asp.net-mvc , PartialView data not posting back to controller


PartialView data not posting back to controller

Question:

Tag: asp.net-mvc

I am loading the partial view based on dropdownlist value as suggested in the following links. I am able to show partial View and enter values in textboxes. But when I postback, I am unable to get values in Controller. I am getting all other values except this partial view values

Render Partial View Using jQuery in ASP.NET MVC

div id="divFloorPlans"></div>

 $('#ddlFloorPlans').change(function () {
        var numberOfFloorPlans = $(this).val();
        var data = { "id": numberOfFloorPlans };
        $.ajax({
            url: "FloorPlans",
            type: "POST",
            data: data, //if you need to post Model data, use this
            success: function (result) {                  
                $("#divFloorPlans").html("");
                $("#divFloorPlans").html(result);
            }
        });
    });

@model IList<ViewModels.FloorPlan>
@for (int i = 1; i <= Model.Count; ++i)
    {
        <div class="col-md-12" >               
            <div class="col-md-2" >
                @Html.DropDownListFor(m => m[i - 1].Bedrooms, ViewData["Bedrooms"] as List<SelectListItem> })
            </div>
            <div class="col-md-2" >
                @Html.DropDownListFor(m => m[i - 1].Bathrooms, ViewData["Bathrooms"] as List<SelectListItem> })
            </div>
            <div class="col-md-3" >
                @Html.TextBoxFor(m => m[i - 1].MinPrice})
                @Html.TextBoxFor(m => m[i - 1].MinPrice })
            </div>
            <div class="col-md-3">
                @Html.TextBoxFor(m => m[i - 1].MinSqFt, new { @placeholder = "From" })
                @Html.TextBoxFor(m => m[i - 1].MaxSqFt, new { @placeholder = "To"})
            </div>              
        </div>
    }

My Model looks like this.

  public class ItemEditVM
{
  public FloorPlan FloorPlan { get; set; }

    public IList<FloorPlan> ListFloorPlans { get; set; }
}

My Controllers

    //Partial View Returning Controller
    [HttpPost]
    public ActionResult FloorPlans(int id)
    {
        var model = new ItemEditVM();

        model.NumOfFloorplans = id;

        model.ListFloorPlans = new List<FloorPlan>();

        for (int i = 0; i < id; i++)
        {
            model.ListFloorPlans.Add(new FloorPlan { FloorPlanName = "", Bathrooms = "", Bedrooms = "", MaxPrice = "", MinPrice = "", MaxSqFt = "", MinSqFt = "" });
        }

        return View("FloorPlan", model.ListFloorPlans);
    }

    //Create Controller
    [HttpPost]
    public ActionResult Create(ItemEditVM model)
    {
        if (ModelState.IsValid)
        {

        }
    }

Answer:

You partial views model is IList<FloorPlan> which is generating controls with

<input name="[0].MinPrice" ..>
<input name="[1].MinPrice" ..>

which would post back to IList<FloorPlan> model, but your method parameter is ItemEditVM model. You need to the partial view model to be @model ItemEditVM

In the GET method

return View("FloorPlan", model);

and in the view

@model ItemEditVM
@for (int i = 1; i <= Model.ListFloorPlans.Count; ++i)
{
    ....
    @Html.TextBoxFor(m => m.ListFloorPlans[i - 1].MinPrice})
    ....
}

which will generate the correct name attributes for binding to your model

<input name="ListFloorPlans[0].MinPrice" ..>
<input name="ListFloorPlans[1].MinPrice" ..>

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