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router.selectors.ts
import { ActivatedRouteSnapshot } from '@angular/router';
import * as fromRouter from '@ngrx/router-store';
import { createFeatureSelector, createSelector } from '@ngrx/store';
export interface State {
router: fromRouter.RouterReducerState;
}
export const selectRouter = createFeatureSelector<
State,
fromRouter.RouterReducerState
>('router');
export const {
selectQueryParams: selectQueryParamsNgRx,
selectQueryParam,
selectRouteData,
selectUrl
} = fromRouter.getSelectors(selectRouter);
const getRouteParams = (route: ActivatedRouteSnapshot) => {
if (route.children.length === 0) {
return route.params;
}
const combinedChildParams = route.children.reduce(
(prev, childRoute) => ({ ...prev, ...getRouteParams(childRoute) }),
{}
);
return {
...route.params,
...combinedChildParams
};
};
export const selectRouteParams = createSelector(selectRouter, routerState => {
if(!routerState?.state?.root) {
return {};
}
return getRouteParams(routerState.state.root);
});
export const selectRouteParam = (routeParam: string) => createSelector(selectRouteParams, (routeParams) => {
return routeParams[routeParam];
})
export const selectQueryParams = createSelector(
selectQueryParamsNgRx,
params => params || {}
);
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