How can I get my custom gate working in Laravel? - php

Question

I am trying to create a custom gate that allows users of the "Administrator" team to access the Users index page. However, it functions exactly the opposite of what I want to achieve and I do not seem to understand where am I wrong here.
It always returns "false" regardless of the user belongs to an Admin team or not.
Help is appreciated. Thank you.
User.php :
public function AdminTeam(string $team)
{
return null !== $this->teams()->where('name', $team)->first();
}
AuthServiceProvider.php :
/**
* Register any authentication / authorization services.
*
* #return void
*/
public function boot()
{
$this->registerPolicies();
Gate::define('is-admin', function ($user){
return $user->AdminTeam('Administrator');
});
}
UserController.php :
/**
* Display a listing of the resource.
*
* #return \Illuminate\Http\Response
*/
public function index()
{
if (Gate::allows('is-admin')) {
return view('admin.users.index', ['users' => User::paginate(10)]);
}
dd('you need to be admin!');
}
index.blade.php :
#can('is-admin')
#foreach($users as $user)
<tr>
<th scope="row">{{ $user->user_id }}</th>
<td>{{ $user->name }}</td>
<td>{{ $user->email }}</td>
<td>{{ $user->created_at }}</td>
<td>{{ $user->updated_at }}</td>
<td>
<a class="btn btn-sm btn-primary" href="{{ route('admin.users.edit', $user->user_id) }}"
role="button">Bearbeiten</a>
<button type="button" class="btn btn-sm btn-danger"
onclick="event.preventDefault();
document.getElementById('delete-user-form-{{ $user->user_id }}').submit()">
Löschen
</button>
<form id="delete-user-form-{{ $user->user_id }}"
action="{{ route('admin.users.destroy', $user->user_id) }}" method="POST"
style="display: none">
#csrf
#method("DELETE")
</form>
</td>
</tr>
#endforeach
#endcan
Output :

Answer 1

So after a couple of days of debugging, I realized that my teams() method should be team() inside the User model as the user has only one team and BelongsTo relation will only return one record.
Credits: https://www.reddit.com/r/laravel/comments/ldvtgd/custom_admin_gate_not_working/
https://laracasts.com/discuss/channels/laravel/admin-gate-not-working?page=1#reply=687840
Here are the changes :
User.php
public function team()
{
return $this->belongsTo(Team::class);
}
/**
* Check if the user belongs to Admin Team
* #param string $team
* #return bool
*/
public function isAdmin(string $team)
{
return $this->team()->where('name', $team)->exists();
}
AuthServiceProvider.php
public function boot()
{
$this->registerPolicies();
Gate::define('is-admin', function (User $user){
return $user->isAdmin('Admin');
});
}
UserController.php
public function index()
{
if (Gate::allows('is-admin')) {
return view('admin.users.index', ['users' => User::paginate(10)]);
}
dd('you need to be admin!');
}