google-cloud-firestore

问题 Is there a way to add time to a server timestamp without using cloud functions? What I want is to update a timestamp from a panel, and have the user side check if the timestamp is greater than the current time. I also would like for the panel user to be able to set the amount of time to add, so doing the logic on the user side is not an optimal solution. Example: document.set({ validTo: firestore.FieldValue.serverTimestamp() + 5000 }); 回答1: You can't perform date math on server timestamps on

问题 Is there a way to add time to a server timestamp without using cloud functions? What I want is to update a timestamp from a panel, and have the user side check if the timestamp is greater than the current time. I also would like for the panel user to be able to set the amount of time to add, so doing the logic on the user side is not an optimal solution. Example: document.set({ validTo: firestore.FieldValue.serverTimestamp() + 5000 }); 回答1: You can't perform date math on server timestamps on

问题 I am trying to figure out how to add timestamps to documents created in my firestore database. I have read and tried each and every one of the suggestions in this post. I have read the documentation links on that post and I can't make sense of the steps I'm supposed to try to implement in order to record the timestamp for the document creation date. In my firebase settings I have: firebase.initializeApp(config); const database = firebase.database(); const fsDB = firebase.firestore(); const

问题 I am trying to figure out how to add timestamps to documents created in my firestore database. I have read and tried each and every one of the suggestions in this post. I have read the documentation links on that post and I can't make sense of the steps I'm supposed to try to implement in order to record the timestamp for the document creation date. In my firebase settings I have: firebase.initializeApp(config); const database = firebase.database(); const fsDB = firebase.firestore(); const

问题 Any suggestions about why it is happening. I have used in the below mentioned manner: FirebaseFirestore dbFirestore; dbFirestore = FirebaseFirestore.getInstance(); While Uploading I have used it in this manner: documentReference= dbFirestore.collection("CLIENT_DETAIL").document(mAuth.getUid()); documentReference.set(userData); I am not able to write it on Firestore, I tried many different possibilities. However, sometimes it does write when I try to log in but not when the code execute while

问题 Any suggestions about why it is happening. I have used in the below mentioned manner: FirebaseFirestore dbFirestore; dbFirestore = FirebaseFirestore.getInstance(); While Uploading I have used it in this manner: documentReference= dbFirestore.collection("CLIENT_DETAIL").document(mAuth.getUid()); documentReference.set(userData); I am not able to write it on Firestore, I tried many different possibilities. However, sometimes it does write when I try to log in but not when the code execute while

问题 Cannot get anything from the firebase database. It is showing an error of: Uncaught TypeError: db.collection is not a function I have the script setup here as shown: var config = { apiKey: "*****", authDomain: "*****", databaseURL: "*****", projectId: "*****", storageBucket: "*****", messagingSenderId: "*****" }; firebase.initializeApp(config); const db = firebase.database(); const firstName = document.querySelector('#firstName').value; const mainButton = document.querySelector('#mainButton')

问题 Cannot get anything from the firebase database. It is showing an error of: Uncaught TypeError: db.collection is not a function I have the script setup here as shown: var config = { apiKey: "*****", authDomain: "*****", databaseURL: "*****", projectId: "*****", storageBucket: "*****", messagingSenderId: "*****" }; firebase.initializeApp(config); const db = firebase.database(); const firstName = document.querySelector('#firstName').value; const mainButton = document.querySelector('#mainButton')

问题 Is there a way to implement back pagination with firestore? I am struggling to implement pagination with firestore, and there are limited firestore queries for it. Forward pagination can be made by startAt and limit method, that is ok. But back pagination can't be easily done, because we only have endBefore , and endAt method, and how can we get last n elements from given document? I know realtime database have method limitToLast . Is there any query like this for firestore? (Also I need to

问题 I have the following (sample) array: pages = [ { "name" : "Hello", "id" : 123 },{ "name" : "There", "id" : 987 },{ "name" : "Great", "id" : 555 } ]; I want to save every object in this array as Document in a Collection. Therefor I have the following function: exports.testSaveFacebookPages = functions.https.onRequest((req, res) => { cors(req, res, () => { let userUid = req.body.uid // pages array is available here... const PagesRef = admin.firestore().collection(`/users/${userUid}/pages/`)