Treeview itemAction: how to set checked based on field in datasource?

[Scott]

 If I have a treeview with .DataSource(d=>d.Model(....).Read(r=>r.Action(....)))

Can I use .ItemAction() to set item.checked based on a field provided in the DataSource?  How?

In the code below, what would I put in place of the bolded comment?

@( Html.Kendo()
       .TreeView()
       .DataTextField("Name")
       .Name("userPermissionsTree")

       .Checkboxes(cbxConfig => cbxConfig.Enabled(true)
                                         .CheckChildren(true)
                                         .Name("checkedNodes"))
       .DataSource(d => d.Model(m =>
                                {
                                    m.Field("enabled");
                                    m.Id("permissionId")
                                })
       .Read(read => read.Action("PermissionsTree_Read",
                                                   "SettingsUsers",
                                                   new {
                                                       userId = Model
                                                   })))
      .ItemAction(item=>item.Checked=    /*******set to true if field enabled is true**********/    )
      .Events(events => events
        .Check("onPrivilegeCheck"))
      )

[Daniel]

Hello,

The ItemAction method can only be used if the treeview is bound on the server. If the data is loaded via Ajax then you should set the checked field to true for the items returned from the server that should be checked.

Regards,
Daniel
Telerik

[Scott]

My question is how to do that, if ItemAction does not work.

 It appears that the Model in the DataSource does not allow for a checked field (see below).  So when/where/how would this be done?

.DataSource(d => d.Model(m =>
                         {
                             m.Field("enabled");
                             m.Id("permissionId");
                             m.checked("enabled"); // this is not available
                         })

[Daniel]

Hello again,

There isn't a configuration option to set the checked field name. You should include a field named checked in the items. Another option is to set the fields from option via the Custom builder:

.DataSource(dataSource => dataSource.Custom()
    .Transport(transport => transport
        .Read(read => read
            .Action("Action", "controller")
        )
    )
    .Schema(schema=> schema
        .Model(model =>
        {
            m.Field("checked", typeof(bool)).From("enabled");
            m.Id("permissionId");
        })
    )
)

but note that the enabled field will not be available in the items with this approach. 

Regards,
Daniel
Telerik