Change Laravel Relationship Output Structure - laravel

Question

I'm using Laravel 5.2 and I have Role and Permission models with
Role.php
public function permissions()
{
return $this->hasMany('App\Permissions');
}
And if I call
return Role::with('permissions')->get()
it will return
[{
"id": 2,
"name": "training_vendor",
"display_name": "Training Vendor",
"description": "Role for vendor",
"created_at": "2016-06-23 08:05:47",
"updated_at": "2016-06-23 08:05:47",
"permissions": [
{
"permission_id": 1,
"role_id": 2
},
{
"permission_id": 2,
"role_id": 2
},
{
"permission_id": 3,
"role_id": 2
},
{
"permission_id": 4,
"role_id": 2
},
{
"permission_id": 5,
"role_id": 2
}
}]
Is it possible to change the "permissions" structure to something like these?
[{
"id": 2,
"name": "training_vendor",
"display_name": "Training Vendor",
"description": "Role for vendor",
"created_at": "2016-06-23 08:05:47",
"updated_at": "2016-06-23 08:05:47",
"permissions": [1,2,3,4,5]
}]

Answer 1

If you want to get an array (as title says), use toArray() method:
return Role::with('permissions')->get()->toArray();
It will convert the collection to an array.
If you need to get custom formatted JSON (as your example shows), use toArray(), then rebuild this array with using foreach or array_map()/array_filter() methods and encode result into JSON with json_encode().
I would recommend you to send data as is (without rebuilding it's structure) to frontend or whatever and work with it there.

Answer 2

I order to extract a Collection of permission IDs you can use the pluck() function:
$permissionIds = $role->permissions->pluck('permission_id');
You can also write a getter function in your Role model:
public function getPermissionIds()
{
return $this->permissions->pluck('permission_id');
}
and use it like:
$permissionIds = $role->getPermissionIds();
You can even override the magic __get() function:
public function __get($attr)
{
if ($attr === 'permissionIds') {
return $this->getPermissionIds();
} else {
return parent::__get($attr);
}
}
and access the permission IDs like an attribute:
$permissionIds = $role->permissionIds;

Answer 3

In Laravel 5.2 the returned value of models is a Collection instance which can be used to transform the result
$roles = Role::with('permissions')->get();
$roles->transform(function($role){
$role['permissions'] = $role['permissions']->pluck('permission_id')->toArray();
return $role;
});
return $roles;
This code will provide the desirable result.
Note: You can even chain the transform function after the get function.

Answer 4

I hope this answer will help to you,
$role = Role::all();
foreach ($role as $index){
$permissions= $index->permissions;
foreach ($permissions as $permission){
$permissionId[] = $permission->permission_id;
}
unset($index->permissions);
$index['all_permissions']= $permissionId;
}
return response()->json($role, 200);
This is work for me. So check for your code.