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asp.net-mvcasp.net-mvc-4

Mvc model id 0 on post


I have an edit page for my model. When i post model back to my controller, Id property is 0. How can i maintain Id property on post?

I'm posting model to view, so Id property is set on get request. My code is below.

View:

@model xandra.Models.ProjectModel

@using(Html.BeginForm())
{ 
    @Html.HiddenFor(m => m.Id) 
    @Html.LabelFor(m => m.Name)
    @Html.TextBoxFor(m => m.Name)

    <br />

    @Html.LabelFor(m => m.Description)
    @Html.TextAreaFor(m => m.Description)

    <br />

    @Html.LabelFor(m => m.Website)
    @Html.TextBoxFor(m => m.Website)

    <br />

    @Html.LabelFor(m => m.Active)
    @Html.CheckBoxFor(m => m.Active)

    <input type="submit" value="Save" />
}

Controller:

[Authorize]
[HttpGet]
[InitializeSimpleMembership]
public ActionResult EditProject(string id)
{
    using (var entity = new dixraContext())
    {
        var project = entity.Projects.FirstOrDefault(m => m.UrlName == id);


        return View(project);
    }
}

[Authorize]
[HttpPost]
[InitializeSimpleMembership]
public ActionResult EditProject(ProjectModel model)
{
    using (var entity = new dixraContext())
    {
        var project = entity.Projects.FirstOrDefault(m => m.Id == model.Id);

        project.Name = model.Name;
        project.Description = model.Description;
        project.Website = model.Website;
        project.Tags = model.Tags;
        project.Active = model.Active;

        entity.SaveChanges();

        return RedirectToAction("GetProject", project.UrlName);
    }
}

And my model

public class ProjectModel
{
    [Key]
    [Required]
    public long Id { get; set; }

    [Required(AllowEmptyStrings=false)]
    public string Name { get; set; }

    [Required(AllowEmptyStrings=false)]
    public string Description { get; set; }

    [Required]
    public DateTime CreatedDate { get; set; }

    [Required]
    public int Creator { get; set; }

    public string Website { get; set; }

    [Required]
    public int CategoryId { get; set; }

    public virtual List<TagModel> Tags { get; set; }

    public string UrlName { get; set; }

    public bool Active { get; set; }
}

Solution

  • I've seen this happen before, it could be a bug. I have been able to work around it by adding the properties I need to be included in the post by not using the specific's view template syntax.

    Instead of this:

    @Html.HiddenFor(m => m.Id)
    

    Use this:

    <input type="hidden" value="@Model.Id" name="Id"/>