Laravel - Edit role user by role_name - php

Question

I have made an edit page for my users and everything works except changing the role. I have made a select menu which displays all the roles through a foreach loop. And it displays the current role of the user like this:
<div class="form-group row">
<div class="col-md-4">
<label for="Datum">Rol:</label>
</div>
<div class="col-md-8">
<select class="form-control" id="Datum" name="role">
<option selected>{{ $user->role->role_name }}</option>
#foreach($roles as $role)
<option>{{ $role->role_name }}</option>
#endforeach
</select>
</div>
</div>
I want to be able to change the role by the role_name instead of ID. I honestly don't know where to look. How can I achieve this?
The controller that the form goes through looks like this:
public function updateUser(Request $request, $id)
{
$user = User::find($id);
$user->update($request->all());
$user->save();
return back()->with('flash', 'Account is geupdate');
}
In the database, a user has a role_id and in the role table, it has all the roles. So the relations are: User has a Role, Role has many users. These relations are set in the models. So {{ $user->role->role_name }} works just fine.
Thanks in advance!

Answer 1

Assume role_name is unique. In your post method you can do the following-
public function updateUser(Request $request, $id)
{
$role = Role::where('role_name','=',$request->input('role_name'))->first();
$user = User::find($id);
$user->role_id = $role->id;
$user->save();
return back()->with('flash', 'Account is geupdate');
}
As per your comment, add this on your user model-
public function setPasswordAttribute($password)
{
$this->attributes['password'] = bcrypt($password);
}
Hope it helps :)