本文整理汇总了TypeScript中@angular/fire/firestore.AngularFirestoreCollection.snapshotChanges方法的典型用法代码示例。如果您正苦于以下问题：TypeScript AngularFirestoreCollection.snapshotChanges方法的具体用法？TypeScript AngularFirestoreCollection.snapshotChanges怎么用？TypeScript AngularFirestoreCollection.snapshotChanges使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类@angular/fire/firestore.AngularFirestoreCollection的用法示例。
在下文中一共展示了AngularFirestoreCollection.snapshotChanges方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: constructor
constructor(private afs: AngularFirestore, private authService: AuthService) {
this.usersCollection = afs.collection<User>('users');
this.user = this.usersCollection.snapshotChanges().pipe(
map(actions => actions.map(a => {
const data = a.payload.doc.data() as User;
const id = a.payload.doc.id;
return { id, ...data };
}))
);
this.redCollection = afs.collection<Red>('red');
this.red = this.redCollection.snapshotChanges().pipe(
map(actions => actions.map(a => {
const data = a.payload.doc.data() as Red;
const id = a.payload.doc.id;
return { id, ...data };
}))
);
this.coorCollection = afs.collection<Coordenadas>('coordenadas');
this.coor = this.coorCollection.snapshotChanges().pipe(
map(actions => actions.map(a => {
const data = a.payload.doc.data() as Coordenadas;
const id = a.payload.doc.id;
return { id, ...data };
}))
);
}示例2: getBooks
getBooks() {
this.books = this.booksCollection.snapshotChanges().pipe(
map(collection => collection.map(document => {
const data = document.payload.doc.data() as Book;
const id = document.payload.doc.id;
return { id, ...data };
})));
return this.books;
}示例3: getData
getData(): Observable<any[]> {
// ['added', 'modified', 'removed']
return this.notesCollection.snapshotChanges().pipe(
map((actions) => {
return actions.map((a) => {
const data = a.payload.doc.data();
return { id: a.payload.doc.id, ...data };
});
})
);
}