Laravel Relationship Find UUID - laravel

Question

I have make a Trait for UUID. I use a lot of relationschip inside my code. On a relationship you can do find() and findOrFail() but i have write a code for findU() and findUOrFail() but i can't use it inside a relationship. How can i fix it?
Trait:
<?php
namespace App\Modules\Base\Traits;
use Ramsey\Uuid\Uuid;
/**
* Trait Uuids
*
* #package Modules\Core\Traits
*/
trait Uuids
{
/**
* Boot function from laravel.
*/
public static function bootUuids ()
{
static::creating(function ($model) {
$model->uuid = Uuid::uuid4()->toString();
});
}
/**
* #param $uuid
*
* #return mixed
*/
public static function findU ($uuid)
{
return static::where('uuid', '=', $uuid)->first();
}
/**
* #param $uuid
*
* #return mixed
*/
public static function findUOrFail($uuid)
{
$post = static::where('uuid', '=', $uuid)->first();
if( is_null($post) ) {
return abort(404);
} else {
return $post;
}
}
}
Controller:
/**
* Show
*/
public function show(Request $request, $uuid)
{
return responder()->success($request->user()->projects()->findUOrFail($uuid))->respond();
}
Error:
Call to undefined method Illuminate\\Database\\Eloquent\\Relations\\BelongsToMany::findUOrFail()

Answer 1

Assuming you don't need id since you're using uuid
In your migration file you need:
$table->uuid('uuid');
$table->primary('uuid');
In your model:
use Uuids;
protected $primaryKey = 'uuid';
public $incrementing = false;
Or much easier
In your migration file:
$table->uuid('id');
$table->primary('id');
In your model:
use Uuids;
public $incrementing = false;
You don't need to override findOrFail or find

Answer 2

It should help to have the function referenced directly in the model rather than trying to access it directly in a trait. I am assuming that you are including the Uuids trait above in your projects model. If so, try creating a method on the projects model like this:
public function tryFindUOrFail($uuid)
{
return $this->findUOrFail($uuid);
}
Then you would write your show method as:
return responder()->success($request->user()->projects()->tryFindUOrFail($uuid))->respond();
If this doesn't work, you may need to include your method with the $appends array so that it is directly accessible through the relationship.