ASP.NET MVC3 using both Model and custom ValidationModel in View

Question

I have a View like this (unimportant stuff left out):

@model MyProject.Models.Accounts

        <div class="editor-label">
            @Html.LabelFor(model => model.Name)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Name)
        </div>

Now, I have a separate Model I want to use for validation. Is it possible to use both my Model for data AND this validation Model in a View? Something like this:

@model MyProject.Models.Accounts
@validaitonmodel MyProject.Models.AccountValidationModel

            <div class="editor-label">
                @Html.LabelFor(model => model.Name)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.Name)
                @Html.ValidationMessageFor(validationmodel => validationmodel.Name)
            </div>

Thanks in advance.

EDIT

By "Model" I mean the models that are automaticly generated by the .edmx (the Ado.net self-tracking entities)

By ValidationModel I mean a custom class like this:

public class AccountValidationModel
{
    [Required]
    public String Name {get; set;}
}

I'm a little confused by your question. Can you clarify a bit by what you mean "you have a separate model you want to use for validation." Can you give a more concrete example? — JasCav
– JasCav, Commented May 13, 2011 at 15:01

Jerad Rose · Accepted Answer · 2011-05-13 18:20:39Z

3

I think the generally more acceptable practice is to either:

Add the attributes to your data model.
Bind your view to a separate ViewModel (in this case, your AccountValidationModel), and use a mapper tool (like AutoMapper) to map the data between your two models.

answered May 13, 2011 at 18:20

Jerad Rose

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2 Comments

Necros Over a year ago

i like #2. keeps your data and business layers out of the view.

Matthias Over a year ago

Thanks, AutoMapper looks like the thing I need.

Community · Accepted Answer · 2017-05-23 12:04:19Z

1

May be the MetadataType attribute could help you? http://msdn.microsoft.com/en-us/library/ee256141.aspx

The Validation Model must implement all properties to validated, and MetadataTypeAttribute must be apply on the Model itself.

Quick sample from stackoverflow: ASP.Net C# validating model based on MetadataType

Or, like the guy, take a look for another way to validation with fluentvalidation (never tried) http://fluentvalidation.codeplex.com/wikipage?title=mvc&referringTitle=Documentation

edited May 23, 2017 at 12:04

CommunityBot

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answered May 13, 2011 at 14:59

Loic El Thesea

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2 Comments

Matthias Over a year ago

But what if I have fields in my view like "ConfirmName" that need to be validated but are not present in my Model?

Loic El Thesea Over a year ago

Yeah, this is why Domain Model is different of View Model. Like @Jerad Rose said: create a ViewModel and map properties with AutoMapper is probably the best and the simplest way. codeclimber.net.nz/archive/2009/10/27/… Also, you can easly set the ModelBinder Attribute on a ViewModel.

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