Question

我有一个简单的表格结构：

CREATE TABLE `programs` (
`id` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
`key` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
`user_id` int(30) DEFAULT NULL,
`installation_date` date DEFAULT NULL,
`activation_date` date DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

CREATE TABLE `users` (
`id` int(30) NOT NULL,
`email` varchar(30) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`password` varchar(255) NOT NULL,
`name` varchar(30) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`second_name` varchar(30) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`phone` varchar(30) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT NULL,
`activated` tinyint(1) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

ALTER TABLE `programs`
ADD PRIMARY KEY (`id`),
ADD KEY `user_id` (`user_id`) USING BTREE;

ALTER TABLE `users`
ADD PRIMARY KEY (`id`),
ADD UNIQUE KEY `email` (`email`);

PHPMyAdmin方案： scheme

然后，我按bin\cake bake model users和bin\cake bake model programs生成表格和模型类。

但$SomeSuccessfullyLoadedUser->programs总是返回null。我确定存在与现有programs相关的行（user_id}行，与users.id相关，我确信实体已成功加载。

如何使用外键访问？

P.S ProgramsTable

class ProgramsTable extends Table
{
  public function initialize(array $config)
  {
    parent::initialize($config);

    $this->setTable('programs');
    $this->setDisplayField('id');
    $this->setPrimaryKey('id');

    $this->belongsTo('Users', [
        'foreignKey' => 'user_id'
    ]);
  }

//validationDefault


  public function buildRules(RulesChecker $rules)
  {
    $rules->add($rules->existsIn(['user_id'], 'Users'));

    return $rules;
  }
}

UsersTabel

class UsersTable extends Table
{
  public function initialize(array $config)
  {
    parent::initialize($config);

    $this->setTable('users');
    $this->setDisplayField('name');
    $this->setPrimaryKey('id');

    $this->hasMany('Programs', [
        'foreignKey' => 'user_id'
    ]);
    $this->hasMany('SupportTickets', [
        'foreignKey' => 'user_id'
    ]);
  }


//validationDefault


  public function buildRules(RulesChecker $rules)
  {
    $rules->add($rules->isUnique(['email']));

    return $rules;
  }

我的应用程序不需要ProgramsController，我在AppController中加载程序模型。 UsersController具有简单的操作，如登录，注册，注销等。没有特定的使用ProgramsModel。

P.P.S 例如（在UsersController中）

$SomeSuccessfullyLoadedUser= $this->Users->get($this->Auth->user()['id']);
debug($SomeSuccessfullyLoadedUser->email);      //prints user's email
debug($SomeSuccessfullyLoadedUser->programs);   //prints 'null'

Answer 1

您必须添加类名以包含数组

$SomeSuccessfullyLoadedUser= $this->Users->get($this->Auth->user()['id'],
[
'contain'=>['Programs']
]);

有关详细信息，请使用此link

CakePHP 3.4外键不起作用

1 个答案: