修改根据id增删改查购物车

manage-server/app/Http/Controllers/ShopcarController.php

         $product_id = $request->input("product_id");
         $wechat_id = $request->header("openid");
         $amount = $request->input("product_amount");
+        $id = $request->input("id");
 
-        if($product_id) {
+        if(!$product_id) {
+            return response()->json([
+                "status" => -1,
+                "error" => "请输入产品ID"
+            ]);
+        }
+        if($id) {
+            $shopcar = Shopcar::find($id);
+        } else {
             $shopcar = Shopcar::where("wechat_id", $wechat_id)->where("product_id", $product_id)->first();
             if(!$shopcar) {
                 $shopcar = new Shopcar;
-                $shopcar->wechat_id = $wechat_id;
-                $shopcar->product_id = $product_id;
-            }
-            if($amount) {
-                $shopcar->product_amount = $amount;
-            } else {
-                $shopcar->product_amount = $shopcar->product_amount + 1;
             }
+        }
 
-            $shopcar->save();
-            return response()->json([
-                "status" => 0,
-                "message" => "已加入购物车！"
-            ]);
+        $shopcar->wechat_id = $wechat_id;
+        $shopcar->product_id = $product_id;
+        if($amount) {
+            $shopcar->product_amount = $amount;
         } else {
-            return response()->json([
-                "status" => -1,
-                "error" => "请输入产品ID"
-            ]);
+            $shopcar->product_amount = $shopcar->product_amount + 1;
         }
+        $shopcar->save();
+        return response()->json([
+            "status" => 0,
+            "message" => "已加入购物车！"
+        ]);
+
     }
 
     /**
     public function pstore(Request $request) {
 
         $wechat_id = $request->header("openid");
-        $jsonStr = $request->getContent();
-        foreach(json_decode($jsonStr, true) as $data){
-            $id = $data["id"];
-            $amount = $data["amount"];
-            $shopcar = Shopcar::where("wechat_id", $wechat_id)->where("product_id", $id)->first();
-            if(!$shopcar) {
-                $shopcar = new Shopcar;
-                $shopcar->wechat_id = $wechat_id;
-                $shopcar->product_id = $id;
+        $products_prices = $request->input("data");
+        foreach($products_prices as $data){
+            if(isset($data["id"])) {
+                $id = $data["id"];
             }
+            $product_id = $data["product_id"];
+            $amount = $data["product_amount"];
+            if(isset($id)) {
+                $shopcar = Shopcar::find($id);
+            } else {
+                $shopcar = Shopcar::where("wechat_id", $wechat_id)->where("product_id", $product_id)->first();
+                if(!$shopcar) {
+                    $shopcar = new Shopcar;
+                }
+            }
+            $shopcar->wechat_id = $wechat_id;
+            $shopcar->product_id = $product_id;
             $shopcar->product_amount = $amount;
 
             $shopcar->save();
      * @return mixed
      */
     public function amount(Request $request) {
+        $id = $request->input("id");
         $product_id = $request->input("product_id");
         $wechat_id = $request->header("openid");
         $amount = $request->input("product_amount");
+        if($id) {
+            if($amount) {
+                $shopcar = Shopcar::find($id);
+                if($shopcar) {
+                    $shopcar->product_amount = $amount;
+                    $shopcar->save();
 
-        if($product_id && $amount) {
-            $shopcar = Shopcar::where("wechat_id", $wechat_id)->where("product_id", $product_id)->first();
-            if($shopcar) {
-                $shopcar->product_amount = $amount;
-                $shopcar->save();
-
+                    return response()->json([
+                        "status" => 0,
+                        "message" => "修改成功！"
+                    ]);
+                }
+            } else {
                 return response()->json([
-                    "status" => 0,
-                    "message" => "修改成功！"
+                    "status" => -1,
+                    "error" => "请输入产品数量"
                 ]);
             }
+
         } else {
-            return response()->json([
-                "status" => -1,
-                "error" => "请输入产品ID和数量"
-            ]);
+            if($product_id && $amount) {
+                $shopcar = Shopcar::where("wechat_id", $wechat_id)->where("product_id", $product_id)->first();
+                if($shopcar) {
+                    $shopcar->product_amount = $amount;
+                    $shopcar->save();
+
+                    return response()->json([
+                        "status" => 0,
+                        "message" => "修改成功！"
+                    ]);
+                }
+            } else {
+                return response()->json([
+                    "status" => -1,
+                    "error" => "请输入产品ID和数量"
+                ]);
+            }
         }
+
     }
 
     /**
      * @return mixed
      */
     public function delete(Request $request, $id) {
-        $product_id = $request->route("id");
+        $id = $request->route("id");
         $wechat_id = $request->header("openid");
 
-        if($product_id) {
-            $shopcar = Shopcar::where("wechat_id", $wechat_id)->where("product_id", $product_id)->first();
+        if($id) {
+            $shopcar = Shopcar::find($id);
             if($shopcar) {
                 $shopcar->delete();
                 return response()->json([
         } else {
             return response()->json([
                 "status" => -1,
-                "error" => "请输入产品ID"
+                "error" => "请输入ID"
             ]);
         }
     }
 
         if($ids) {
             foreach ($ids as $id) {
-                $shopcar = Shopcar::where("wechat_id", $wechat_id)->where("product_id", $id)->first();
+                $shopcar = Shopcar::find($id);
                 if($shopcar) {
                     $shopcar->delete();
                 }