google-cloud-firestore

问题 We can now retrieve documents from a collection group which is great. To do so, I need to create an index through an error message on the Firebase console. How can I add this new index to the firestore.indexes.json file? Example of the documentation: let museums = db.collectionGroup('landmarks').where('type', '==', 'museum'); museums.get().then(function(querySnapshot) { querySnapshot.forEach(function(doc) { console.log(doc.id, ' => ', doc.data()); }); }); 回答1: At the top level of your index

问题 We can now retrieve documents from a collection group which is great. To do so, I need to create an index through an error message on the Firebase console. How can I add this new index to the firestore.indexes.json file? Example of the documentation: let museums = db.collectionGroup('landmarks').where('type', '==', 'museum'); museums.get().then(function(querySnapshot) { querySnapshot.forEach(function(doc) { console.log(doc.id, ' => ', doc.data()); }); }); 回答1: At the top level of your index

问题 I add some data to the collection. When i retrive it, it is sorted by that generated id. Is it posible to make firebase to sort it in chronological order or it is required to add one more field with date and sort it once it is retrived in flutter? 回答1: Yes you need a createdAt timestamp field and use it like Firestore.instance .collection("users") .orderBy('createdAt', descending: true or false).getDocuments() And you can store createdAt on flutter side with Timestamp (Its included in cloud

问题 I have cloud function code code like this: console.log(`ts: ${(element.get('expire') as admin.firestore.Timestamp).toDate().toUTCString()} now: ${admin.firestore.Timestamp.now().toDate().toUTCString()}`) const greater = (element.get('expire') as admin.firestore.Timestamp) > admin.firestore.Timestamp.now() const lower = (element.get('expire') as admin.firestore.Timestamp) < admin.firestore.Timestamp.now() console.log(`greater: ${greater} lower: ${lower}`) In console: ts: Mon, 08 Apr 2019 20:59

问题 I have cloud function code code like this: console.log(`ts: ${(element.get('expire') as admin.firestore.Timestamp).toDate().toUTCString()} now: ${admin.firestore.Timestamp.now().toDate().toUTCString()}`) const greater = (element.get('expire') as admin.firestore.Timestamp) > admin.firestore.Timestamp.now() const lower = (element.get('expire') as admin.firestore.Timestamp) < admin.firestore.Timestamp.now() console.log(`greater: ${greater} lower: ${lower}`) In console: ts: Mon, 08 Apr 2019 20:59

问题 I have cloud function code code like this: console.log(`ts: ${(element.get('expire') as admin.firestore.Timestamp).toDate().toUTCString()} now: ${admin.firestore.Timestamp.now().toDate().toUTCString()}`) const greater = (element.get('expire') as admin.firestore.Timestamp) > admin.firestore.Timestamp.now() const lower = (element.get('expire') as admin.firestore.Timestamp) < admin.firestore.Timestamp.now() console.log(`greater: ${greater} lower: ${lower}`) In console: ts: Mon, 08 Apr 2019 20:59

问题 I want to do a few things when I fetch for user records in Firestore: filter users within an age range filter users based on gender, location, and favorite fruits get the last 6 recently joined users get users created before today func observeUsers(){ let fruits: [String] = ["none"] let location = "Paris" let gender = "male" let startAge = 15 let endAge = 30 let today: Double = Date().timeIntervalSince1970 var query = db.collection("users") as Query if(!fruits.isEmpty) { query = query

问题 I'm trying to render data from my Firebase Firestore DB after a user enters a control number from a form. This is SingleQuery hook a.k.a. the listener to my Firestore DB //Code to Query data from Database function SingleQuery() { const [drivers, setDrivers] = useState([]); useEffect(() => { const unsubscribe = firebase .firestore() .collection("drivers") .where("controlNumber", "==", {{CONTROL NUMBER FROM FORM}}) //get data according to control number .onSnapshot(snapshot => { const newDriver

问题 I'm trying to render data from my Firebase Firestore DB after a user enters a control number from a form. This is SingleQuery hook a.k.a. the listener to my Firestore DB //Code to Query data from Database function SingleQuery() { const [drivers, setDrivers] = useState([]); useEffect(() => { const unsubscribe = firebase .firestore() .collection("drivers") .where("controlNumber", "==", {{CONTROL NUMBER FROM FORM}}) //get data according to control number .onSnapshot(snapshot => { const newDriver

问题 I am working on an Angular single page web app which uses Firestore as the database and will be deployed to Firebase Hosting. There seems to be no built-in way to log errors to the server or get run-time analytics unless you are developing an Android or iOS mobile app. I want to be able to view the web log files and find out about errors or abuse and see other typical live usage data. For example if the database code throws an error or a web API call returns an unexpected value and I catch