MVC :: Generate View With Loop And Metadata Class?
Feb 12, 2011
I'n trying to setup a view template dynamically using a foreach loop. The view template is as follows:
[Code]....
My metadata class is as follows:
[Code]....
The partial seems to render the labels correctly, displying the appropriate name for the fiields that I have annotated. However the value of the fields is always set to the class property name itself rather than the value of the given record itself.Now I'm pretty sure my problem is something stupid, but I can't see what I am missing. I followed Brad Wilson's guide here adjusting it for Razor's syntax:http://bradwilson.typepad.com/blog/2009/10/aspnet-mvc-2-templates-part-4-custom-object-templates.html
I have found hints that MVC 2 recognises the 'buddy class' type of property metadata, where data annotation attributes are applied to a 'buddy' metadata class, and the MetadataType on the actual entity class points to that buddy class, as below. However, as below, it seems the only attribute that makes any difference to the rendered UI is DisplayName. Why are the other attributes like DataType, Required, and ReadOnly not working? I.e. why can I enter text in a read only field? Why do I not get an error when a required field is empty? Why does the DataType attribute have no apparent effect? Why does EditorForModel not include validation messages?
[MetadataType(typeof(CustomerMetadata))] public partial class Customer { public class CustomerMetadata { [ScaffoldColumn(false)] public object CustomerId { get; set; } [DisplayName("CustomerNo.")] [ReadOnly(true)] [Required(AllowEmptyStrings = false, ErrorMessage = "Customer No. is required.")] public object CustomerNo { get; set; } } }
I find behaviour the same whether I use an explicit LabelFor and TextBoxFor for each model property, or a single EditorForModel for the whole model.
I'm working on an ASP.NET MVC 2 project with some business entities that have metadata dataannotations attributes applied to them (Validation attributes, Display attributes, etc.).
Something like:
[Code]....
Using the metadata from different views is no problem, as long as I am using my business entities as viewmodels or as part of a viewmodel like this:
[Code]....
However, sometimes I need to code a view for editing some, but not all fields of an entity. For those fields I want to reuse the metadata already specified in my user entity. The other fields should be ignored. I'm talking about custom view models like this:
[Code]....
That's where I am running into problems. The custom view model above leads to an exception when the view is generated, because it has no password property.
The associated metadata type for type 'Zeiterfassung.Models.ViewModels.Users.UserNameViewModel+UserModel' contains the following unknown properties or fields: Password. make sure that the names of these members match the names of the properties on the main type.
Also, even if this exception did not occur, I expect to get into even more trouble with model validation on form submit because Password is marked as required in my business entity.
I can think of several workarounds, but none seem really ideal. In any case I can't change the database layout so that the password field would be in a separate entity in my example above.
I would like to extend the HtmlHelper by using metadata (similar to DataAnnotaions metadata). Specifically I want to be able to add a 'Title' attribute to html controls that will then appear as a tooltip on the control. I would like to keep the tooltip text with my model, for example by adding 'Tiltle' metadata to the model as follows:
[DisplayName("User Id")] [Title("Enter your 10 digit user id")] property UserId { get; set; }
So the questions are:
1. How do I add metadata (such as 'Title') to my model?
2. How do I access this metadata in my HtmlHelper extension method?
I have a generic class and I want to generate a URL when given the controller and action values. The most obvious method is Html.Action(controller, action), but this can only be called within a View. I tried adding 'using System.Web.Mvc;' to my class, but this doesn't give me the Action() method. I also tried converting this to an HtmlHelper class, but again no luck.
How do I generate a fully qualified URL within a class using the controller and action names?
I am trying to generate a random number from within a class and am getting "Type 'Random' is not defined" - does anyone have any ideas. Here is the code
**note the code works on an aspx.vb page, but not from within my class Dim RandomClass As New Random() Dim RandomNumber As Integer RandomNumber = RandomClass.Next(3)
When I am creating Strongly Typed View I get lots of Classes in View Data Drop down. Classes like Automapper, ninject, Interface..., latebound... Due this its very hard to find my project classes. Is there any way to restrict dropdown to only display my project classes?
