The service providers are constructor functions. When instantiated they must contain a property called $get, which holds the service factory function.
Questions tagged [angular-providers]
173 questions
2
votes
1 answer
How to make an HTTP call from useFactory function during provider configuration in Angular?
I have the next provider configuration
{
provide: APP_INITIALIZER,
useFactory: initializeKeycloak,
multi: true,
deps: [KeycloakService],
},
How to make an HTTP call from useFactory function…
John Doe
- 3,794
- 9
- 40
- 72
2
votes
0 answers
Angular 8 how to change the providers of material date picker according to selected material tab?
I have 2 material datepickers in my component. Each one of them is in different mat-tab.
The date picker of first tab should be as MM/YYYY, the second one should a normal date DD/MM/YYYY.
The first step of changing the value of datepicker to MM/YYYY…
alim1990
- 4,656
- 12
- 67
- 130
2
votes
1 answer
Why does ', providers: [TravelService] ' in a component prevent the RXJS Behaviour subject from sharing data across components?
@Component({
selector: 'app-overview-travel',
templateUrl: './overview-travel.component.html',
styleUrls: ['./overview-travel.component.scss'],
providers: [TravelService]
})
The code above prevented data from my shared data service (using…
Panthar
- 71
- 4
2
votes
1 answer
Angular got Circular dependency detection WARNING when using a Service with providedIn: LazyModule
I'm on Angular 8, simple app, with a Lazy loaded module and a service providedIn: 'root': everything's working.
Now I'd like to provide the service in the LazyLoadedModule, so that the service is provided only when the lazy loaded module is…
user2010955
- 3,871
- 7
- 34
- 53
2
votes
0 answers
How to access data while using Factory provider in angular4?
when i have a provider like this
{ provide: SaModelService, useValue: 'foo@yahoo.com' }
i am able to get the value by just using like this in the component
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls:…
Lijin Durairaj
- 3,341
- 11
- 31
- 50
2
votes
2 answers
No provider for function (){}! in angular 4
I am running the following command for prod build
ng serve --prod --env=qa
after running this command i don't get any errors but once i run localhost:4200/ in the browser I get the following error
Uncaught Error: No provider for function (){}!
at b…
nethra gowda
- 290
- 1
- 4
- 23
2
votes
2 answers
Angular 2 - Error: No provider for FormControl
I writing a library for the community, which needs access to the form control and listens on the value changed.
Here's how I did previously when using angular 2.3 and 4.0.
export class ValidationMessageDirective implements OnInit {
…
crossRT
- 616
- 4
- 12
- 26
2
votes
1 answer
Angular creating named instances of providers
In Angular I have a service to access a cache. The service roughly works like this (but with a lot more asynchronous behavior).
@Injectable()
export class Cache {
cache : CacheTable;
constructor(
protected name : string
) {
…
Raven
- 1,453
- 3
- 18
- 29
2
votes
2 answers
Use same selector in 2 components but different template syntax?
I have 2 components (DetailPage, ListPage) with below template :
{{ text }}
{{ content }}
{{ text }}
{{ content…
Thien Hoang
- 625
- 3
- 12
2
votes
1 answer
Angular 2 No Provider or DI error (Uncaught (in promise): Error: No provider ...)
I am getting the following exception in angular 2.
EXCEPTION: Uncaught (in promise): Error: No provider for SettingsService!
Error: DI Error
at NoProviderError.BaseError [as constructor]…
simplicity
- 31
- 4
2
votes
1 answer
different kind of provider configurations in angular
Learning angular from different resources on internet makes really confusing. everyone using different kind of patterns to write functions .Kindly throw some light on this .provider concept
I have tried .provider with 4 different pattern and all are…
xkeshav
- 53,360
- 44
- 177
- 245
2
votes
1 answer
Angular2 Provider that depends on other Providers
I have several modules within my Angular2 application, that provide Services and Configuration.
Now I'd like to include the @ngrx/store which collects the available reducers from my modules.
Here's the bootstrap code:
import {OpaqueToken} from…
Benjamin M
- 23,599
- 32
- 121
- 201
2
votes
2 answers
Angular Dependency Injection for Custom Provider $injector:modulerr
I'm struggling to get a custom provider to work with dependencies injected into it. I'm following this blog and here is my latest version of the provider in my attempts to get it working.
define([
'angular',
'ngRoute',
'require'
],…
Nikordaris
- 2,297
- 5
- 20
- 30
2
votes
2 answers
Unknown provider: $state
Hello i'm having some issues with dependency injection via the $injector service.
I'm new to angular so i'll explain how i see this from an IoC container point of view.
First off the issue : $injector is unable to resolve $state.
core.js…
eran otzap
- 12,293
- 20
- 84
- 139
1
vote
1 answer
Angular APP_INITIALIZER deps doesnt work - service is undefined
I am trying to use APP_INITIALIZER to do initial call for env values but for some reason service that have this function is undefined during runInitializers. Function is in our external library. I have tried to do this in library with the…
Jakub Šmiga
- 41
- 5