[英]Doctrine MongoDB Bundle: Cursor toArray() Error When “_id” is an Array
Resulting from a MapReduce, I have a MongoDb collection that has the following structure: 由MapReduce产生的结果是,我有一个具有以下结构的MongoDb集合:
{ "_id" : { "id" : NumberLong(1), "date" : "04-26-2012" }, "value" : { "count" : 100 } }
In my controller I am doing the following to return an array to display the results: 在我的控制器中,我正在执行以下操作以返回一个数组以显示结果:
$mongoDb = $mongo->selectDatabase($dbname);
$mongoCollection = $mongoDb->selectCollection($collname);
$qb = $mongoCollection->createQueryBuilder();
$qb = $qb->find();
$resultCursor = $qb->getQuery()->execute();
->limit(10);
$resultArray = $resultCursor ->toArray();
However, I get an exception: "Notice: Array to string conversion in vendor/doctrine-mongodb/lib/Doctrine/MongoDB/Cursor.php line 154" 但是,我得到一个例外:“注意:在vendor / doctrine-mongodb / lib / Doctrine / MongoDB / Cursor.php第154行中数组到字符串的转换”
Below is line 154 of Cursor.php. 下面是Cursor.php的154行。 Does MongoCursor::key not handle "_id" as an Array?
MongoCursor :: key是否不能将“ _id”作为数组处理?
/** @proxy */
public function key()
{
return $this->mongoCursor->key();
}
For fast converting mongoDb cursor to array you may use http://php.net/manual/en/function.iterator-to-array.php 为了将mongoDb光标快速转换为数组,您可以使用http://php.net/manual/en/function.iterator-to-array.php
$qb = $this->createQueryBuilder();
$qb->hydrate(false);
$query = $qb->getQuery();
$resultArray = iterator_to_array($query->execute());
key() always returns a string (see http://php.net/manual/en/class.iterator.php ), so it's generating that notice trying to convert an array into string form. key()总是返回一个字符串(请参阅http://php.net/manual/zh/class.iterator.php ),因此它会生成尝试将数组转换为字符串形式的通知。 It is only a notice, though, it should still work.
不过,这只是一个通知,它仍然应该起作用。
The easiest way around this is probably just not to call toArray() on the cursor: iterate through it instead ( foreach $resultCursor as $value) ...
). 解决此问题的最简单方法可能是不对游标调用toArray():而是对其进行迭代(
foreach $resultCursor as $value) ...
)。
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