Add or remove user role

Question

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I try to add my user to role but its not working .

What I have tried:

C#

[BindProperty]
public MyUser MyUser { get; set; }
public async Task<IActionResult> OnPostAsync(string  id, UserManager<MyUser>role)
{

    if (id == null)
    {
        return NotFound();
    }

    MyUser = await _context.Users.FirstOrDefaultAsync(e => e.Id == id);


  
    var userId = _userManager.GetUserId(User);

    var user = await _context.Users
      .Where(u => u.Id == userId)
      .FirstOrDefaultAsync();
    

    await role.AddToRoleAsync(user, "admin");
    await _context.SaveChangesAsync();
   


    return Page();
}

Razor

<tbody>
    @foreach (var item in Model.MyUser)
    {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.UserName)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Email)
            </td>
            <td>
                <form method="post">
                    <a asp-page=""><input type="submit" class="btn btn-primary" value="Add Role" /></a>
                </form>
            </td>
        </tr>
    }
</tbody>

Posted 6-Apr-21 6:07am

Banana Life

Updated 6-Apr-21 6:36am

Richard Deeming

v2

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2 solutions

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard Deeming · Answer 1 · 2021-04-06T06:20:00

The foreach block in your view makes no sense - why would a class representing a single user implement IEnumerable<???>?

But the problem appears to be in your action:

C#

// Find the user with the specified ID, and store it in the MyUser property:
MyUser = await _context.Users.FirstOrDefaultAsync(e => e.Id == id);

// Find the ID of **THE CURRENT USER**:
var userId = _userManager.GetUserId(User);

// Find the user with the same ID as **THE CURRENT USER**:
var user = await _context.Users.Where(u => u.Id == userId).FirstOrDefaultAsync();

// Add **THE CURRENT USER** to the admin role:
await role.AddToRoleAsync(user, "admin");

That should simply be:

C#

// Find the user with the specified ID:
var user = await _context.Users.FirstOrDefaultAsync(e => e.Id == id);

// Add that user to the admin role:
await role.AddToRoleAsync(user, "admin");
await _context.SaveChangesAsync();

Banana Life · Answer 2 · 2021-04-06T06:36:00

ASP.NET

//this is my view users list(IEnumerable)for super admin  

 public IList<MyUser> MyUser { get; set; }


       
        public async Task<IActionResult> OnGetAsync()
        {
          

           MyUser = await _context.Users.ToListAsync();

            return Page();
        }

Add or remove user role

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Add or remove user role

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