furniture/app/Http/Controllers/Api/V1/CarController.php

<?php

namespace App\Http\Controllers\Api\V1;

use App\Models\S1CartInfoModel;
use App\Models\S1GoodsInfoModel;
use App\Services\Base\ErrorCode;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Validator;

class CarController extends Controller
{
    /**
     * @api {get} /api/car/index 购物车
     * @apiDescription 购物车
     * @apiGroup Car
     * @apiParam {string}   appid          appid
     * @apiPermission none
     * @apiVersion 0.1.0
     * @apiSuccessExample {json} Success-Response:
     *  HTTP/1.1 200 OK
     * {
        "status": true,
        "status_code": 0,
        "message": "",
        "data": {
            "current_page": 1,
            "data": [
                {
                    "id": 1,
                    "goods_num": 2,                    加入购物车商品的数量
                    "created_at": null,
                    "goods": {
                        "name": "商品1",
                        "pic": "/upload/s1/goods/face/20171013/effbecdc6d9de83d0128e3f08ec6d636.jpg",
                        "status": 1,
                        "price": 101100,              商品价格(分)
                        "sale_number": 91,            已售数量
                        "stock": 200,                 总库存
                    }
                },
            ],
            "first_page_url": "http://www.s1.com/api/car/index?page=1",
            "from": 1,
            "last_page": 1,
            "last_page_url": "http://www.s1.com/api/car/index?page=1",
            "next_page_url": null,
            "path": "http://www.s1.com/api/car/index",
            "per_page": 15,
            "prev_page_url": null,
            "to": 2,
            "total": 2
        }
    }
     * @apiErrorExample {json} Error-Response:
     * HTTP/1.1 400 Bad Request
     */
    public function index(Request $request)
    {
        $user = \Auth::guard('api')->user();
        if (!$user) return $this->error(ErrorCode::ERROR_POWER);
        $validator = Validator::make($request->all(),
            [
                'appid' => 'required',
            ],
            [
                'appid.required' => 'appid不存在',
            ]
        );

        if ($validator->fails()) {
            return $this->validatorError($validator->messages()->all(), ErrorCode::CLIENT_WRONG_PARAMS);
        }
        $appid = $request->input('appid');
        $goods = S1CartInfoModel::where('appid',$appid)->where('wx_user_id',$user->id)->with('goods')->orderBy('created_at','desc')->paginate();
        return $this->api($goods);
    }

    /**
     * @api {post} /api/car/update 编辑
     * @apiDescription 编辑(修改购物车商品数量)
     * @apiGroup Car
     * @apiParam {int}   id          商品id
     * @apiParam {int}   number       购买数量
     * @apiPermission none
     * @apiVersion 0.1.0
     * @apiSuccessExample {json} Success-Response:
     *  HTTP/1.1 200 OK
     * {
        "status": true,
        "status_code": 0,
        "message": "",
        "data": 2005
    }
     * @apiErrorExample {json} Error-Response:
     * HTTP/1.1 400 Bad Request
     */
    public function update(Request $request)
    {
        $user = \Auth::guard('api')->user();
        if (!$user) return $this->error(ErrorCode::ERROR_POWER);
        $validator = Validator::make($request->all(),
            [
                'id'         => 'required',
                'number'         => 'required',
            ],
            [
                'id.required'        => '商品不存在',
                'number.required'        => '购买数量不能为空',
            ]
        );
        if ($validator->fails()) {
            return $this->validatorError($validator->messages()->all(),ErrorCode::CLIENT_WRONG_PARAMS);
        }
        $id = $request->input('id');
        $number = $request->input('number');
//        检查购买数量是否大于库存量剩余量
        $goods = S1GoodsInfoModel::find($id);
        if (empty($goods)) return $this->error(ErrorCode::GOODS_NOT_EXIST);
        $stock = $goods->stock - $goods->sale_number;
        if($number>$stock) return $this->error(ErrorCode::GOODS_MAX);
        if($number<1) return $this->error(ErrorCode::GOODS_MIN);
        $cat_goods = S1CartInfoModel::where('wx_user_id',$user->id)->where('s1_goods_id',$id)->first();
        if(empty($cat_goods)) return $this->error(ErrorCode::CAT_ERROR);
        $cat_goods->goods_num = $number;
        $ok = $cat_goods->save();
        if($ok) return $this->api(ErrorCode::OP_SUCCESS);
        return $this->error(ErrorCode::OP_ERROR);
    }

    /**
     * @api {get} /api/car/delete 删除
     * @apiDescription   删除
     * @apiGroup Car
     * @apiParam {int}   ids          主键id 数组
     * @apiPermission none
     * @apiVersion 0.1.0
     * @apiSuccessExample {json} Success-Response:
     *  HTTP/1.1 200 OK
     {
        "status": true,
        "status_code": 0,
        "message": "",
        "data": 2005
     }
     * @apiErrorExample {json} Error-Response:
     * HTTP/1.1 400 Bad Request
     */
    public function delete(Request $request)
    {
        $user = \Auth::guard('api')->user();
        if (!$user) return $this->error(ErrorCode::ERROR_POWER);
        $validator = Validator::make($request->all(),
            [
                'ids'         => 'required',
            ],
            [
                'ids.required'        => '主键id数组不存在',
            ]
        );
        if ($validator->fails()) {
            return $this->validatorError($validator->messages()->all(),ErrorCode::CLIENT_WRONG_PARAMS);
        }
        $ids = $request->input('ids');
        $ids = json_decode($ids,true); //对JSON格式的字符串进行编码
        $ok = S1CartInfoModel::destroy($ids);
        if($ok) return $this->api('');
        return $this->error(ErrorCode::OP_ERROR);
    }
}