Question

我在这里做错了什么，或者这是某种Bug？

在TicketsTable.php上

/**
 * Initialize method
 *
 * @param array $config The configuration for the Table.
 * @return void
 */
public function initialize(array $config) {
    $this->table('tickets');
    $this->displayField('title');
    $this->primaryKey('id');
    $this->addBehavior('Timestamp', [
        'events' => [
            'Tickets.closed' => [
                'close_date' => 'always'
            ],
    ]]);
    $this->belongsTo('Registars', [
        'className' => 'Users',
        'foreignKey' => 'registar_id'
    ]);
    $this->belongsTo('Parents', [
        'className' => 'Tickets',
        'foreignKey' => 'parent_id',
    ]);
   }

在控制器上

/**
     * View method
     *
     * @param string|null $id Ticket id.
     * @return void
     * @throws \Cake\Network\Exception\NotFoundException When record not found.
     */
    public function view($id = null) {
        $ticket = $this->Tickets->get($id, [
            'contain' => ['Parents', 'Registars']
        ]);
        $this->set('ticket', $ticket);
        $this->set('_serialize', ['ticket']);
    }

错误：

错误：SQLSTATE [42000]：语法错误或访问冲突：1066不唯一的表/别名：＆＃39;票证＆＃39;

如果您使用SQL关键字作为表列名，则可以在config / app.php中为数据库连接启用标识符引用。

SQL查询：

SELECT Tickets.id AS Tickets__id，Tickets.parent_id AS Tickets__parent_id，Tickets.title AS Tickets__title，Tickets.description AS Tickets__description，Tickets.registar_id AS {{ 1}}，Tickets.type_id AS Tickets__registar_id，Tickets.origin_id AS Tickets__type_id，Tickets.origin_date AS Tickets__origin_id，Tickets.process_id AS Tickets__origin_date，Tickets.activity_id AS {{ 1}}，Tickets.category_id AS Tickets__process_id，Tickets.supplier_id AS Tickets__activity_id，Tickets.safety_id AS Tickets__category_id，Tickets.priority_id AS Tickets__supplier_id，Tickets.approved AS {{ 1}}，Tickets.approve_user_id AS Tickets__safety_id，Tickets.close_date AS Tickets__priority_id，Tickets.close_user_id AS Tickets__approved，Tickets.comment AS Tickets__approve_user_id，Tickets.status_id AS {{ 1}}，Tickets.modified_user_id AS Tickets__close_date，Tickets.modified AS Tickets__close_user_id，Tickets.created AS Tickets__comment，Users.id AS Tickets__status_id，Users.name AS {{ 1}}，Users.username AS Tickets__modified_user_id，Users.password AS Tickets__modified，Users.email AS Tickets__created，Users.active AS Users__id，Users.modified AS {{ 1}}，Users.created AS Users__name FROM ticket Tickets LEFT JOIN ticket Tickets ON Tickets.id =（Tickets.parent_id）LEFT JOIN users Users ON Users.id =（Tickets.registar_id）WHERE Ti ckets.id =：c0 LIMIT 1

Answer 1

这应该是开箱即用的，连接的表应该正确地别名为Registars和Parents，并且肯定这个工作直到最近，所以是的，这是一个bug，可能是相关的到 https://github.com/cakephp/cakephp/pull/5836

请在GitHub报告此问题。

Udate 实际上似乎已经报道了这一点： https://github.com/cakephp/cakephp/issues/5882

Answer 2

请按照以下方式更改您所属的关联类名

$this->belongsTo('Registars', [
        'className' => 'Registars',
        'foreignKey' => 'registar_id'
    ]);
    $this->belongsTo('Parents', [
        'className' => 'Parents',
        'foreignKey' => 'parent_id',
    ]);

'className'=＆gt; '用户'应为'className'=＆gt; 'Registars'
'className'=＆gt; '门票'，应该是'className'=＆gt; '父母'

由于

CakePHP3 - Parent BelongsTo - 数据库错误PDOException

2 个答案: