更新 cakephp 中的多个表

Question

我想知道这个函数有什么问题，我只需要更新表中的一个字段或多个关联表中的所有字段。 多重更新工作正常，但是当我只更新第一列时，它对我来说不能正常工作

public function edit($id) {
    $contractor = $this->Contractors->get($id);

     $associated = ['ContractorsAttachments' ];
    // Used to get the all attachments associated with Contractors 
     $ContractorsAttachments = $this->Contractors->ContractorsAttachments->find()->where(['contractor_id' => $id])->all();
    if ($this->request->is(['patch', 'post', 'put'])) {
      $contractor = $this->Contractors->patchEntity($contractor, $this->request->data );

       if ($this->Contractors->save($contractor)) {

            $this->Flash->success(__('The Contractors has been saved.'));

            return $this->redirect(['action' => 'index']);
        }
        $this->Flash->error(__('The Contractors could not be saved. Please, try again.'));
    }
    $this->set(compact('contractor','ContractorsAttachments'));
    $this->set('_serialize', ['contractor']);
    $this->render('add');
    }

Answer 1

您可以使用contain 获取关联的模型数据。

使用Saving With Associations

调整后你的代码会是这样的

     $contractor = $this->Contractors->get($id, ['contain'=>'ContractorsAttachments']);

     if ($this->request->is(['patch', 'post', 'put'])) {
       $contractor = $this->Contractors->patchEntity($contractor, $this->request->data );

       if ($this->Contractors->save($contractor,['associated' => ['ContractorsAttachments']])) {

            $this->Flash->success(__('The Contractors has been saved.'));

            return $this->redirect(['action' => 'index']);
        }
        $this->Flash->error(__('The Contractors could not be saved. Please, try again.'));
    }

同时验证您的 Contractors 模型具有这样定义的关联

        $this->hasMany('ContractorsAttachments', [
            'foreignKey' => 'contractor_id'
        ]);

希望这会有所帮助:)