ASP.NET MVC 5 Change variant for complex Child list

I have an object named Job and one of the properties is List of Steps:

public class Job
{
    [Display(Name = "Id")]
    public int? JobId { get; set; }

    [Required]
    public string Name { get; set; }

    public List<Step> Steps { get; set; }

    public Job()
    {
        Steps = new List<Step>();
    }
}

public class Step
{
    public int? StepId { get; set; }

    public int JobId { get; set; }

    [Required]
    public string Name { get; set; }
}

      

I have a JobController with the following action to perform the update:

   // PUT: /Job/Edit/5
   [HttpPut]
   public ActionResult Edit(Job model)
   {
     // Logic to update model here
   }

      

Based on the answer to this question , I updated my UI (using the Bootstrap template that comes with MVC5) to:

@using (Html.BeginForm())
{
    @Html.HttpMethodOverride(HttpVerbs.Put)
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.JobId)

        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })

            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>

        <h3>Steps</h3>
        <div>
            @foreach (var item in Model.Steps)
            {
                <div class="form-group">
                    @Html.Hidden("Steps[" + stepIndex + "].StepId", item.StepId)
                    @Html.LabelFor(modelItem => item.Name, htmlAttributes: new { @class = "control-label col-md-2" })

                    <div class="col-md-10">
                        <input class="form-control text-box single-line" data-val="true" data-val-required="The Name field is required."
                               id="@String.Format("Steps_{0}__Name", stepIndex)" name="@String.Format("Steps[{0}].Name", stepIndex)" type="text" value="@item.Name" />

                     @Html.ValidationMessageFor(modelItem => item.Name, "", new { @class = "text-danger" })
                    </div>
                </div>
                stepIndex += 1;
                <hr />
            }
        </div>
        <div class="form-group">
             <div class="col-md-offset-2 col-md-10">
                    <input type="submit" value="Save" class="btn btn-default" />
                </div>
            </div>
        </div>
}

      

As you can see, I need to manually create an input tag as opposed to using Html.EditorFor. The reason is that I need to manipulate the id name so that it passes the index to id and name. I would guess there is a better approach that would allow MVC to display correct values ​​using labelFor, EditorFor and ValidationMessageFor.

I have the following questions:

  • Is there a set of controls that I can use with MVC5 that allows me to render complex child objects without going through these extra steps?
  • If not on 1, then is there a better approach than manually creating an input tag?
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2 answers


Option 1: Replace the loop foreach

with for

:

@for (int i = 0; i < Model.Steps.Count; i++)
{
    <div class="form-group">
        @Html.HiddenFor(m => m.Steps[i].StepId)
        @Html.TextBoxFor(m => m.Steps[i].Name, new { @class = "form-control text-box single-line" })
        ...
    </div>
}

      

Option 2. Create a named editor template Step.chtml

for the class Step

and use EditorFor

:

Step.chtml

@model Step
<div class="form-group">
    @Html.HiddenFor(m => m.StepId)
    @Html.TextBoxFor(m => m.Name, new { @class = "form-control text-box single-line" })
    ...
</div>

      



Main view

<h3>Steps</h3>
<div>
    @Html.EditorFor(m => m.Steps)
<div>

      

In both of these forms, the framework will give the inputs the correct names and IDs.

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It looks like things are more complicated, try below.
1. Create a new editor template (which is a view) named "Step.cshtml" in the EditorTemplates folder using the Step model.
2. In this case, do the following code,
Step.cshtml

@model Step
<div class="form-group">
@Html.HiddenFor(model => model.StepId)
@Html.LabelFor(modelItem => modelItem.Name, htmlAttributes: new { @class = "control-label col-md-2" })

<div class="col-md-10">
    @Html.TextBoxFor(model => model.Name, htmlAttributes: new { @class = "form-control text-box single-line" })
    @Html.ValidationMessageFor(modelItem => modelItem.Name, "", new { @class = "text-danger" })
</div>

      



3. Extract the foreach statement from your view and instead call the editor template as

@Html.EditorFor(model => model.Steps)

      

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