Question

我在extjs + yii框架中工作。我的客户端在extjs中，服务器端设计在yii框架中。所以extjs的形式输入通过json来到yii framewok。这个json在yii控制器动作中被接受为 -

 public function actionSetUserAnswer()
              {
     $postData = json_decode(file_get_contents("php://input"), true);
                 $clientData = $postData['data'];
                  }

extjs发送的实际json数据是 -

'{"data":[{"optionId":"","questionId":"1","isAnswer":"","option":"Aus","media":"","keyword":"","mediaTypeId":"","id":null},{"optionId":"","questionId":"2","isAnswer":"","option":"india","media":"","keyword":"","mediaTypeId":"","id":null},{"optionId":"","questionId":"3","isAnswer":"","option":"England","media":"","keyword":"","mediaTypeId":"","id":null},{"optionId":"","questionId":"4","isAnswer":"","option":"Srilanka","media":"","keyword":"","mediaTypeId":"","id":null}]}';

所以在yii中如何使用$ clientdata变量访问json的各个字段，如option，questionId等。

Answer 1

您可以使用数组下标

$option = $clientData[0]['option']

或

$questionId = $clientData[0]['questionId']

如果要检索多个值以便在findByAttributes中使用，则需要一组值。您首先从JSON中检索questionId

function get_question_id($elem) {
    return $elem['questionId'];
}

$questionIds = array_map('get_question_id', $clientData);

然后在findByAttributes

中使用此数组

$record=Question::model()->findByAttributes(array("questionId"=>$questionIds));

更新合并您的上一条评论：

static public function get_question_id($elem)
{
    return $elem['questionId'];
}

public function actionSetUserAnswer() {
    $clientData = '{"data":[{"optionId":"","questionId":"1","isAnswer":"","option":"Au‌s","media":"","keyword":"","mediaTypeId":"","id":null},...]}';
    $obj = json_decode($clientData['data']);
    $questionIds = array_map('get_question_id', $obj);
    var_dump($questionIds);
    $records = Question::model()->findByAttributes(array("questionId"=>$questionIds));
}

如何从yii中的extjs访问多值json输出

1 个答案: