Laravel custom collection or custom query builder? - php

Question

I have that project that have orders that have status, and every status can be seen depending on if the user have the permission to manage it. I've tried to use custom collection but the downside is it's not paginatiable by default,
here's the code
class OrdersCollection extends Collection
{
public function allowedForUser(User $user)
{
return $this->filter(function ($order) use ($user) {
return $user->can(sprintf('manage %s orders', strtolower($order->status)));
});
}
}
here's how I'm trying to use it
$orders = Order::withoutTrashed()
->allowedForUser(Auth::user())
->paginate(50);
EDIT:
to avoid filtering through 20k+ rows in the table I came up with this custom builder
class OrderBuilder extends Builder
{
public function WhereAllowedForUser(User $user)
{
$permissions = $user->permissions()
->where('name', 'like', 'manage % orders')
->pluck('name')
->map(function ($item) {
return str_replace('manage ', '', str_replace(' orders', '', $item));
});
return $this->whereIn('status', $permissions);
}
}

Answer 1

You have to use scoped queries for your Model.
The idea is for you to pass a value to the scope and do what you want/need with it:
class Order extends Model
{
public function scopeWhereAllowedForUser($query, User $user)
{
$permissions = $user->permissions()
->where('name', 'like', 'manage % orders')
->pluck('name')
->map(function ($item) {
return str_replace('manage ', '', str_replace(' orders', '', $item));
});
return $query->whereIn('status', $permissions);
}
}
So you use it like this:
$orders = Order::whereAllowedForUser(Auth::user())->paginate(50);
I am not 100% sure what you are trying to do with that $permissions query, I am not sure what you tried to do, so explain it a little more and I can help you with it (better code).