CakePHP 仅使用连接表使用 HABTM 进行查找
我有一个 HasAndBelongsToMany Users 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。这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)
));
}
}
我将参与者绑定为 hasOne,以便它将在查询中创建联接,但出现以下错误:
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
I have a Goal model that HasAndBelongsToMany Users. This HABTM is named Participant. When I try to find all the Participants of a goal, the join table for this HABTM is not being used. Here is the related code in the goal model.
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)
));
}
}
I am binding the Participant as hasOne so that it will create a join in the query, but I get the following error:
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
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我在OP的评论后编辑了答案。
如果我很好地理解你打算做什么,这段代码可能会有所帮助:
我不能100%确定GoalParticipant是正确的语法。我非常确定,如果连接表被命名为 goal_participants,正确的语法将是 GoalsParticipant,但由于它被命名为 goal_participants,我猜它可能是 GoalParticipant。
I edited the answer after OP's comment.
If i understand well what you intend to do, this piece of code might help :
I'm not 100% sure GoalParticipant is the correct syntax. I'm pretty sure that if the join table was named goals_participants, the correct syntax would be GoalsParticipant but as it's named goal_participants I guess it might be GoalParticipant.