All Questions
150
questions
0
votes
2
answers
46
views
How to make Cancellable api calls in loop in Angular?
I have a list containing parameters, such as:
[
{a:1a,b:1b,c:1c},
{a:2a,b:2b,c:2c},
{a:3a,b:3b,c:3c}
]
For each parameter object, I aim to initiate three consecutive API calls, each with ...
- 1
-1
votes
1
answer
129
views
How to rewrite rxjs code without making calls within the subcribe method?
Hi I am having an angular 5 project and rxjs library used. i have code snippet below. I would like to rewrite in a better way.
export class AccountDetailsComponent implements OnInit {
ngOnInit() ...
- 897
0
votes
2
answers
2k
views
Angular - how to map observable inside array
I have an array of servers object where inside that array I have another observable array of objects, its key is [securityGroups].
ngOnInit(): void {
forkJoin(
this.serverService.getServer(),...
- 91
0
votes
1
answer
329
views
Angular 9 - Get value Inside Observable Array of objects
I have an array of servers object where inside that array I have another observable array of objects, its key is [securityGroups].
I have another array of securitygroupsArray, where I GET my API to ...
- 91
1
vote
1
answer
6k
views
Subscribe to one observable twice from a component doesn't work
I got several components subscribing to my data service and they are all working fine. But in one of my components, I try to subscribe twice (inside ngOnInit and ngAfterViewInit) but this doesn't work....
- 115
0
votes
1
answer
1k
views
How to wait for subscribe to finish Angular 5?
I am working on an Angular 5 app. I get an error because I have a function that executes before another function is done, hence getting a null variable. I have tried to use .map and .subscribe with ...
- 115
0
votes
1
answer
412
views
How to sequentially load data using rxjs? in each sequence might be several calls
const dates = [{start:'03/06/2020', end: '03/09/2020'}, {start:'03/12/2020', end: '03/03/2021'}, ...]
const data = service.get(page = 1, dates[0]) and service.get(page = 2, dates[0]) returns data ...
- 182
0
votes
3
answers
98
views
Why forkJoin is not working for observers?
I have tried to emulate server requests:
const _blocks$ = new BehaviorSubject<any[]>([]);
const _fields$ = new BehaviorSubject<any[]>([]);
Then I run two observers:
of(true)
....
user13314476
0
votes
2
answers
1k
views
Update value on header after Subject change
I'm working on a notification feature on a Angular 5 project. There's a property on header called notifications storing number of new notifications for that user.
I want to dynamically update that ...
- 187
-2
votes
1
answer
819
views
node_modules/angular-datatables/node_modules/rxjs/internal/types.d.ts(82,92): error TS1109: Expression expected
Full error:-
ERROR in node_modules/angular-datatables/node_modules/rxjs/internal/types.d.ts(81,44): error TS1005: ';' expected.
node_modules/angular-datatables/node_modules/rxjs/internal/types.d.ts(...
- 1
1
vote
1
answer
191
views
Multiple loading indicators shown above each other
I have an app made in ionic 3 in which I created a provider to centralize access to LoadingController.
I have implemented the provider as the code shown below, and I thought it'd be enough to control ...
0
votes
1
answer
556
views
How can I get if a particular request has been completed using forkJoin in Angular 5 as part of parallel request processing?
I have a requirement to process the list of requests in parallel using forkJoin in Angular 5. I took reference from this link RxJS recipes: ‘forkJoin’ with the progress of completion for bulk network ...
- 381
0
votes
1
answer
59
views
How can I pass the output of an http call as input to another http call in Rx JS?
Hi I am getting an error when i tries to do the following operation
export class FlightFormTemplatesStepComponent
{
tagonMessagePrefix: TagOnMessagePrefix;
ngOnInit() {
this.flightService....
0
votes
1
answer
544
views
fromEvent rxjs Angular 5 is not properly working
I have create radio buttons from an array i.e
['Yes','No']
<mat-radio-group class="tt" style="display: inline-block" formControlName="recursive" >
<div class="opt" *ngFor="let t of ...
- 517
0
votes
1
answer
263
views
How to update clock from new time data from backend SignalR in intervals
Now i have the actual UTC time. From backend in SignalR data come with new time in 30 min interval. I have to update time in frontend from time from backend in every interval. I'm starting with time ...
- 298