I need to display set of checkboxes to being able to manage user roles. I can give to my view all of existing roles:
var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(new MlmDbContext()));
ViewBag.allRoles = roleManager.Roles.ToList();
And I can get roles for user into the view :
@{
foreach (var role in Model.Roles)
{
But what should I do to show ALL roles with binding to Model.Roles and than save changes?
you put the id of the roles as value on the form and then receive a table of int of selected roles il controller
In one of my projectt this is part of codes that should interest you:
Controller that provide data to the view:
public async Task<ActionResult> Create()
{
// Get the list of Roles
ViewBag.RoleId = new SelectList(await RoleManager.Roles.ToListAsync(), "Name", "Name");
return View();
}
View that shows roles:
<div class="form-group">
<label class="col-md-2 control-label">
@Resources.Global.SelectRole
</label>
<div class="col-md-10">
@foreach (var item in (SelectList)ViewBag.RoleId)
{
<input type="checkbox" name="SelectedRoles" value="@item.Value" class="checkbox-inline" />
@Html.Label(item.Value, new { @class = "control-label" })
}
</div>
</div>
Controller that receive roles selected :
[HttpPost]
public async Task<ActionResult> Create(RegisterViewModel userViewModel, params string[] selectedRoles)
{
if (ModelState.IsValid)
{...}
}
EDIT:
OK so this is what I think you need:
In the Controller:
RolesList = RoleManager.Roles.ToList().Select(x => new SelectListItem()
{
Selected = userRoles.Contains(x.Name),
Text = x.Name,
Value = x.Name
}),
In the view:
<div class="form-group">
@Html.Label("Roles", new { @class = "control-label col-md-2" })
<span class=" col-md-10">
@foreach (var item in Model.RolesList)
{
<input type="checkbox" name="SelectedRole" value="@item.Value" checked="@item.Selected" class="checkbox-inline" />
@Html.Label(item.Value, new { @class = "control-label" })
}
</span>
</div>
Here's how I did it.
Create an extension method on role manager, replace ApplicationRole with whatever class name you're using for your roles.
public static class RoleManagerExtensions
{
public static List<CheckBoxItem> GetRolesSelectList(
this RoleManager<ApplicationRole> roleManager,
IList<string> selectedValues)
{
List<CheckBoxItem> roles =
roleManager.Roles.ToList().Select(r => new CheckBoxItem
{
Selected = selectedValues.Contains(r.Name),
Id = r.Name,
Name = r.Name
}).ToList();
return roles;
}
}
Here's the CheckBoxItem POCO:
public class CheckBoxItem
{
public bool Selected { get; set; }
public string Id { get; set; }
public string Name { get; set; }
}
In your controller get the roles list and pass in the selected roles:
var selectedRoles = await _userManager.GetRolesAsync(user);
List<CheckBoxItem> roles = _roleManager.GetRolesSelectList(selectedRoles);
In your View, you can create your checkboxes like so:
@for (int i = 0; i < Model.Roles.Count; i++)
{
<input type="checkbox" asp-for="@Model.Roles[i].Selected" />
<label asp-for="@Model.Roles[i].Selected">@Model.Roles[i].Name</label>
<input type="hidden" asp-for="@Model.Roles[i].Id" />
<input type="hidden" asp-for="@Model.Roles[i].Name" />
}
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