CakePHP是在代码级别处理FK,还是我也应该将FK添加到我的数据库中?

here .

model associations

如果你有两张表——学生和课程,每个学生都属于一门课程,你可以这样表述:

<?php
class Student extends AppModel {
    var $name = 'Student';

    var $belongsTo = array(
        'Course' => array(
            'className' => 'Course',
            'foreignKey' => 'course_id'
        )
    );
}
?>

<?php
class Student extends AppModel {
    var $name = 'Student';

    var $belongsTo = array('Course');
}
?>