Abstract Layer for Query Filters in Laravel

Filterable.php

<?php

namespace App\Filters\Query;

trait Filterable
{
    /**
     * Apply Filters on the Eloquent Model
     *
     * @param $query
     * @param QueryFilter $filters
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeFilter($query, QueryFilter $filters)
    {
        return $filters->apply($query);
    }
}

QueryFilter.php

<?php

namespace App\Filters\Query;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;

abstract class QueryFilter
{

    protected $request;
    protected $builder;


    /**
     * QueryFilter constructor.
     *
     * @param Request $request
     */
    public function __construct(Request $request)
    {
        $this->request = $request;
    }

    /**
     * Apply filters in request on resource if they are implemented in the resourceFilters class
     *
     * @param Builder $builder
     * @return Builder
     */
    public function apply(Builder $builder)
    {
        $this->builder = $builder;

        foreach ($this->filters() as $name => $value) {
            if (! method_exists($this, $name)) {
                continue;
            }

            if(strlen($value)) {
                $this->$name($value);
            } else {
                $this->$name();
            }
        }

        return $this->builder;
    }

    /**
     * Get filters from the request
     *
     * @return array
     */
    public function filters()
    {
        return $this->request->all();
    }
    
}