laravel mongodb 将元素推送到 document_ 中的现有数组
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laravel mongodb push element to existing array in document_
提问by jerik
In my mongodb collection I want to push some elements to an existing array. I use jenssegers/Laravel-MongoDB - Eloquent model and Query builderto work with lavavel and mongodb.
在我的 mongodb 集合中,我想将一些元素推送到现有数组。我使用jenssegers/Laravel-MongoDB - Eloquent 模型和查询构建器来处理 lavavel 和 mongodb。
How can I use the $push operator in jenssegers/Laravel-MongoDB?
如何在 jenssegers/Laravel-MongoDB 中使用 $push 运算符?
MongoDB entry which shall be updated (RockMongo representation):
应更新的 MongoDB 条目(RockMongo 表示):
{
"_id": ObjectId("5328bc2627784fdb1a6cd398"),
"comments": {
"0": {
"id": 3,
"score": 8
}
},
"created_at": ISODate("2014-03-18T21:35:34.0Z"),
"file": {
"file_id": NumberLong(1175),
"timestamp": NumberLong(1395178534)
}
}
Hint about array representation in rockmongo and mongo shell
关于rockmongo 和mongo shell 中的数组表示的提示
RockMongoand mongo shellarray representation of the documents are a little bit different. Have a look at the comments
-array. The above RockMongo representation appears in the mongo shell as:
文档的 RockMongo和mongo shell数组表示有点不同。看看comments
-array。上面的 RockMongo 表示在 mongo shell 中显示为:
{
"_id" : ObjectId("5328c33a27784f3b096cd39b"),
"comments" : [
{
"id" : 3,
"score" : 8
}
],
"created_at" : ISODate("2014-03-18T22:05:46Z"),
"file" : {
"file_id" : NumberLong(1176),
"timestamp" : NumberLong(1395180346)
}
}
As the documentation states the $push
operater to push elements to an array. This works fine in the mongo-shell:
正如文档所述,$push
操作员将元素推送到数组。这在 mongo-shell 中工作正常:
Mongo shell
蒙戈壳
db.Images.update({'file.file_id': 1175},
{ $push: { comments: { id: 3, score: 8} }
})
But in the query-builder I struggle to incorporate the $push operator. I get the error:
但是在查询构建器中,我很难合并 $push 运算符。我收到错误:
localhost:27017: Modified field name may not start with $
I did not find any documentation or example that showed me how to do it..
我没有找到任何文档或示例向我展示了如何做到这一点..
My jenssegers/Laravel-MongoDB code, that returns the error
我的 jenssegers/Laravel-MongoDB 代码,返回错误
// $file_id = 1175
public static function addComment( $file_id ) {
$image = Images::where( 'file.file_id', '=', floatval( $file_id ) )
->update( array('$push' => array( 'comments' => array( 'id' => 4, 'score' => 9 ) ) ) );
return $image;
}
回答by Neil Lunn
Assuming everything is okay as it works in the shell then use the provided method to pushinstead:
假设一切正常,因为它在 shell 中工作,然后使用提供的方法来推送:
Images::where('file.file_id', '=', floatval( $file_id ))
->push('comments', array( 'id' => 4, 'score' => 9 ));