如何插入MongoDB中内数阵列的最后一项的数据
我正在尝试将数据插入MongoDB阵列的最后一个元素中。在第一个元素中插入使用0
运算符,但是我对如何插入最后一个元素感到困惑。要解释它,请考虑以下数据:
[
{
"_id": "1",
"company": "turivius",
"forms": [
{
"current_version": 1,
"history": [
{
"content": [],
"layout": [],
"responses": [
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"primeiro user": "primeiro form, resposta 1",
},
{
"field_id": 1,
"value": "aaa",
},
],
},
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"primeiro user": "primeiro form, resposta 2",
},
{
"field_id": 1,
"value": "bbb",
},
],
},
],
"version": 0,
},
{
"content": [],
"layout": [],
"responses": [
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"primeiro user": "primeiro form, resposta 1 v1",
},
{
"field_id": 1,
"value": "aaa",
},
],
}
],
"version": 1,
},
],
"id": "33b66684-24a9-4a45-a12f-27a330152ac8",
"is_active": True,
},
{
"current_version": 0,
"history": [],
"id": "fa2eb9a1-c7c4-4b64-b682-7f51658bc4ab",
"is_active": False,
},
],
"user_id": "1",
},
{
"_id": "2",
"company": "turivius",
"forms": [
{
"current_version": 0,
"history": [],
"id": "565656",
"is_active": True,
},
],
"user_id": "9999",
},
]
我想用user_id
= 1,form.id
= 33B66684-24A9-4A9-4A45-A12F插入文档中的数据。 -27A330152AC8 和在历史记录中,其中版本
= 1我想插入一个新的wenders> wenders
:
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"test": "test",
},
{
"field_id": 1,
"test2": "test3",
},
],
}
版本1是最后一个元素,如果我想要在第一个元素中插入以下代码会起作用:
find_one_and_update(
{"$and": [{"user_id": "1"}, {"forms.id": '33b66684-24a9-4a45-a12f-27a330152ac8'}]},
{
"$push": {"forms.$.history.0.responses": data_here},
},
return_document=ReturnDocument.AFTER,
)
无论如何是否有这样做,还是我需要更复杂的查询才能做到这一点?
I am trying to insert data in the last element of an array in MongoDB. insert in the first element works using the 0
operator, but I'm confused about how to insert in the last element. To explain it, consider the following data:
[
{
"_id": "1",
"company": "turivius",
"forms": [
{
"current_version": 1,
"history": [
{
"content": [],
"layout": [],
"responses": [
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"primeiro user": "primeiro form, resposta 1",
},
{
"field_id": 1,
"value": "aaa",
},
],
},
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"primeiro user": "primeiro form, resposta 2",
},
{
"field_id": 1,
"value": "bbb",
},
],
},
],
"version": 0,
},
{
"content": [],
"layout": [],
"responses": [
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"primeiro user": "primeiro form, resposta 1 v1",
},
{
"field_id": 1,
"value": "aaa",
},
],
}
],
"version": 1,
},
],
"id": "33b66684-24a9-4a45-a12f-27a330152ac8",
"is_active": True,
},
{
"current_version": 0,
"history": [],
"id": "fa2eb9a1-c7c4-4b64-b682-7f51658bc4ab",
"is_active": False,
},
],
"user_id": "1",
},
{
"_id": "2",
"company": "turivius",
"forms": [
{
"current_version": 0,
"history": [],
"id": "565656",
"is_active": True,
},
],
"user_id": "9999",
},
]
I want to insert data in the document with user_id
= 1, form.id
= 33b66684-24a9-4a45-a12f-27a330152ac8
and in the history array where the version
= 1 I want to insert a new response
:
{
"client_id": 100,
"response_date": datetime(2022, 5, 17, 3, 0),
"values": [
{
"field_id": 0,
"test": "test",
},
{
"field_id": 1,
"test2": "test3",
},
],
}
The history with version 1 is the last element, if I wanted insert in the first element the following code would works:
find_one_and_update(
{"$and": [{"user_id": "1"}, {"forms.id": '33b66684-24a9-4a45-a12f-27a330152ac8'}]},
{
"$push": {"forms.$.history.0.responses": data_here},
},
return_document=ReturnDocument.AFTER,
)
Is there anyway to do it that way or I need a more complex query to do it?
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当这些条件为真时,您需要在响应数组中添加新文档:
forms
是一个数组,因此您想更新与条件匹配的数组元素,因此您可以使用 $ [dissentifier] 操作员。在表单数组中,您只想使用特定版本更新历史记录,因此您需要多次使用$ [dissidenifier]
运算符,您要更新的字段将是这样:f是与条件和h匹配其他条件的历史记录数组的元素相匹配的每个元素的标识符。
arrayfilters
对象用于定义条件。完整的查询可能是这样的:
在mongodb playground上工作示例
You want to add a new document to the responses array when those conditions are true:
forms
is an array, so you want to update the array element that matches the condition, so you can use the $[identifier] operator. Inside the array of forms, you only want to update the history with a specific version, so you need to use the$[identifier]
operator multiple times, the field you want to update would be like this:f is the identifier of each elements in forms that matches the condition and h the elements of the history array that match the other condition. An
arrayFilters
object is used to define the conditions.The complete query could be like this:
Working example at MongoDB playground