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Merge pull request #1096 from atmire/fix-1094

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Fix support for adding and removing relationships in relationship-only fields in the submission
This commit is contained in:
Tim Donohue
2021-04-14 11:45:50 -05:00
committed by GitHub
parent 9c0c1b408c 6d612c39c0
commit 9920aaba97
6 changed files with 151 additions and 76 deletions
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64
src/app/core/shared/operators.ts
View File

@@ -45,32 +45,32 @@ export const sendRequest = (requestService: RequestService) =>
(source: Observable<RestRequest>): Observable<RestRequest> =>
source.pipe(tap((request: RestRequest) => requestService.send(request)));
export const getRemoteDataPayload = () =>
<T>(source: Observable<RemoteData<T>>): Observable<T> =>
export const getRemoteDataPayload = <T>() =>
(source: Observable<RemoteData<T>>): Observable<T> =>
source.pipe(map((remoteData: RemoteData<T>) => remoteData.payload));
export const getPaginatedListPayload = () =>
<T>(source: Observable<PaginatedList<T>>): Observable<T[]> =>
export const getPaginatedListPayload = <T>() =>
(source: Observable<PaginatedList<T>>): Observable<T[]> =>
source.pipe(map((list: PaginatedList<T>) => list.page));
export const getAllCompletedRemoteData = () =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const getAllCompletedRemoteData = <T>() =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
source.pipe(filter((rd: RemoteData<T>) => hasValue(rd) && rd.hasCompleted));
export const getFirstCompletedRemoteData = () =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const getFirstCompletedRemoteData = <T>() =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
source.pipe(getAllCompletedRemoteData(), take(1));
export const takeUntilCompletedRemoteData = () =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const takeUntilCompletedRemoteData = <T>() =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
source.pipe(takeWhile((rd: RemoteData<T>) => hasNoValue(rd) || rd.isLoading, true));
export const getFirstSucceededRemoteData = () =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const getFirstSucceededRemoteData = <T>() =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
source.pipe(filter((rd: RemoteData<T>) => rd.hasSucceeded), take(1));
export const getFirstSucceededRemoteWithNotEmptyData = () =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const getFirstSucceededRemoteWithNotEmptyData = <T>() =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
source.pipe(find((rd: RemoteData<T>) => rd.hasSucceeded && isNotEmpty(rd.payload)));
/**
@@ -83,8 +83,8 @@ export const getFirstSucceededRemoteWithNotEmptyData = () =>
* These operators were created as a first step in refactoring
* out all the instances where this is used incorrectly.
*/
export const getFirstSucceededRemoteDataPayload = () =>
<T>(source: Observable<RemoteData<T>>): Observable<T> =>
export const getFirstSucceededRemoteDataPayload = <T>() =>
(source: Observable<RemoteData<T>>): Observable<T> =>
source.pipe(
getFirstSucceededRemoteData(),
getRemoteDataPayload()
@@ -100,8 +100,8 @@ export const getFirstSucceededRemoteDataPayload = () =>
* These operators were created as a first step in refactoring
* out all the instances where this is used incorrectly.
*/
export const getFirstSucceededRemoteDataWithNotEmptyPayload = () =>
<T>(source: Observable<RemoteData<T>>): Observable<T> =>
export const getFirstSucceededRemoteDataWithNotEmptyPayload = <T>() =>
(source: Observable<RemoteData<T>>): Observable<T> =>
source.pipe(
getFirstSucceededRemoteWithNotEmptyData(),
getRemoteDataPayload()
@@ -117,8 +117,8 @@ export const getFirstSucceededRemoteDataWithNotEmptyPayload = () =>
* These operators were created as a first step in refactoring
* out all the instances where this is used incorrectly.
*/
export const getAllSucceededRemoteDataPayload = () =>
<T>(source: Observable<RemoteData<T>>): Observable<T> =>
export const getAllSucceededRemoteDataPayload = <T>() =>
(source: Observable<RemoteData<T>>): Observable<T> =>
source.pipe(
getAllSucceededRemoteData(),
getRemoteDataPayload()
@@ -138,8 +138,8 @@ export const getAllSucceededRemoteDataPayload = () =>
* These operators were created as a first step in refactoring
* out all the instances where this is used incorrectly.
*/
export const getFirstSucceededRemoteListPayload = () =>
<T>(source: Observable<RemoteData<PaginatedList<T>>>): Observable<T[]> =>
export const getFirstSucceededRemoteListPayload = <T>() =>
(source: Observable<RemoteData<PaginatedList<T>>>): Observable<T[]> =>
source.pipe(
getFirstSucceededRemoteData(),
getRemoteDataPayload(),
@@ -160,8 +160,8 @@ export const getFirstSucceededRemoteListPayload = () =>
* These operators were created as a first step in refactoring
* out all the instances where this is used incorrectly.
*/
export const getAllSucceededRemoteListPayload = () =>
<T>(source: Observable<RemoteData<PaginatedList<T>>>): Observable<T[]> =>
export const getAllSucceededRemoteListPayload = <T>() =>
(source: Observable<RemoteData<PaginatedList<T>>>): Observable<T[]> =>
source.pipe(
getAllSucceededRemoteData(),
getRemoteDataPayload(),
@@ -174,8 +174,8 @@ export const getAllSucceededRemoteListPayload = () =>
* @param router The router used to navigate to a new page
* @param authService Service to check if the user is authenticated
*/
export const redirectOn4xx = (router: Router, authService: AuthService) =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const redirectOn4xx = <T>(router: Router, authService: AuthService) =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
observableCombineLatest(source, authService.isAuthenticated()).pipe(
map(([rd, isAuthenticated]: [RemoteData<T>, boolean]) => {
if (rd.hasFailed) {
@@ -229,16 +229,16 @@ export const returnEndUserAgreementUrlTreeOnFalse = (router: Router, redirect: s
return hasAgreed ? hasAgreed : router.createUrlTree([getEndUserAgreementPath()], { queryParams });
}));
export const getFinishedRemoteData = () =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const getFinishedRemoteData = <T>() =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
source.pipe(find((rd: RemoteData<T>) => !rd.isLoading));
export const getAllSucceededRemoteData = () =>
<T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
export const getAllSucceededRemoteData = <T>() =>
(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
source.pipe(filter((rd: RemoteData<T>) => rd.hasSucceeded));
export const toDSpaceObjectListRD = () =>
<T extends DSpaceObject>(source: Observable<RemoteData<PaginatedList<SearchResult<T>>>>): Observable<RemoteData<PaginatedList<T>>> =>
export const toDSpaceObjectListRD = <T extends DSpaceObject>() =>
(source: Observable<RemoteData<PaginatedList<SearchResult<T>>>>): Observable<RemoteData<PaginatedList<T>>> =>
source.pipe(
filter((rd: RemoteData<PaginatedList<SearchResult<T>>>) => rd.hasSucceeded),
map((rd: RemoteData<PaginatedList<SearchResult<T>>>) => {

