我正在CakePHP中建立一个电子教学网站，其中包含模型：课程，测试，问题，答案等。
以下是我的协会：
此模型关联在大多数情况下都能正常工作。例如，课程的烘焙CRUD操作知道有属于它的测试，问题知道他们有相关的答案等...
但是我正在尝试编写一个在TestsController中运行的测试管理工具，并且关联级别在Question处结束。没有答案。换句话说，我正在处理的视图默认来自烘焙的TestsController：
Array
(
[Test] => Array
(
[id] => 1
[name] => Test 1
[course_id] => 1
[time_limit] => 30
[max_questions] => 20
[randomize_order] => 1
[num_questions] => 2
)
[Course] => Array
(
[id] => 1
[course_identifier] => TLE1001
[title] => Child Development I
[description] =>
)
[Question] => Array
(
[0] => Array
(
[id] => 1
[text] => What is your name?
[test_id] => 1
[order] => 0
)
[1] => Array
(
[id] => 2
[text] => What is my name?
[test_id] => 1
[order] => 0
)
)
)
如您所见，我视图中的$ test数组在Question处停止，并且没有提取问题的相关答案。
我通过在TestsController中更改“视图”操作的底部来修复此问题：
$test = $this->Test->read(null, $id);
$test['Question'] = $this->Test->Question->find('all'); //I added this line...
$this->set('test', $test);
我添加了中间行，因此在为要使用的视图设置$ test数组之前，它会手动替换$ test ['Question']的所有内容。
结果如下：
Array
(
[Test] => Array
(
[id] => 1
[name] => Test 1
[course_id] => 1
[time_limit] => 30
[max_questions] => 20
[randomize_order] => 1
[num_questions] => 2
)
[Course] => Array
(
[id] => 1
[course_identifier] => TLE1001
[title] => Child Development I
[description] => The first years of life offer a window of opportunity for a child’s development. A solid understanding of how children grow and develop is essential to providing a quality care environment.
)
[Question] => Array
(
[0] => Array
(
[Question] => Array
(
[id] => 1
[text] => What is your name?
[test_id] => 1
[order] => 0
)
[Test] => Array
(
[id] => 1
[name] => Test 1
[course_id] => 1
[time_limit] => 30
[max_questions] => 20
[randomize_order] => 1
[num_questions] => 2
)
[Answer] => Array
(
[0] => Array
(
[id] => 1
[question_id] => 1
[text] => My name is what I say it is.
[correct] => 1
)
[1] => Array
(
[id] => 2
[question_id] => 1
[text] => My name is Earl.
[correct] =>
)
)
)
[1] => Array
(
[Question] => Array
(
[id] => 2
[text] => What is my name?
[test_id] => 1
[order] => 0
)
[Test] => Array
(
[id] => 1
[name] => Test 1
[course_id] => 1
[time_limit] => 30
[max_questions] => 20
[randomize_order] => 1
[num_questions] => 2
)
[Answer] => Array
(
[0] => Array
(
[id] => 3
[question_id] => 2
[text] => None of your business
[correct] => 1
)
[1] => Array
(
[id] => 4
[question_id] => 2
[text] => Jim
[correct] =>
)
)
)
)
)
这对我必须完成的工作有效，但对我来说似乎很难看。正如您所看到的，Answer（s）已加载，但我现在也有重复信息，因为当它加载问题模型时，它会拉入相关的测试。而且我很确定这与CakePHP约定不相符......
有更好的方法吗？ CakePHP是否只为模型关联构建关联数据数组，然后停止？
P.S。我试着添加：
var $ uses = array（'Test'，'Question'，'Answer'）;
...到我的TestsController的顶部，但它没有解决问题，似乎没有效果。
必须有更好的方法让CakePHP加载所有相关的数据模型和他们的关联......
答案 0 :(得分：2)
使用CakePHP的可包含行为： http://book.cakephp.org/1.3/view/1323/Containable
我认为对于您的具体情况，查询将如下所示：
$this->Test->find('all', array(
'contain'=>array('Question')
)
);
您还可以使用条件，订购等。
答案 1 :(得分：1)
我使用了似乎这样做的递归属性。
$test = $this->Test->find('all', array('recursive' => 2));
告诉CakePHP加载另一级别的关联，因此结果不仅包括问题，还包括相关的答案。