Thanks Sir.
I tried the same.
After inheriting I am getting the following error.
ERROR TypeError: this.roleService.getData is not a function
at
AppRoleListComponent.push../src/app/role/role-list/role-list.component.ts.AppRoleListComponent.ngOnInit
(role-list.component.ts:41)
at checkAndUpdateDirectiveInline (core.js:9250)
at checkAndUpdateNodeInline (core.js:10514)
at checkAndUpdateNode (core.js:10476)
at debugCheckAndUpdateNode (core.js:11109)
at debugCheckDirectivesFn (core.js:11069)
at Object.eval [as updateDirectives] (AppRoleComponent.html:9)
at Object.debugUpdateDirectives [as updateDirectives] (core.js:11061)
at checkAndUpdateView (core.js:10458)
at callViewAction (core.js:10699)
How can I resolve this?
On searching the internet, I figure that it is some known bug in Angular.
Regards,
Partha
On Friday, 28 September 2018 12:42:09 UTC+5:30, Zlatko Đurić wrote:
>
> In short, yes, you can extend a TypeScript class or implement an
> interface, and you only need to import the class in the component itself.
> You can even import a class from a library in your Node modules folder.
> But there are two things to be aware of:
> - you have to make sure that the dependencies are satisfied. E.g. If the
> abstract class takes a UserService as a constructor parameter, your module
> (or ultimately your root module) need to provide that service. Sounds
> obvious, but worth pointing out.
> - the bigger potential issue is that you're extending the TypeScript
> class, not an Angular-specific component. That means that you have to apply
> angular decorators to the new class (Injectable, Component etc), anything
> on the parent class is simply not there.
>
>
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