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how to update firebase document field angular
“how to update firebase document field angular” Code Answer’s
how to update firebase document field angular
javascript by
Cherry berry
on Dec 15 2020
Donate
1
// how to create a collection tutorials: Observable
; // db: AngularFireStore this.tutorials = db.collection('tutorials').valueChanges(); // To get meta data and create collection tutorials: Observable
; this.tutorials = db.collection('tutorials').snapshotChanges(); // how to add document to collection const tutorialsRef = db.collection('tutorials'); const tutorial = { title: 'zkoder Tutorial', url: 'bezkoder.com/zkoder-tutorial' }; tutorialsRef.add({ ...tutorial }); // how to update a collection const tutorialsRef = db.collection('tutorials'); tutorialsRef.doc('id').update({ title: 'zkoder new Tut#1' }); // how to delete a document in a collection const tutorialsRef = db.collection('tutorials'); tutorialsRef.doc('id').delete();
Source:
bezkoder.com
how to update firebase document field angular
typescript by
Cherry berry
on Dec 15 2020
Donate
0
updateDoc(_id: string, _value: string) { let doc = this.afs.collection('options', ref => ref.where('id', '==', _id)); doc.snapshotChanges().pipe( map(actions => actions.map(a => { const data = a.payload.doc.data(); const id = a.payload.doc.id; return { id, ...data }; }))).subscribe((_doc: any) => { let id = _doc[0].payload.doc.id; //first result of query [0] this.afs.doc(`options/${id}`).update({rating: _value}); }) }
Source:
stackoverflow.com
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