初始化项目：添加后端代码、ThinkPHP框架、前端资源

application/api/controller/app/exchange/Code.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace app\api\controller\app\exchange;
+
+use app\common\controller\Api;
+
+/**
+ * 兑换码
+ */
+class Code extends Api
+{
+
+    protected $noNeedLogin = [];
+    // 无需鉴权的接口,*表示全部
+    protected $noNeedRight = ['*'];
+
+    protected $model;
+
+    public function _initialize()
+    {
+        parent::_initialize();
+
+        $this->model = new \app\api\model\app\exchange\Code;
+
+        $this->batchModel = new \app\api\model\app\exchange\Batch;
+        $this->goodsModel = new \app\api\model\app\exchange\Goods;
+    }
+
+    /**
+     * 兑换
+     * @return void
+     */
+    public function exchange(){
+        $code = $this->request->post('code');
+
+        //判断code是否可用
+        $codeInfo = $this->model->checkCode($code);
+        if(!$codeInfo){
+            $this->error("该兑换码暂不可用");
+        }
+
+        if(!$this->batchModel->checkLimit($this->auth->id,$codeInfo['batch_id'])){
+            $this->error("已超出兑换次数限制");
+        }
+
+        //发放权益
+
+        $this->model->exchange($this->auth->id,$codeInfo['batch_id'],$code);
+
+        $this->success("兑换成功,可在我的订阅中查看兑换的课程");
+    }
+
+}

application/api/controller/app/exchange/UseLog.php

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+<?php
+
+namespace app\api\controller\app\exchange;
+
+use app\common\controller\Api;
+
+/**
+ * 兑换记录
+ */
+class UseLog extends Api
+{
+
+    protected $noNeedLogin = [];
+    // 无需鉴权的接口,*表示全部
+    protected $noNeedRight = ['*'];
+
+    protected $model;
+
+    public function _initialize()
+    {
+        parent::_initialize();
+
+        $this->model = new \app\api\model\app\exchange\UseLog;
+    }
+
+    /**
+     * 查看
+     */
+    public function getLog()
+    {
+        $limit = input('limit',10);
+        $page = input('page',1);
+
+        $where = [
+            'user_id'=>$this->auth->id
+        ];
+        $list = $this->model
+            ->with(['batch','course'])
+            ->where($where)
+            ->limit($limit)
+            ->page($page)
+            ->order('createtime','desc')
+            ->select();
+
+        if(!empty($list)){
+            foreach ($list as $item){
+                $item->batch->visible(['name']);
+                $item->course->visible(['name','type']);
+            }
+        }
+
+        $this->success('获取成功', $list);
+    }
+}