspx page would have a .aspx.cs page and possibly an .aspx.designer.cs page that are all partial classes extending in the aspx page's class definition. There is no such thing by default in MVC and for good reason. However, I think for my purposes, if there is a way to do this, it would be the way to go.
I could subclass ViewPage and add a generic type parameter and a property that returns the class of that type but that has certain complications. I think adding auto generated code to each view via partial class (that is what partials are for after all) is the way to go.
I have made a basic attempt. I have created a .aspx.cs file for a view and placed a code behind attribute in the page declaration but the class generated from the view seems to reside in a different assembly any my "partial class" ends up as its own class in the same assembly as all my other code.
I have an MVC view that contains a number of partial views. These partial views are populated using partial requests so the controller for the view itself doesn't pass any data to them. Is it possible to reload the data in one of those partial views if an action was triggered in another? For example, one partial view has a jqGrid and I want to refresh the data in another partial view when a user selects a new row in this grid. Is there a code example for this scenario (in C#) that I can look at to see what am I doing wrong? I am using ajax calls to trigger a new request but non of the partial views are refreshed so I am not sure if the issue is with the routing, the controller,
I am following the Nerd Dinner tutorial as I'm learning ASP.NET MVC, and I am currently on Step 3: Building the Model. One part of this section discusses how to integrate validation and business rule logic with the model classes. All this makes perfect sense. However, in the case of this source code, the author only validates one class: Dinner.
What I am wondering is, say I have multiple classes that need validation (Dinner, Guest, etc). It doesn't seem smart to me to repeatedly write these two methods in the partial class:
[code]....
This doesn't "feel" right, but I wanted to check with SO to get opinions of individuals smarter than me on this. I also tested it out, and it seems that the partial keyword on the OnValidate method is causing problems (understandably so). This doesn't seem possible to fix (but I could very well be wrong).
I'm trying to have all my views inherit from a custom class so that I can add certain behaviour and values to all pages, but I'm having some issues. I tried subclassing System.Web.Mvc.WebViewPage but I'm forced to implement an Execute procedure that I don't know what it should do. Also, if I try to access the Context variable, I get a null reference (really weird). This leads me to think that I may have the wrong base class.
i'm upgrading my asp.net mvc app to the MVC 3 from mvc 2. I had everything set up so that there were no areas, but now i have to move the old application into its own area so i can start a new one. The new area is working great, but for some reason, when i try to go into the area where the old app was, it looks for the views to be in the views folder in the root of the app, instead of in the views folder in the area.
I have a question about the MVC3 view page activator and how changes to the views trigger recompilation. There seems to be some magic going on in BuildManager that I can't see because the source code is not available for the symbols -- and even reflector can't see inside.
What I've done is implement my own VPP and subclass of the Razor view engine for purposes of displaying razor views that do not live on the filesystem. My mock setup just returns data from a string to render. This works fine, but what does not work is when you change that data, the class is not recompiled. And it is not clear how to get either RazorBuildProvider or BuildManager to regenerate the c# code and recompile it when the data returned from the VPP is different.
Would like to add a third party test framework (such as NUnit or MbUnit) to the drop-down list of test projects for the ASP.NET MVC3 type project in Visual Studio 2010.
This had worked before for ASP.NET MVC2 and prior, but the msdn instructions are not accurate and does not work. Creating the registry keys in the HKEY_CURRENT_USER seem to delete the keys every time the VS-2010 starts, the HKEY_LOCAL_MACHINE does not follow the same tree structure.
how to add a third party framework under ASP.NET MVC3?
I currently trying to convert a ASP.NET MVC2 application to ASP.NET MVC3 razor. I have a lot custom Html helper methods, which render html output, like the one below, which renders a button with some markup :
I've recently switched over to using the Razor view engine, and I want to specify a namespace to use in a view. I've tried adding an entry to the Web.config file, ie:
[Code]....
But none of my views recognise any of the classes inside that namespace, so I have to declare the namespace in every view that needs it. why the Web.config approach isn't working?
I would like to do some customizing to the T4 template used to generate code for views added using the Add View dialogue in VS 2010. Assuming this is, in fact, done with T4 like traditionally ASPX views, where can I find this template? I have successfully customised the ASPX template, but I can't recall where I found it.
What is the appropriate way of rendering a child template?And what's the difference? Both seem to work for me.And why does @Html.RenderPartial() no longer work?
What is the best way to add javascript at runtime from a view (or partialview)? For example i would like to build a partial view Banner.cshtml that use Banner.Js. Actually i am using a section into layout page but obviusly if i use 3 times the same partial view i have 3 reference to external Js. Is there a "best practice" to include Js from "child" elemnts like partial view in this case?
I'm using Entity Framework to create my data objects. Here's what my designer.cs file looks like:
[code]....
But my validations aren't loaded. If I try to submit the form with no value for Name, I get an error message saying The value '' is invalid. instead of my error message.