I have just added routing in a new asp.net 4 web forms application, and have got my route table set up ok and page requests are working fine. What I now want to do is use the Page.GetRouteUrl method whenever I need to generate one of my seo friendly Url's. I started to implement this across various pages then thought it might cut down on code a bit if I had a method in one of my own helper classes, that constructs this url (using the Page.GetRouteUrl method) as I might have several parameters that need to be specified against the Page.GetRouteUrl method each time.
However, within my helper class, it doesn't know what 'Page' is. I was thinking I could pass in 'Page' from the page that wants a routed url to be generated, but in some cases I want to construct one of these Url's in another class which doesn't know what 'Page' is, and in that scenario wouldn't be able to pass it in as a param (and therefore wouldn't be able to use the Page.GetRouteUrl within my helper class). What is the normal approach when wanting to use Page.GetRouteUrl within classes that don't have an instance of the Page object?
How to generate a path/url from a Route in the Routes table? only this time I'd like to be able to build a url within one of my Model (partial) classes. I'm defining a new property that will contain the text to be rendered within an rss feed, and want to inser urls (within anchor tags) in this text. I found the UrlHelper.GenerateUrl method, but get unstuck once I get beyond passing in the appropriate RouteName, ActionName and ControllerName.
I would like to generate my links automatically via a static class in each of my aspx pages (or in a common BasePage).Currently I use this:
private const string TEMPLATE = "~/One.aspx"; public static string Link () ( string link = String.Format(TEMPLATE); return link; )
But the name of my page, One.aspx is hardcoded. Is it possible to generate the path instead of this hardcoded constant TEMPLATE. You should know that I do not instantiate the class before creating the link.
I have created an extended method for DataTable. I want to generate a class automatically in my solution when i call that method while writing a code as Visual studio does when it doesnt find the method.e.g mytable.mymethod(); Generate a class
i wanna use to subsonic 3.0.4 but i dont know, how can i start to generate class and use to new Template of T4. example: create new solution for generating to table's class and add to my project. ??
Currently I have a class that represents a document. This document needs to be displayed as HTML. I would like to have a method to call such as GetHTML() that would then call GetHTML() on any properties/sections of the document that needed to be rendered. I was initially thinking about using linq and XElement but am wondering if that may cause issues with certain tags in HTML. Would I better off using an HtmlTextWriter?
I am creating a ASP.Net application in MVC architecture. I have to connect to a database on MS Access and be able to enter data into it. All examples I see use SQL Server. When I try from prject explorer Add New Item -> Data -> I am unable to find Drivers for Access Database.
From the Data Connections in Server Explrere window I was able to make a successful connection to the database.
as a php developer ive been told to go the MVC route which ive been trying since yesterday. Im using visual web delveloper 2010 express and im using the MVC template project.Ive basically got a news table in MSSQL Express, in there are these fields ID,(Title,Body,PostedOn,PostedBy) all i wanna do is loop through them to put them on the view.Im after a nudge in the right direction, I want to be able to do a SQL lookup in the controller put that data in a DataTable then run a foreach loop on the table to display this on the view. The problem im getting is I know youre not suppsed to put any HTML in the controller and I cant pass the datatable to the view to do the loop in the view.. so where/how do I do the loop.
In ASP.NET MVC Application I would like to document my Views, so that I can generate a documentation (using NDoc). Since Views do not have a code behind the documentation should go somewhere into the View directly. I also do not want to generate code-behind file for each View in the project
Is there a tool/workflow/configuration that would allow me to extract inline documentation comments from aspx files (Views)
How can I get the resolved (<%%> resolved) view (aspx or ascx) in a string format? I want to have .ascx file with some <%= ... %> code blocks and I want to be able to send it as part of e-mail in HTML format. How can I do this with MVC?
it is possible to customize the typed view generation process to generate the proper controls based on the fields annotations of a model. For Example I have a Person Model that contains Foreign Keys like CityID,DepartmentID etc. So When i generate a view againt the Person Model it creates textbox's for all the Person fields but i want dropdownlists against FK fields. It Should be smart enough to at least geereate the peroper controls based on the Person's field annotations. How can i acheive that? Has anybody worked on that?
