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我遇到意想不到的行为与表单处理，symfony 1.4与教条。我有有许多一对多的关系，本身就是一个表：奇怪的symfony 1.4形式多对多的行为与学说
Person:
[...]
relations:
Teachers:
class: Person
refClass: PersonTeacher
local: student_id
foreign: teacher_id
foreignAlias: Students
PersonTeacher:
columns:
teacher_id: { type: integer, primary: true }
student_id: { type: integer, primary: true }
在的人，我有这被称为为personForm用于自定义窗口小部件的方法：没有
public function getTeachersOrderByName()
{
$q = Doctrine::getTable('Person')
->createQuery('t')
->leftJoin('t.Students s')
->where('s.id = ?', $this->getId())
->orderBy('t.last_name, t.first_name ASC');
return $q->execute();
}
该方法调用，Doctrine从PersonTeacher正确插入和删除记录。
Doctrine_Connection->update(object('PersonTeacherTable'), array('student_id' => '9'), array('teacher_id' => '9', 'student_id' => '6'))
会抛出
SQLSTATE[23000]: Integrity constraint violation: 19 columns teacher_id, student_id are not unique
回溯：：但是，当我调用该方法从为personForm，下面的更新是在保存形式为[从日志取]运行
at Doctrine_Connection_Statement->execute(array('9', '9', '6'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Connection.php line 1042 ...
at Doctrine_Connection->exec('UPDATE person_teacher SET student_id = ? WHERE teacher_id = ? AND student_id = ?', array('9', '9', '6'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Connection.php line 653 ...
at Doctrine_Connection->update(object('PersonTeacherTable'), array('student_id' => '9'), array('teacher_id' => '9', 'student_id' => '6'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Connection/UnitOfWork.php line 534 ...
at Doctrine_Connection_UnitOfWork->update(object('PersonTeacher'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Connection/UnitOfWork.php line 89 ...
at Doctrine_Connection_UnitOfWork->saveGraph(object('PersonTeacher'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Record.php line 1718 ...
at Doctrine_Record->save(object('Doctrine_Connection_Sqlite'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Collection.php line 910 ...
at Doctrine_Collection->save(object('Doctrine_Connection_Sqlite'), 1)
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Connection/UnitOfWork.php line 136 ...
at Doctrine_Connection_UnitOfWork->saveGraph(object('Person'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Record.php line 1718 ...
at Doctrine_Record->save(object('Doctrine_Connection_Sqlite'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Collection.php line 910 ...
at Doctrine_Collection->save(object('Doctrine_Connection_Sqlite'),)
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Connection/UnitOfWork.php line 445 ...
at Doctrine_Connection_UnitOfWork->saveAssociations(object('Person'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Connection/UnitOfWork.php line 142 ...145.
at Doctrine_Connection_UnitOfWork->saveGraph(object('Person'))
in SF_SYMFONY_LIB_DIR/plugins/sfDoctrinePlugin/lib/vendor/doctrine/Doctrine/Record.php line 1718 ...
at Doctrine_Record->save(object('Doctrine_Connection_Sqlite'))
in SF_SYMFONY_LIB_DIR/form/addon/sfFormObject.class.php line 161 ...
at sfFormObject->doSave(object('Doctrine_Connection_Sqlite'))
in SF_ROOT_DIR/lib/form/doctrine/base/BasePersonForm.class.php line 116 ...
at BasePersonForm->doSave(object('Doctrine_Connection_Sqlite'))
in SF_SYMFONY_LIB_DIR/form/addon/sfFormObject.class.php line 130 ...
只有当多对多表指向同一个表时才会发生这种情况。我也有一对一指向它自己的表，并且它能正常工作。
这枚戒指任何钟声？
是否失败的约束似乎正确的你？我同意这对（teacher_id，student_id）在refClass表中应该是唯一的，但是teacher_id本身不应该是唯一的，student_id也不应该是唯一的。你能否检查一下你的餐桌结构，告诉我们它受到了什么限制？ – greg0ire 2011-02-15 22:25:53
@ greg0ire：在我的SQLite数据库中创建的唯一约束是PK（在symfony生成的schema.sql中确认），所以我认为错误是指PK。问题是根本不应该调用Doctrine_Connection :: update（） - PersonTeacher记录只应根据需要进行INSERT和DELETEd，直到我尝试调用getTeachersOrderByName（）方法时才会发生这种情况。这不知何故打开了神秘的更新（）调用的大门。 – yitznewton 2011-02-15 22:36:29