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Model value not being set on return from View to Controller RSS

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Last post Nov 09, 2012 05:08 PM by medelbrock

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wsyeager36

Member

388 Points

458 Posts

Model value not being set on return from View to Controller

Nov 08, 2012 11:32 PM|LINK

I have a boolean model variable who's value is supposed to be set to TRUE in order to perform a process on return back into the Controller.

namespace PDFConverterModel.ViewModels
{
    public partial class ViewModelTemplate_Guarantors
    {
        public ViewModelTemplate_Guarantors()
        {
            Templates = new List<PDFTemplate>();
            Guarantors = new List<tGuarantor>();
        }

        public int SelectedTemplateId { get; set; }
        public List<PDFTemplate> Templates { get; set; }

        public int SelectedGuarantorId { get; set; }
        public List<tGuarantor> Guarantors { get; set; }

        public string LoanId { get; set; }
        public string DepartmentId { get; set; }
        public bool isRepeat { get; set; }
        public string ddlDept { get; set; }
        public string SelectedDeptText { get; set; }
        public string LoanTypeId { get; set; }
        public string LoanType { get; set; }
        
        public string Error { get; set; }
        public string ErrorT { get; set; }
        public string ErrorG { get; set; }
        public bool ShowGeneratePDFBtn { get; set; }
        public bool ShouldGeneratePdf { get; set; }
    }
}

MasterPage

<!DOCTYPE html>
<html>
<head>
    <title>@ViewBag.Title</title>
    <link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
    <link href="@Url.Content("~/Content/kendo/2012.2.913/kendo.common.min.css")" rel="stylesheet" type="text/css" />
    <link href="@Url.Content("~/Content/kendo/2012.2.913/kendo.dataviz.min.css")" rel="stylesheet" type="text/css" />
    <link href="@Url.Content("~/Content/kendo/2012.2.913/kendo.blueopal.min.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.7.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/modernizr-2.5.3.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/kendo/2012.2.913/kendo.all.min.js")"></script>
    <script src="@Url.Content("~/Scripts/kendo/2012.2.913/kendo.aspnetmvc.min.js")"></script>
</head>

<body>
    <div class="page">
        <header>
            <div id="title">
                <h1>BHG :: PDF Service Generator</h1>
            </div>
        </header>
        <section id="main">
            @RenderBody()
        </section>
        <footer>
        </footer>
    </div>
</body>
</html>

View

@model PDFConverterModel.ViewModels.ViewModelTemplate_Guarantors

@using (Html.BeginForm("ProcessForm", "Home", new AjaxOptions { HttpMethod = "POST" }))
{ 
    <table style="width: 1000px">
        
        @Html.HiddenFor(x => x.ShouldGeneratePdf)

        <tr>
            <td>
                <img alt="BHG Logo" src="~/Images/logo.gif" />
            </td>
        </tr>
        <tr>
            <td>
                @(Html.Kendo().IntegerTextBox()
                  .Placeholder("Enter Loan Id")
                  .Name("LoanId")
                  .Format("{0:#######}")
                  .Value(Convert.ToInt32(Model.LoanId))
                )
            </td>
        </tr>
        <tr>
            <td>@Html.Label("Loan Type: ")
                @Html.DisplayFor(model => Model.LoanType)
            </td>
            <td>
                <label for="ddlDept">Department:</label>
                @(Html.Kendo().DropDownListFor(model => Model.ddlDept)
                            .Name("ddlDept")
                            .DataTextField("DepartmentName")
                            .DataValueField("DepartmentID")
                            .Events(e => e.Change("Refresh"))
                            .DataSource(source =>
                            {
                                source.Read(read =>
                                {
                                    read.Action("GetDepartments", "Home");
                                });
                            })
                            .Value(Model.ddlDept.ToString())
                    )
            </td>
        </tr>

        @if (Model.ShowGeneratePDFBtn == true)
        {
            if (Model.ErrorT == string.Empty)
            {
            <tr>
                <td>
                    <u><b>@Html.Label("Templates:")</b></u>
                </td>
            </tr>
            <tr>
                @for (int i = 0; i < Model.Templates.Count; i++)
                {  
                    <td>
                        @Html.CheckBoxFor(model => Model.Templates[i].IsChecked)
                        @Html.DisplayFor(model => Model.Templates[i].TemplateId)
                    </td> 
                }

            </tr>
            }
            else
            {
            <tr>
                <td>
                    <b>@Html.DisplayFor(model => Model.ErrorT)</b>
                </td>
            </tr>
            }

            if (Model.ErrorG == string.Empty)
            {
            <tr>
                <td>
                    <u><b>@Html.Label("Guarantors:")</b></u>
                </td>
            </tr>
            <tr>
                @for (int i = 0; i < Model.Guarantors.Count; i++)
                { 
                    <td>
                        @Html.CheckBoxFor(model => Model.Guarantors[i].isChecked)
                        @Html.DisplayFor(model => Model.Guarantors[i].GuarantorFirstName)&nbsp;@Html.DisplayFor(model => Model.Guarantors[i].GuarantorLastName)
                    </td> 
                }

