update multi tables in cakephp - php

Question

I'm trying to know what's the wrong with this function , which i need to update only one field in table or the all fields in multi assocatied tables .
The multi update is working fine , but when i going to update only the first column it's not working fine with me
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

You can get associated model data using contain.
Use Saving With Associations
After the tweaks your code will be like this
$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.'));
}
Also verify that you Contractors Model has the association defined like this
$this->hasMany('ContractorsAttachments', [
'foreignKey' => 'contractor_id'
]);
Hope this will help :)