Databases
StackOverflow2013
Postsdbo
POPopulate child view model collection when posting to controller
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POPopulate child view model collection when posting to controller
    primarykey
    data
    text
    <p>I have a page where you can add a Company. A company has multiple Employees. Here are my view models:</p> <pre><code>public class CompanyViewModel { [ScaffoldColumn(false)] public int CompanyId { get; set; } public string Name{ get; set; } public List&lt;EmployeeViewModel&gt; Employees { get; set; } } public class EmployeeViewModel { [ScaffoldColumn(false)] public int EmployeeId { get; set; } public int CompanyId { get; set; } public string FirstName { get; set; } public string LastName { get; set; } } </code></pre> <p>On my page, I have jQuery functionality to add/delete Employees dynamically. When I post my form, my view looks like this:</p> <pre><code>&lt;input id="CompanyId" name="CompanyId" type="hidden" value="0" /&gt; &lt;input id="Name" name="Name" type="text" value="Test company name" /&gt; &lt;input id="Employees[1].FirstName" name="Employees[1].FirstName" type="text" value="fn1" /&gt; &lt;input id="Employees[1].LastName" name="Employees[1].LastName" type="text" value="ln1" /&gt; &lt;input id="Employees[2].FirstName" name="Employees[2].FirstName" type="text" value="fn2" /&gt; &lt;input id="Employees[2].LastName" name="Employees[2].LastName" type="text" value="ln2" /&gt; &lt;input id="Employees[3].FirstName" name="Employees[3].FirstName" type="text" value="fn3" /&gt; &lt;input id="Employees[3].LastName" name="Employees[3].LastName" type="text" value="ln3" /&gt; </code></pre> <p>And my controller method:</p> <pre><code>[HttpPost] public ActionResult Create(CompanyViewModel viewModel) { ... } </code></pre> <p>When I go through the debugger to see what's in my view model after I post the form, the Employees collection is null. CompanyId and Name are passed through, but not the Employees collection.</p> <p>I've also tried changing the id and name of the input from <code>Employees[1].FirstName</code> to <code>Model.Employees[1].FirstName</code>, but that didn't help either.</p> <p>What am I doing wrong here?</p> <p>I'm using MVC 3 and Razor.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USSteven
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POPopulate child view model collection when posting to controller
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POPopulate child view model collection when posting to controller
      1. USSergey Brunov
      1. VTFavorite
    1. COThis might help you: [ViewModel's list is null in action](http://stackoverflow.com/questions/7155747/viewmodels-list-is-null-in-action)
      singulars
      1. POPopulate child view model collection when posting to controller
      1. USdohaivu
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload