weixin/app/Repositories/Criteria/Info/InformationCriteria.php

<?php

namespace App\Repositories\Criteria\Info;

use Illuminate\Http\Request;
use Prettus\Repository\Contracts\CriteriaInterface;
use Prettus\Repository\Contracts\RepositoryInterface;

class InformationCriteria implements CriteriaInterface
{
    /**
     * @var \Illuminate\Http\Request
     */
    protected $request;

    public function __construct(Request $request)
    {
        $this->request = $request;
    }

    /**
     * @param $model
     * @param RepositoryInterface $repository
     *
     * @return mixed
     */
    public function apply($model, RepositoryInterface $repository)
    {
        if ($this->request->filled('type_id')) {
            $type_id = $this->request->get('type_id');
            $model = $model->where('type_id', '=', $type_id);
        }

        if ($this->request->filled('title')) {
            $title = $this->request->get('title');
            $model = $model->where('title', 'like', "%{$title}%");
        }

        if ($this->request->filled('subtitle')) {
            $subtitle = $this->request->get('subtitle');
            $model = $model->where('subtitle', 'like', "%{$subtitle}%");
        }

        if ($this->request->filled('content')) {
            $content = $this->request->get('content');
            $model = $model->where('content', 'like', "%{$content}%");
        }
        $model = $model->orderBy('created_at', 'desc');

        return $model;
    }
}