4
src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-form-control-container.component.html
View File

@@ -11,7 +11,7 @@
'd-none': value?.isVirtual && (model.hasSelectableMetadata || context?.index > 0)}">
<div [ngClass]="getClass('grid', 'control')">
<ng-container #componentViewContainer></ng-container>
<small *ngIf="hasHint && (model.repeatable === false || context?.index === context?.context?.groups?.length - 1) && (!showErrorMessages || errorMessages.length === 0)"
<small *ngIf="hasHint && ((model.repeatable === false && (isRelationship === false || value?.value === null)) || (model.repeatable === true && context?.index === context?.context?.groups?.length - 1)) && (!showErrorMessages || errorMessages.length === 0)"
class="text-muted ds-hint" [innerHTML]="model.hint | translate" [ngClass]="getClass('element', 'hint')"></small>
<!-- In case of repeatable fields show empty space for all elements except the first -->
<div *ngIf="context?.index !== null
@@ -35,7 +35,7 @@
<option *ngFor="let lang of model.languageCodes" [value]="lang.code">{{lang.display}}</option>
</select>
</div>
<div *ngIf="isRelationship && !isVirtual()" class="col-auto text-center">
<div *ngIf="isRelationship" class="col-auto text-center">
<button class="btn btn-secondary"
type="button"
ngbTooltip="{{'form.lookup-help' | translate}}"

