lianjie_admin/app/Admin/Repositories/v3/Coupon.php

<?php

namespace App\Admin\Repositories\v3;

use App\Models\v3\Coupon as Model;
use Dcat\Admin\Grid\Model as GridModel;
use Dcat\Admin\Repositories\EloquentRepository;
use App\Models\v3\CouponUse as CouponUseModel;
use Illuminate\Support\Facades\DB;

class Coupon extends EloquentRepository
{
    /**
     * Model.
     *
     * @var string
     */
    protected $eloquentClass = Model::class;

    /**
     * 查询Grid表格数据.
     *
     * @param Grid\Model $model
     *
     * @return \Illuminate\Contracts\Pagination\LengthAwarePaginator|Collection|array
     */
    public function get(GridModel $model)
    {
        $this->setSort($model);
        $this->setPaginate($model);

        $query = $this->newQuery();

        if ($this->relations) {
            $query->with($this->relations);
        }

        $model->getQueries()->unique()->each(function ($value) use (&$query) {
            if ($value['method'] == 'paginate') {
                $value['arguments'][1] = $this->getGridColumns();
            } elseif ($value['method'] == 'get') {
                $value['arguments'] = [$this->getGridColumns()];
            }

            $query = call_user_func_array([$query, $value['method']], $value['arguments'] ?? []);
        });

        // dd(CouponUseModel::where('system_coupon_id',16)->sum('number'));
        // $u = DB::table('ims_system_coupon_user_use')->where('system_coupon_id',16)->count('number');
        // dd($u);
        // $list = $query->toArray();
        // foreach($list as &$value){
        //     // 查询使用数量
        //     $value['use_total'] = CouponUseModel::where('system_coupon_id',16)->count('number');
        //     dd( $value['use_total'] );
        // }
       
        return $query;
    }
}