如何解决将 Json 对象数组上传到 Firestore
{
"object1":[
{
"data1":19.77,"data2":-0.953125,"data3":-0.265625,"id":17231,"date":"2021-05-14/08:38:47.471"
},{
"data1":19.77,"date":"2021-05-14/08:38:47.596"
},"data2":-0.9609375,"data3":-0.2734375,"date":"2021-05-14/08:38:47.721"
}
],"object2":[
{
"data1":19.91,"data2":-0.9765625,"data3":-0.109375,"id":18996,"date":"2021-05-14/08:38:47.681"
},{
"data1":19.91,"date":"2021-05-14/08:38:47.806"
},"data2":-1,"data3":-0.1171875,"date":"2021-05-14/08:38:47.931"
},"data2":-0.96875,"data3":-0.1015625,"id":18997,"date":"2021-05-14/08:38:48.051"
},"date":"2021-05-14/08:38:48.059"
},"date":"2021-05-14/08:38:48.176"
}
]
}
而且我一直在尝试将其上传到 firebase,但没有成功,尝试在 Firestore 中遵循此架构:
Objects
├───Object1
│ ├───[Upload Timestamp]
│ │ └───Data Array 1
│ ├───[Upload Timestamp]
│ │ └───Data Array 2
│ └───[Upload Timestamp]
│ └───Data Array 3
└───Object2
├───[Upload Timestamp]
│ └───Data Array 1
├───[Upload Timestamp]
│ └───Data Array 2
├───[Upload Timestamp]
│ └───Data Array 3
├───[Upload Timestamp]
│ └───Data Array 4
├───[Upload Timestamp]
│ └───Data Array 5
└───[Upload Timestamp]
└───Data Array 6
我尝试使用嵌套的 For 循环、字典和诸如此类的东西,但没有成功。到目前为止,我只能将每个对象的最后一个数据数组上传到 Firestore。
我有什么:
import firebase_admin
from firebase_admin import credentials
from firebase_admin import firestore
import json
from itertools import groupby
import datetime
from datetime import date
today = date.today()
d1 = today.strftime("%d.%m.%Y")
json_file_path = "./myfile.json"
with open(json_file_path,'r') as j:
contents = json.loads(j.read())
data = {}
#Sorting my json file
for key,items in groupby(sorted(contents,key = lambda x: (x['id'],x['date'])),key=lambda x: x['id']):
data[key] = list(items)
cred = credentials.Certificate("myAppCreds.json")
firebase_admin.initialize_app(cred,{
'projectId': "MyProjectID",})
db = firestore.client()
for keys in data:
doc_ref = db.collection('Objects').document(keys).collection(d1).document(str(datetime.datetime.Now()))
for info in data[keys]:
doc_ref.set(keys)
发生了什么:
在 Firestore 中创建了以下条目:
Objects/object1/19.05.2021/2021-05-19 13:26:03.933868
文档“2021-05-19 13:26:03.933868”不断更新新值,而不是为每个新值创建一个新值。
object2
解决方法
这是一个工作草案,有一些评论:
import firebase_admin
from firebase_admin import credentials
from firebase_admin import firestore
import json
from datetime import date
today = date.today()
d1 = today.strftime("%d.%m.%Y")
json_file_path = "./myfile.json"
with open(json_file_path,'r') as j:
contents = json.loads(j.read())
# 1. This will be the criteria to sort each inner list
# first by ID,then by date,ascending
def _sort(item):
return (item['id'],item['date'])
# 2. Sorting my json file lists,in place
for lista in contents.values():
lista.sort(key=_sort)
cred = credentials.Certificate("myAppCreds.json")
firebase_admin.initialize_app(cred,{
'projectId': "MyProjectID",})
db = firestore.client()
# Inside the collection Objects,I create a document for each object key,# Then set the inner list as an inner document,with value equals to the list.
for key,lista in contents.items():
doc_ref = db.document('Objects/' + key).set({'lista': lista})
这不会绝对按 id/date 排序,因为对象是单独排序的。您可能需要对此进行调整。
在 firebase 中,我已成功创建了运行此代码的文档。
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