后台功能修改

+<?php
+
+namespace app\admin\controller;
+
+use app\common\controller\Backend;
+use think\Db;
+
+/**
+ * 活动和学校组成校区
+ *
+ * @icon fa fa-circle-o
+ */
+class Campus extends Backend
+{
+
+    /**
+     * Campus模型对象
+     * @var \app\admin\model\Campus
+     */
+    protected $model = null;
+
+    public function _initialize()
+    {
+        parent::_initialize();
+        $this->model = new \app\admin\model\Campus;
+
+    }
+
+
+
+    /**
+     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
+     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
+     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
+     */
+
+
+    /**
+     * 查看
+     */
+    public function index()
+    {
+        //当前是否为关联查询
+        $this->relationSearch = true;
+        //设置过滤方法
+        $this->request->filter(['strip_tags', 'trim']);
+        if ($this->request->isAjax()) {
+            //如果发送的来源是Selectpage，则转发到Selectpage
+            if ($this->request->request('keyField')) {
+                return $this->selectpage();
+            }
+            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
+
+            $list = $this->model
+                    ->with(['school','activity'])
+                    ->where($where)
+                    ->order($sort, $order)
+                    ->paginate($limit);
+
+            foreach ($list as $row) {
+                $row->visible(['id','title','school_id','activity_id','date']);
+                $row->visible(['school']);
+				$row->getRelation('school')->visible(['title']);
+				$row->visible(['activity']);
+				$row->getRelation('activity')->visible(['title']);
+            }
+
+            $result = array("total" => $list->total(), "rows" => $list->items());
+
+            return json($result);
+        }
+        return $this->view->fetch();
+    }
+
+    /**
+     * 添加
+     *
+     * @return string
+     * @throws \think\Exception
+     */
+    public function add()
+    {
+        if (false === $this->request->isPost()) {
+            return $this->view->fetch();
+        }
+        $params = $this->request->post('row/a');
+        if (empty($params)) {
+            $this->error(__('Parameter %s can not be empty', ''));
+        }
+        $params = $this->preExcludeFields($params);
+
+        if ($this->dataLimit && $this->dataLimitFieldAutoFill) {
+            $params[$this->dataLimitField] = $this->auth->id;
+        }
+        $result = false;
+        Db::startTrans();
+        try {
+            //是否采用模型验证
+            if ($this->modelValidate) {
+                $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
+                $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : $name) : $this->modelValidate;
+                $this->model->validateFailException()->validate($validate);
+            }
+            $result = $this->model->allowField(true)->save($params);
+            $id  = $this->model->id;
+            $school_id = $this->model->school_id;
+            $activity_id = $this->model->activity_id;
+            $school_title = \db('school')->where('id',$school_id)->value('title');
+            $activity_title = \db('activity')->where('id',$activity_id)->value('title');
+            $date = $this->model->date;
+            $title = $date.$school_title.$activity_title;
+            $this->model->save(['title'=>$title],['id'=>$id]);
+            Db::commit();
+        } catch (ValidateException|PDOException|Exception $e) {
+            Db::rollback();
+            $this->error($e->getMessage());
+        }
+        if ($result === false) {
+            $this->error(__('No rows were inserted'));
+        }
+        $this->success();
+    }
+
+}