<?php 
use Phalcon\Mvc\Model;

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

?>