CakePHP仅使用连接表查找HABTM

时间:2012-02-22 16:24:09

标签: cakephp has-and-belongs-to-many

我有一个HasAndBelongsToMany用户的目标模型。该HABTM被命名为参与者。当我尝试查找目标的所有参与者时,未使用此HABTM的连接表。以下是目标模型中的相关代码。

class Goal extends AppModel {
    var $hasAndBelongsToMany = array(
    'Participant' => array(
        'className' => 'User',
        'joinTable' => 'goal_participants',
        'foreignKey' => 'goal_id',
        'associationForeignKey' => 'user_id',
        'unique' => true,
        'conditions' => '',
        'fields' => '',
        'order' => '',
        'limit' => '',
        'offset' => '',
        'finderQuery' => '',
        'deleteQuery' => '',
        'insertQuery' => ''
    ));

    function getParticipantIDs($goalID) {
        $this->bindModel(array('hasOne' => array('Participant')));
        return $this->find('list', array(
            'fields' => array('Participant.user_id'),
            'conditions' => array('Participant.goal_id' => $goalID)
        ));
    }
}

我将Participant绑定为hasOne,以便它在查询中创建一个连接,但是我收到以下错误:

Warning (512): SQL Error: 1054: Unknown column 'Participant.user_id' in 'field list' [CORE\cake\libs\model\datasources\dbo_source.php, line 525]
Query: SELECT `Participant`.`id`, `Participant`.`user_id` FROM `users` AS `Participant`   WHERE `Participant`.`goal_id` = '19' AND `Participant`.`status` != 2

1 个答案:

答案 0 :(得分:1)

我在OP发表评论后编辑了答案。

如果我很清楚你打算做什么,这段代码可能会有所帮助:

function getParticipantIDs($goalID) {
    $participants = $this->GoalParticipant->find('list', array(
        'fields' => array('user_id'),
        'conditions' => array('goal_id' => $goalID)
    ));
    return array_values($participants);
} 

我不是100%确定GoalParticipant是正确的语法。我很确定如果连接表名为goals_participants,正确的语法将是GoalsParticipant,但是因为它的名字是goal_participants,我想它可能是GoalParticipant。

相关问题