Question

根据Cakephp命名约定，我有2个表“ Descriptions”和“ Phases”，使用联接表“ DescriptionsPhases”与BelongsToMany关联。我现在一直在为此苦苦挣扎：现在我只是无法让控制器将 description 和 phase 的ID保存到我的联接表中，该表基本上只有3列，即id / description_id / phase_id。元数据可能还会更多。

这是我的代码结构：

在说明表中：

$this->belongsToMany('Phases', [
        'foreignKey' => 'description_id',
        'targetForeignKey' => 'phase_id',
        'through' => 'DescriptionsPhases',
        'saveStrategy' => 'append'
    ]);

在“阶段”表中：

$this->belongsToMany('Descriptions', [
        'foreignKey' => 'phase_id',
        'targetForeignKey' => 'description_id',
        'through' => 'DescriptionsPhases'
    ]);

在“描述阶段”表中：

$this->belongsTo('Descriptions', [
        'foreignKey' => 'description_id',
        'joinType' => 'INNER'
    ]);
    $this->belongsTo('Phases', [
        'foreignKey' => 'phases_id',
        'joinType' => 'INNER'
    ]);

在以上所有3个实体中（目前）：

protected $_accessible = [
    '*' => true
];

在“描述控制器”中，使用add（）方法。 $ descriptions-> phases的ID现在已经硬编码，只是为了降低复杂性：

public function add() {

    $description = $this->Descriptions->newEntity([
            'associated' => ['Phases']]);

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

        // additional data to be saved in new description
        $description->user_id = $this->Auth->user('id');
        $description->designvariant = 666;

        // Hardcoded integer TO BE SAVED in associated model (via join table)
        $description->phases = [['id' => 5]]; 

        $patch = $this->Descriptions->patchEntity($description, $this->request->getData(), [
            'associated' => ['Phases']]);
        debug($patch);


        $save = $this->Descriptions->save($patch);
        debug($save);


        if ($save) {
            $this->Flash->success(__('The description has been saved.'));

            return $this->redirect(['action' => 'index']);

        }

    $this->Flash->error(__('The description could not be saved. Please, try again.'));
    }

    // pass arrays for dropdown menus
    $this->set('trades', ($this->Descriptions->Trades->listLabels()));
    $this->set('elements', ($this->Descriptions->Elements->listLabels()));
    $this->set('allocations', ($this->Descriptions->Allocations->listLabels()));

    $this->set(compact('description'));
    $this->render();
}

我在patchEntity和saveEntity之后都进行了调试，并获得了此数据结构。

调试（$ patch）;

object(App\Model\Entity\Description) {

'associated' => [
    (int) 0 => 'Phases'
],
'user_id' => (int) 1,
'designvariant' => (int) 666,
'phases' => [
    (int) 0 => [
        'id' => (int) 5
    ]
],
'element_id' => 'A',
'shorttext' => 'title',
'longtext' => 'text',
'trade_id' => '0',
'allocation_id' => 'BMST',
'[new]' => true,
'[accessible]' => [
    'trade_id' => true,
    'element_id' => true,
    'allocation_id' => true,
    'shorttext' => true,
    'longtext' => true,
    'designvariant_id' => true,
    'user_id' => true,
    'created' => true,
    'modified' => true,
    'trade' => true,
    'element' => true,
    'allocation' => true,
    'phase' => true,
    'phases' => true,
    'designvariant' => true,
    'user' => true,
    'amounts' => true,
    'costs' => true,
    'descriptions_phases' => true,
    'descriptions_phase' => true,
    '*' => true
],
'[dirty]' => [
    'associated' => true,
    'user_id' => true,
    'designvariant' => true,
    'phases' => true,
    'element_id' => true,
    'shorttext' => true,
    'longtext' => true,
    'trade_id' => true,
    'allocation_id' => true
],
'[original]' => [],
'[virtual]' => [],
'[errors]' => [],
'[invalid]' => [],
'[repository]' => 'Descriptions'

}

调试（$ save）;

object(App\Model\Entity\Description) {

'associated' => [
    (int) 0 => 'Phases'
],
'user_id' => (int) 1,
'designvariant' => (int) 666,
'phases' => [
    (int) 0 => [
        'id' => (int) 5
    ]
],
'element_id' => 'A',
'shorttext' => 'title',
'longtext' => 'text',
'trade_id' => '0',
'allocation_id' => 'BMST',
'created' => object(Cake\I18n\FrozenTime) {

    'time' => '2019-01-11T10:04:32+00:00',
    'timezone' => 'UTC',
    'fixedNowTime' => false

},
'modified' => object(Cake\I18n\FrozenTime) {

    'time' => '2019-01-11T10:04:32+00:00',
    'timezone' => 'UTC',
    'fixedNowTime' => false

},
'id' => (int) 133,
'[new]' => false,
'[accessible]' => [
    'trade_id' => true,
    'element_id' => true,
    'allocation_id' => true,
    'shorttext' => true,
    'longtext' => true,
    'designvariant_id' => true,
    'user_id' => true,
    'created' => true,
    'modified' => true,
    'trade' => true,
    'element' => true,
    'allocation' => true,
    'phase' => true,
    'phases' => true,
    'designvariant' => true,
    'user' => true,
    'amounts' => true,
    'costs' => true,
    'descriptions_phases' => true,
    'descriptions_phase' => true,
    '*' => true
],
'[dirty]' => [],
'[original]' => [],
'[virtual]' => [],
'[errors]' => [],
'[invalid]' => [],
'[repository]' => 'Descriptions'

}

记录将顺利保存到“描述表”中，但不会保存任何关联的数据。

我缺少明显的东西吗？感谢您的任何帮助。另外，如果您需要更多信息，请询问，因为这是我的第一篇文章：-）

Answer 1

仅保存实体，即phases必须保存一个实体数组，而不是嵌套数组。嵌套数组就是您要传递给newEntity() / patchEntity()的对象，在那里它们将被相应地转换为实体。

$description->phases = [
    $this->Descriptions->Phases->get(5)
];

另请参见

Cookbook > Database Access & ORM > Saving Data > Saving With Associations
Cookbook > Database Access & ORM > Saving Data > Saving Entities > Saving Associations

BelongsToMany关联记录不会保存在联接表中

1 个答案: