AttributeError：“ CollectionReference”對象沒有屬性“ set”

Question

我試圖從Firestore數據庫中檢索數據，然后進行一些更改，然后再次在數據庫中設置這些數據。

import firebase_admin
from PreProcessing import Pre_Processing
import pandas as pd
from FeatureExtraction import FeatureExtraction
from Processing import Processing
from firebase_admin import firestore , credentials
def Classification(Data , ID ):
    Answers = []
    Message = Data['message']
    Answers.append(Data['message'])
    PreProcessing = Pre_Processing(Answers)
    Answers = PreProcessing.MainFunction()
    del Answers[0]
    Features = FeatureExtraction(Answers)
    Answers = Features.Test_TFIDF()
    print(Answers.shape)
    print("Finished TF-IDF Training")
    Data1 = pd.DataFrame(Answers)
    del Answers
    Data1 = Data1.fillna(0)
    SentimentList = Features.Sentiment()
    Data1[315477] = SentimentList       
    Processing_Object  = Processing(Data1)
    Results = Processing_Object.Testing()
    Classified = db.collection("Chat").document(Data['ChatID']).collection("chatting").set({
        "message" : Data['message'],
        "from" : Data['from'],
        "Classification" : Results,
        "time" : Data['time'],
    })
    print(Results)
cred = credentials.Certificate("ssmproject-61dec-firebase-adminsdk-op5bp-d525c0a76e.json")
firebase_admin.initialize_app(cred)

db = firestore.client()

NeedClassification = db.collection("NeedClassification")

docs = NeedClassification.get()
for doc in docs:
    if doc != None:
        data = doc.to_dict()
        Classification(data , doc.id)

那是輸出

Test.py:39: DeprecationWarning: 'Collection.get' is deprecated:  please use 'Collection.stream' instead.
  docs = NeedClassification.get()
(1, 315477)
Finished TF-IDF Training
Traceback (most recent call last):
  File "Test.py", line 43, in <module>
    Classification(data , doc.id , db)
  File "Test.py", line 25, in Classification
    Classified = db.collection("Chat").document(Data['ChatID']).collection("chatting").set({
AttributeError: 'CollectionReference' object has no attribute 'set'

我只是在將數據設置回數據庫中遇到問題預先感謝

Answer 1

CollectionReference具有add（）。

DocumentReference具有set（），update（）和delete（）。

看到：

• https://googleapis.github.io/google-cloud-python/latest/firestore/collection.html
• https://googleapis.github.io/google-cloud-python/latest/firestore/document.html
• https://googleapis.github.io/google-cloud-python/latest/firestore/index.html

如果要創建新文檔，則代碼如下所示。（文檔ID是自動設置的）

    Classified = db.collection("Chat").document(Data['ChatID']).collection("chatting").add({
        "message" : Data['message'],
        "from" : Data['from'],
        "Classification" : Results,
        "time" : Data['time'],
    })

要么

    Classified = db.collection("Chat").document(Data['ChatID']).collection("chatting").document().set({
        "message" : Data['message'],
        "from" : Data['from'],
        "Classification" : Results,
        "time" : Data['time'],
    })