初始化项目

app/Http/Controllers/Member/CartController.php

@@ -0,0 +1,151 @@
+<?php
+
+namespace App\Http\Controllers\Member;
+
+use App\Models\Cart;
+use App\Models\YiiModels\Drug;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+/**
+ * 购物车
+ */
+class CartController extends MemberBaseController
+{
+    /**
+     * 添加购物车
+     *
+     * @return void
+     */
+    public function cartAdd()
+    {
+        $input = $this->toValidator([
+            'drug_id' => 'required|integer',
+            'change_qty' => 'nullable|integer',
+            'true_qty' => 'nullable|integer',
+        ], [], [
+            'drug_id' => '商品',
+            'change_qty' => '数量',
+            'true_qty' => '数量',
+        ], true);
+
+        if (!$input['change_qty'] && !$input['true_qty']) {
+            json_error('商品数量不正确');
+        }
+
+        /* @var Drug $drug */
+        $drug = Drug::with([
+            'drugStoreRelation' => function (Relation $relation) {
+                $relation->select(['drug_id', 'total_sales_volume', 'status'])
+                    ->where('store_id', $this->getStoreId());
+            },
+            'drugstoreDrug' => function (Relation $relation) {
+                $relation->select(['drug_id', 'price', 'stock'])
+                    ->where('drugstore_id', $this->getDrugstoreId());
+            },
+        ])
+            ->select([
+                'id', 'status',
+            ])
+            ->whereHasIn('drugStoreRelation', function (Builder $builder) {
+                $builder->where('store_id', $this->getStoreId());
+            })
+            ->where('id', $input['drug_id'])
+            ->first();
+        if (!$drug && !$drug->drugStoreRelation && !$drug->drugstoreDrug) {
+            json_error('商品不存在');
+        }
+        if ($drug->status != Drug::STATUS_ON || $drug->drugStoreRelation->status != Drug::STATUS_ON) {
+            json_error('商品已下架');
+        }
+        $cart = $this->user()->carts()->firstOrCreate([
+            'drug_id' => $input['drug_id'],
+            'store_id' => $this->getStoreId(),
+        ]);
+        if ($input['change_qty']) {
+            if ($input['change_qty'] > $drug->drugstoreDrug->stock) {
+                json_error("库存不足，最多可加入{$drug->drugstoreDrug->stock}个");
+            }
+            $cart->increment('qty', $input['change_qty'], ['join_at' => now()]);
+            if ($cart->qty <= 0) {
+                $cart->delete();
+                json_success('购物车商品已删除');
+            }
+        } else {
+            if (($input['true_qty'] - $cart['qty']) > $drug->drugstoreDrug->stock) {
+                json_error("库存不足，最多可加入{$drug->drugstoreDrug->stock}个");
+            }
+            $cart->update([
+                'qty' => $input['true_qty'],
+                'join_at' => now(),
+            ]);
+            if ($cart->qty <= 0) {
+                $cart->delete();
+                json_success('购物车商品已删除');
+            }
+        }
+        json_success('已加入购物车');
+    }
+
+    /**
+     * 清空购物车
+     *
+     * @return void
+     */
+    public function clearAll()
+    {
+        Cart::where('store_id', $this->getStoreId())
+            ->where('user_id', $this->userId())
+            ->delete();
+        json_success('已清空购物车');
+    }
+
+    /**
+     * 购物车列表
+     *
+     * @return void
+     */
+    public function cartLists()
+    {
+        $carts = Cart::with([
+            'drug' => function (Relation $relation) {
+                $relation->with([
+                    'drugStoreRelation' => function (Relation $relation) {
+                        $relation->select(['drug_id', 'total_sales_volume', 'status'])
+                            ->where('store_id', $this->getStoreId());
+                    },
+                    'drugstoreDrug' => function (Relation $relation) {
+                        $relation->select(['drug_id', 'price', 'stock'])
+                            ->where('drugstore_id', $this->getDrugstoreId());
+                    },
+                ])
+                    ->select(['id', 'drug_name', 'source', 'type', 'is_otc', 'small_info', 'usage', 'specification', 'image', 'status']);
+            }
+        ])
+            ->whereHasIn('drug')
+            ->where('store_id', $this->getStoreId())
+            ->where('user_id', $this->userId())
+            ->orderByDesc('join_at')
+            ->get();
+
+        $valid = $invalid = [];
+        /* @var Cart $cart */
+        foreach ($carts as $cart) {
+            if (!$cart->drug || !$cart->drug->drugStoreRelation || !$cart->drug->drugstoreDrug) {
+                $invalid[] = $cart;
+                continue;
+            }
+            if ($cart->drug->status != Drug::STATUS_ON || $cart->drug->drugStoreRelation->status != Drug::STATUS_ON) {
+                $invalid[] = $cart;
+                continue;
+            }
+            $valid[] = $cart;
+        }
+
+        json_success([
+            'store_name' => $this->getStore()->name,
+            'valid' => $valid,
+            'invalid' => $invalid,
+        ]);
+    }
+}