Chekbox from partial view isn't mapped

Question

Hi,
1st sorry for my bad english :-/

In my Razor pages app, I built a form using partial views since this options are shared with many pages like this :

  
      
      
          
            @Html.DisplayNameFor(model => model.Chapter.Title)  
          
          
              
          
          
            @Html.DisplayNameFor(model => model.Chapter.Order)  
          
          
              
          
      
  
    @await Html.PartialAsync("_PropertyPartial", Model.Chapter)  
    @Html.HiddenFor(model=>model.Chapter.CreatedBy)  
    @Html.HiddenFor(model=>model.Chapter.ModifiedBy)  
    @Html.HiddenFor(model=>model.Chapter.CreationDate)  
    @Html.HiddenFor(model=>model.Chapter.ModificationDate)  
    @Html.HiddenFor(model=>model.Chapter.ParentId)  
    @await Html.PartialAsync("Status/_StatusPartial", Model.Chapter)

// this part work if I use it instead of the partial above.
@*

@azzedinehtmlsql .DisplayName("Etat")

          
              
                  
                      
                          
                            @Html.CheckBoxFor(model => model.Chapter.IsPrivate)

*@

the partial called is

@model WikiGuidIdBase  
  
  
      
        @Html.DisplayName("Etat")  
      
  
      
          
            @if (Model is TopicBase)  
            {  
                @await Html.PartialAsync("./Status/_PrivateStatusPartial", Model)  
                @await Html.PartialAsync("./Status/_DeletedStatusPartial", Model)  
            }  
  
            @if (Model is IDraft)  
            {  
                @await Html.PartialAsync("./Status/_WritingProgressStatusPartial", Model)  
            }  
  
            @if (Model is Topic)  
            {  
                @await Html.PartialAsync("./Status/_OnlineStatusPartial", Model)  
            }

and the last partial, which is not mapped when I submit the form is

@{  
    var type = Model.GetType().Name;  
    var name = string.Empty;  
    var id = string.Empty;  
    if (!string.IsNullOrWhiteSpace(type))  
    {  
        name = string.Concat(type, "_IsPrivate");  
        id = string.Concat(type, ".IsPrivate");  
    }  
}  
  
@{  
    @if ((bool)ViewData["WritingMode"])  
    {  
          
              
                  
                    @*@Html.CheckBoxFor(model => (model as TopicBase).IsPrivate, htmlAttributes:new {@name = name, @id = id})*@  
                    @Html.CheckBox(name,(Model as TopicBase).IsPrivate, htmlAttributes:new{@id=id})  
                      
                      
                      
                      
                  
              
          
    }  
    else  
    {  
          
              
                  
                @if (!(Model as TopicBase).IsPrivate)  
                {  
                      
                }  
                else  
                {  
                      
                }  
                  
              
          
    }  
}

model heritage is correct,

Accepted Answer

When you pass a model property, rather than the model, to a partial then the binding name in the partial will not match the model for postback. You can use a different model for postback that matches the new binding names. You can also make a custom viewdata dictionary where you set the prefix

Answer

Hi
Thx for your answers.

I should pass the model instead of the property, ok.
But My Partial is a generic which accept many class from an heritage hierarchy.
Topic, Chapter, Section, Sub-section, Paragraph, Alinea : all this classes implements one or many common Interfaces, and are derivated like this :

259485-mymcd.pdf

all of the final classes have the IsPrivate property, so I tried to built à single reusable partial and pass the good class as a property of my CreateModel page (inherits from PageModel)
In ths CreateModel bind item is an instance of Chapter, in another use it will be Topic, Paragraph, etc.

@ AgaveJoe in this use case of the partial, ((bool)ViewData["WritingMode"]) == true becaus it's a create form. The partial is also used in read page.
@Bruce (SqlWork.com) : I don't know how to fix the problem... :`(

Answer

Ok, Since I need this function I wrote the code like this

  
      
      
          
            @Html.DisplayNameFor(model => model.Chapter.Title)  
          
          
              
          
          
            @Html.DisplayNameFor(model => model.Chapter.Order)  
          
          
              
          
      
  
    @await Html.PartialAsync("_PropertyPartial", Model.Chapter)  
    @Html.HiddenFor(model=>model.Chapter.CreatedBy)  
    @Html.HiddenFor(model=>model.Chapter.ModifiedBy)  
    @Html.HiddenFor(model=>model.Chapter.CreationDate)  
    @Html.HiddenFor(model=>model.Chapter.ModificationDate)  
    @Html.HiddenFor(model=>model.Chapter.ParentId)  
@*    @await Html.PartialAsync("Status/_StatusPartial", Model.Chapter)*@  
  
      
          
            @Html.DisplayName("Etat")  
          
  
          
              
                  
                      
                          
                            @Html.CheckBoxFor(model => model.Chapter.IsPrivate)  
                              
                              
                              
                              
                          
                      
                  
  
                  
                      
                          
                            @Html.CheckBoxFor(model => model.Chapter.IsDeleted)  
                              
                              
                              
                              
                          
                      
                  
  
                  
                      
                          
                            @Html.CheckBoxFor(model => model.Chapter.IsDraft)

But it'not DRY... If some has an idea, you're welcome

Answer

Sorry, I don't have a GitHub account... Git is too cryptic too me.

Chekbox from partial view isn't mapped

3 additional answers