Question

我目前正在使用我的cakephp应用程序我有一个名为time的数据库，它有两个表：users and accounts。

users表包含EmployeeId和密码数据字段 accounts表还有EmployeeId，Password等..

现在，我想要发生的是每次我向用户表添加数据时，它会检查要保存的数据是否已经存在于帐户表中，如果不存在则会闪现错误，否则它将保存。

我怎么能在cakephp中这样做？这是代码：

add.ctp

public function add()
    {
        $user = $this->Users->newEntity();
        if ($this->request->is('post')) {
            $user = $this->Users->patchEntity($user, $this->request->data);
            if ($this->Users->save($user)) {
                $this->Flash->success(__('Logs has been saved.'));
                return $this->redirect(['action' => 'index']);
            } else {
                $this->Flash->error(__('The logs could not be saved. Please, try again.'));
            }
        }
        $this->set(compact('user'));
        $this->set('_serialize', ['user']);
    }

Answer 1

你可以通过这种方式解决它

在您的添加方法中，您可以使用您的请求数据检查Employid。

例如

if ($this->request->is('post')) {

            $employid = $this->request->data('employid');   //make sure your field name 

            $this->loadModel('Your Employ model');  // add your employ model 
            $check = $this->Employ->find('count')
                                  ->where(['Employ.employid' =>$employid ]);
            if($check!=0){
            $user = $this->Users->patchEntity($user, $this->request->data);
            if ($this->Users->save($user)) {
                $this->Flash->success(__('Logs has been saved.'));
                return $this->redirect(['action' => 'index']);
               } else {
                  $this->Flash->error(__('The logs could not be saved. Please, try again.'));
                }
            } 
           else 
           {
               echo "error message if not found";
           }

}

我认为你得到了逻辑。

Cakephp：在保存之前检查数据是否存在

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