hide action button if roles have relationship with users - php

Question

Hi I am working on Role Based authentication in Laravel and every thing works fine but I have problem in Role section.
I want to hide action buttons like Edit and Delete from my Roles List Page those roles which have been assigned to users can't be delete but other roles which haven't assigned to user yet can be deleted.
Role Migration
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
class CreateRolesTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('roles', function (Blueprint $table) {
$table->id();
$table->string('role_typ');
$table->string('role_name');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::dropIfExists('roles');
}
}
User migration
class AddColumnsToUsersTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::table('users', function (Blueprint $table) {
$table->unsignedBigInteger('role_id');
$table->foreign('role_id')->references('id')->on('roles');
});
}
user model
public function role()
{
return $this->belongsTo(Role::class, 'role_id');
}
Role Controller
// Role Management
public function Rolelist()
{
$roles = Role::paginate(10);
return view('admin.roles', compact('roles'));
}
Role list blade page
<div class="card">
<div class="card-header">
<h3 class="card-title">All Role List</h3>
<div class="card-tools">
<a href="{{ route('roleform') }}" class="btn btn-block btn-success btn-sm">Add Role <i
class="fas fa-user-plus"></i></a>
</div>
</div>
<!-- /.card-header -->
<div class="card-body table-responsive p-0">
<table class="table table-hover text-nowrap">
<thead>
<tr>
<th>ID</th>
<th>Role Name</th>
<th>Role Type</th>
<th>Created</th>
<th>Action</th>
</tr>
</thead>
<tbody>
#foreach ($roles as $role)
<tr>
<td>{{ $role->id }}</td>
<td>{{ $role->role_name }}</td>
<td>{{ $role->role_typ }}</td>
<td> {{ \Carbon\Carbon::createFromTimeStamp(strtotime($role->created_at))->diffForHumans() }}
</td>
</tr>
#endforeach
</tbody>
</table>
</div>

Answer 1

In the Role model you should have users method which contains HasMany relationship to User model. After that when you get the roles you should use Role::withCount('users');
Then in the blade file you can use $role->users_count to check how many users you have attached to this role.
https://laravel.com/docs/8.x/eloquent-relationships#counting-related-models