I am using an observable to retrieve data from an http like: handleError(error:any) { ... } getData() { return this._api_service.http.get<JSON>(this._url).pipe(retry(1), catchError(this.handleError)); } loadData() { this.getData().subscribe((data: {}) => { do_something_to_data(data); }); // here I want to do somethings after all the…
I have a form with multiple posts. User has the option to comment on one post and submit or comment on multiple posts and submit. The problem which I'm facing is that I have just one API to save user…
Below is the process I've been using to subscribe and then update a reactive form based on observable data. Maybe there's a way to fix the problem without subscribing to the observable and changing the value. @Component({ selector: 'app-my-component', template:…
I don't know if this is possible! I want some generic code. This should act similar to a ReplaySubject but, on subscribing, should emit each most recent message with a unique name. In the code below, the actual output is…
I am currently learning reactjs so I decided to build a react to-do list, am trying to toggle the display of a component but keep running into errors. Please what is the best way to toggle the display of the…
I have a simple Angular component which takes a debounce time as an Input parameter. The parameter type is a number with a default value equals to 0. It is used later on as a debounceTime value. input.component.ts import {…
From the https://firebase.google.com/docs/firestore/query-data/queries documentation snippet, Im unable to get the results as an Observable import { collectionGroup, query, where, getDocs } from "firebase/firestore"; const museums = query(collectionGroup(db, 'landmarks'), where('type', '==', 'museum')); const querySnapshot = await getDocs(museums); querySnapshot.forEach((doc) => { console.log(doc.id,…
I am trying to modify a code in .jsx to include a country selector and for that I am using the country-region-selector package using npm After I install it in my ubuntu, and I am trying to run the code…
I have the solution for the problem but I am posting this question in community in search of a Lightweight or say efficient way to do this if possible. Thus a better approach/advise is appreciated. I have a dictionary /…
(https://i.stack.imgur.com/2zm2w.png) collectionData(queryRef).subscribe((data) => { for (const each of data) { this.getCourse(each.courseId) .pipe(take(1)) .subscribe((courseData) => { const course = courseData[0]; console.log(course); this.getLecturer(course.lecturerId).pipe(take(1)).subscribe((res: any)=>{ const lecturer = res[0]; course.lecturerName = lecturer.lecturerName; course.lecturerImageUrl = lecturer.lecturerImageUrl; }); recentVisit.push(course); }); } }); Hi I am…