Laravel - Check all instances of relationship for values on pivot table - php

Question

I have a two models that have a many-to-many relationship, with some addtional fields on the pivot table:
Shift table:
------------
id - uuid
date - date
address - string
...
Employee table:
---------------
id - uuid
first_name - string
...
shift_employee table:
---------------------
id - integer
shift_id - uuid
employee_id - uuid
hours_worked - integer
...
Now, I'm making a Lens in Laravel Nova, and I want to use the query object to check if any of the instances on shift_employee related to a specific shift has a value bigger than 0 for hours_worked on the shift_employee table.
My first idea is to somehow use whereHas assuming that the Shift model has a relationship employees, like this:
$query->whereHas('employees' function ($q) {
$q->where('hours_worked', '>', 0);
});
But... this is not working... There are shifts with more than 0 hours_worked for certain employees and this query string is not working for me. How would I do this?

Answer 1

First make sure your models are modeled correctly. If they are, you can access any attribute of an intermediate table with the pivot attribute as below:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Role extends Model
{
/**
* The users that belong to the role.
*/
public function users()
{
return $this->belongsToMany('App\User');
}
}
exemple :
$user = App\User::find(1);
foreach ($user->roles as $role) {
echo $role->pivot->created_at;
}
In your case, try :
$employee = Employee::with('Shift');
foreach($employee as $e){
$employeeHw[] = $e->shift_employee->where('hours_worked', '>', 0)->get();
}
I'm also new to laverel, so I'm not absolutely sure it works, but in theory: P
Usually in these cases I use the query bilder with join which I find easier
$users = DB::table('users')
->join('contacts', 'users.id', '=', 'contacts.user_id')
->join('orders', 'users.id', '=', 'orders.user_id')
->select('users.*', 'contacts.phone', 'orders.price')
->get();