            </tr>
            }
            else
            {
            <tr>
                <td>
                    <b>@Html.DisplayFor(model => Model.ErrorG)</b>
                </td>
            </tr>
            }
        }
        <tr>
            <td>
                <input type="submit" name="submitbutton" id="btnRefresh" value='Refresh' />
            </td>
            @if (Model.ShowGeneratePDFBtn == true)
            {
                <td>
                    <input type="submit" name="submitbutton" id="btnGeneratePDF" value='Generate PDF' />
                </td>
            }
        </tr>
        <tr>
            <td style="color: red; font: bold">
                @Model.Error
            </td>
        </tr>

    </table>
}

<script type="text/javascript">

    $('#btnRefresh').click(function () {
        Refresh();
    });

    function Refresh() {

        var LoanID = $("#LoanID").val();

        if (parseInt(LoanID) != 0) {
            $('#ShouldGeneratePdf').val(false)
            document.forms[0].submit();
        }
        else {
            alert("Please enter a LoanId");
        }
    }

    //$(function () {
    //    //DOM loaded
    //    $('#btnGeneratePDF').click(function () {
    //        DisableGeneratePDF();
    //        $('#ShouldGeneratePdf').val(true)
    //    });
    //});

    //function DisableGeneratePDF() {
    //    $('#btnGeneratePDF').attr("disabled", true);
    //    $('#btnRefresh').attr("disabled", true);
    //}


    $('#btnGeneratePDF').click(function () {
        alert("inside click function");
        DisableGeneratePDF();
        $('#ShouldGeneratePdf').val(true)
        tof = $('#ShouldGeneratePdf').val();
        alert("ShouldGeneratePdf set to " + tof);
    });

    function DisableGeneratePDF() {
        alert("begin DisableGeneratePDF function");
        $('#btnGeneratePDF').attr("disabled", true);
        $('#btnRefresh').attr("disabled", true);
        alert("end DisableGeneratePDF function");
    }

</script>

Controller

[HttpPost]
        public ActionResult ProcessForm(string submitbutton, ViewModelTemplate_Guarantors model, FormCollection collection)

if ((submitbutton == "Refresh") || (submitbutton == null) && (model.ShouldGeneratePdf == false))
            {
}
else if ((submitbutton == "Generate PDF") || (model.ShouldGeneratePdf == true))
            {
}

The "Alerts" in the script above come out to exactly what they should be on the remote server. The last alert shows that the value of the bool variable is "true". However, when I do page source views of the hidden variable, below is the result.

The values of the hidden variable when the page loads and when the last alert button finishes are as follows:

My local machine:

<input data-val="true" data-val-required="The&#32;ShouldGeneratePdf&#32;field&#32;is&#32;required." id="ShouldGeneratePdf" name="ShouldGeneratePdf" type="hidden" value="false" />

<input data-val="true" data-val-required="The&#32;ShouldGeneratePdf&#32;field&#32;is&#32;required." id="ShouldGeneratePdf" name="ShouldGeneratePdf" type="hidden" value="true" />

The remote machine:

<input data-val="true" data-val-required="The&#32;ShouldGeneratePdf&#32;field&#32;is&#32;required." id="ShouldGeneratePdf" name="ShouldGeneratePdf" type="hidden" value="false" />

 <input data-val="true" data-val-required="The&#32;ShouldGeneratePdf&#32;field&#32;is&#32;required." id="ShouldGeneratePdf" name="ShouldGeneratePdf" type="hidden" value="false" />

As you can see, the value on my machine is set to true when the process executes. However, on the remote machine, it is set to false where it then doesn't excute.

Why isn't the value in the model being returned as TRUE on the remote machine?

Thanks,

Bill Yeager
MCP.Net, BCIP

- Reply
medelbrock

Member

729 Points

153 Posts
Re: Model value not being set on return from View to Controller

Nov 09, 2012 05:08 PM|LINK
The default(bool) is false and will be initialized everytime. Try making
```
public bool ShouldGeneratePdf { get; set; }

//to

public bool? ShouldGeneratePdf { get; set; } // sugar syntax
```
See if you get a value of "undefined". It will atleast show you if your variable is being set or not.
- Marked as answer by Young Yang - MSFT on Nov 30, 2012 10:29 AM

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Model value not being set on return from View to Controller RSS

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wsyeager36

Model value not being set on return from View to Controller

medelbrock

Re: Model value not being set on return from View to Controller

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