<?php 
use Phalcon\Mvc\Model;

class Pumps extends Model
{
    
    public function initialize()
    {
        $this->belongsTo("location_id", "Locations", "id", ['alias' => 'location']);
        
        $this->hasManyToMany(
            'id',
            'WaterPumps',
            'pump_id', 'water_id',
            'Water',
            'id',
            ['alias' => 'water']
            );
    }
}

?>