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115046: Fixed issue where relationsToItems would never emit when an empty array was passed to it

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This commit is contained in:
Alexandre Vryghem
2024-06-03 13:50:42 +02:00
parent 3253e0e785
commit 4ccd459b1a
1 changed files with 11 additions and 8 deletions
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19
src/app/item-page/simple/item-types/shared/item-relationships-utils.ts
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@@ -2,6 +2,7 @@ import { InjectionToken } from '@angular/core';
import {
combineLatest as observableCombineLatest,
Observable,
of as observableOf,
zip as observableZip,
} from 'rxjs';
import {
@@ -53,17 +54,19 @@ export const compareArraysUsingIds = <T extends { id: string }>() =>
/**
* Operator for turning a list of relationships into a list of the relevant items
* @param {string} thisId The item's id of which the relations belong to
* @returns {(source: Observable<Relationship[]>) => Observable<Item[]>}
*/
export const relationsToItems = (thisId: string) =>
export const relationsToItems = (thisId: string): (source: Observable<Relationship[]>) => Observable<Item[]> =>
(source: Observable<Relationship[]>): Observable<Item[]> =>
source.pipe(
mergeMap((rels: Relationship[]) =>
observableZip(
...rels.map((rel: Relationship) => observableCombineLatest(rel.leftItem, rel.rightItem)),
),
),
map((arr) =>
mergeMap((relationships: Relationship[]) => {
if (relationships.length === 0) {
return observableOf([]);
}
return observableZip(
...relationships.map((rel: Relationship) => observableCombineLatest([rel.leftItem, rel.rightItem])),
);
}),
map((arr: [RemoteData<Item>, RemoteData<Item>][]) =>
arr
.filter(([leftItem, rightItem]) => leftItem.hasSucceeded && rightItem.hasSucceeded)
.map(([leftItem, rightItem]) => {