CODEWITHSUNDEEP
c#asp.net-mvc
Yuriy Mayorov
Yuriy Mayorov

Reputation: 971

asp mvc viewmodel validation attribute

I am using one ViewModel for two actions: create and update. But field

CommonFile

(with required attribute) is situated in Create view. So ModelState.IsValid is false in update action. How to use one modelview in this two views?

public class UnitViewModel
{   
    public int Id { get; set; }

    [Required(ErrorMessage = "Required field")]
    [StringLength(256, ErrorMessage = "SomeMessage")]
    public string Title { get; set; }

    public string Code { get; set; }

    [Required(ErrorMessage = "Required field")]
    [DateAttribute(ErrorMessage = "Incorrect date format")]
    public string MapDeadline { get; set; }

    public int InAllCount { get; set; }

    public int LoadedCount { get; set; }

    [Required(ErrorMessage = "Required field")] 
    [FileAttribute(AllowedFileExtensions = new string [] { ".xls", ".xlsx" })]
    public HttpPostedFileBase CommonFile { get; set; }
}

Upvotes: 1

Views: 2470

Answers (3)

yavuz
yavuz

Reputation: 332

although Bigfellahull's solution is a much better approach, In update action you can check the ModelError then if the error is related to field CommonFile, just ignore it.

Upvotes: 0

James Hull
James Hull

Reputation: 3689

Have a CreateViewModel that inherits UnitViewModel

public class CreateViewModel : UnitViewModel 
{
    [Required(ErrorMessage = "Required field")] 
    [FileAttribute(AllowedFileExtensions = new string [] { ".xls", ".xlsx" })]
    public HttpPostedFileBase CommonFile { get; set; }
}

Upvotes: 4

Haney
Haney

Reputation: 34822

This is an OO question. Create a BaseUnitViewModel that has everything but the CommonFile, then derive from it with the CommonFile for your method that needs it.

Upvotes: 0

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