18
src/app/submission/edit/submission-edit.component.spec.ts
View File

@@ -17,12 +17,14 @@ import { RouterStub } from '../../shared/testing/router.stub';
import { ActivatedRouteStub } from '../../shared/testing/active-router.stub';
import { mockSubmissionObject } from '../../shared/mocks/submission.mock';
import { createSuccessfulRemoteDataObject$ } from '../../shared/remote-data.utils';
import { ItemDataService } from '../../core/data/item-data.service';
describe('SubmissionEditComponent Component', () => {
let comp: SubmissionEditComponent;
let fixture: ComponentFixture<SubmissionEditComponent>;
let submissionServiceStub: SubmissionServiceStub;
let itemDataService: ItemDataService;
let router: RouterStub;
const submissionId = '826';
@@ -30,6 +32,9 @@ describe('SubmissionEditComponent Component', () => {
const submissionObject: any = mockSubmissionObject;
beforeEach(waitForAsync(() => {
itemDataService = jasmine.createSpyObj('itemDataService', {
findByHref: createSuccessfulRemoteDataObject$(submissionObject.item),
});
TestBed.configureTestingModule({
imports: [
TranslateModule.forRoot(),
@@ -41,6 +46,7 @@ describe('SubmissionEditComponent Component', () => {
providers: [
{ provide: NotificationsService, useClass: NotificationsServiceStub },
{ provide: SubmissionService, useClass: SubmissionServiceStub },
{ provide: ItemDataService, useValue: itemDataService },
{ provide: TranslateService, useValue: getMockTranslateService() },
{ provide: Router, useValue: new RouterStub() },
{ provide: ActivatedRoute, useValue: route },
@@ -63,7 +69,7 @@ describe('SubmissionEditComponent Component', () => {
router = null;
});
it('should init properly when a valid SubmissionObject has been retrieved', fakeAsync(() => {
it('should init properly when a valid SubmissionObject has been retrieved',() => {
route.testParams = { id: submissionId };
submissionServiceStub.retrieveSubmission.and.returnValue(
@@ -78,9 +84,9 @@ describe('SubmissionEditComponent Component', () => {
expect(comp.sections).toBe(submissionObject.sections);
expect(comp.submissionDefinition).toBe(submissionObject.submissionDefinition);
}));
});
it('should redirect to mydspace when an empty SubmissionObject has been retrieved', fakeAsync(() => {
it('should redirect to mydspace when an empty SubmissionObject has been retrieved',() => {
route.testParams = { id: submissionId };
submissionServiceStub.retrieveSubmission.and.returnValue(createSuccessfulRemoteDataObject$({})
@@ -90,9 +96,9 @@ describe('SubmissionEditComponent Component', () => {
expect(router.navigate).toHaveBeenCalled();
}));
});
it('should not has effects when an invalid SubmissionObject has been retrieved', fakeAsync(() => {
it('should not has effects when an invalid SubmissionObject has been retrieved',() => {
route.testParams = { id: submissionId };
submissionServiceStub.retrieveSubmission.and.returnValue(observableOf(null));
@@ -104,6 +110,6 @@ describe('SubmissionEditComponent Component', () => {
expect(comp.selfUrl).toBeUndefined();
expect(comp.sections).toBeUndefined();
expect(comp.submissionDefinition).toBeUndefined();
}));
});
});

82
src/app/submission/edit/submission-edit.component.ts
View File

@@ -2,11 +2,11 @@ import { ChangeDetectorRef, Component, OnDestroy, OnInit } from '@angular/core';
import { ActivatedRoute, ParamMap, Router } from '@angular/router';
import { Subscription } from 'rxjs';
import { filter, switchMap } from 'rxjs/operators';
import { filter, switchMap, debounceTime } from 'rxjs/operators';
import { TranslateService } from '@ngx-translate/core';
import { WorkspaceitemSectionsObject } from '../../core/submission/models/workspaceitem-sections.model';
import { hasValue, isEmpty, isNotNull } from '../../shared/empty.util';
import { hasValue, isEmpty, isNotNull, isNotEmptyOperator } from '../../shared/empty.util';
import { SubmissionDefinitionsModel } from '../../core/config/models/config-submission-definitions.model';
import { SubmissionService } from '../submission.service';
import { NotificationsService } from '../../shared/notifications/notifications.service';
@@ -14,6 +14,9 @@ import { SubmissionObject } from '../../core/submission/models/submission-object
import { Collection } from '../../core/shared/collection.model';
import { RemoteData } from '../../core/data/remote-data';
import { Item } from '../../core/shared/item.model';
import { getAllSucceededRemoteData } from '../../core/shared/operators';
import { ItemDataService } from '../../core/data/item-data.service';
import { BehaviorSubject } from 'rxjs/internal/BehaviorSubject';
/**
* This component allows to edit an existing workspaceitem/workflowitem.
@@ -60,6 +63,16 @@ export class SubmissionEditComponent implements OnDestroy, OnInit {
* @type {Array}
*/
private subs: Subscription[] = [];
/**
* BehaviorSubject containing the self link to the item for this submission
* @private
*/
private itemLink$: BehaviorSubject<string> = new BehaviorSubject(undefined);
/**
* The item for this submission.
*/
public item: Item;
/**
@@ -69,6 +82,7 @@ export class SubmissionEditComponent implements OnDestroy, OnInit {
* @param {NotificationsService} notificationsService
* @param {ActivatedRoute} route
* @param {Router} router
* @param {ItemDataService} itemDataService
* @param {SubmissionService} submissionService
* @param {TranslateService} translate
*/
@@ -76,6 +90,7 @@ export class SubmissionEditComponent implements OnDestroy, OnInit {
private notificationsService: NotificationsService,
private route: ActivatedRoute,
private router: Router,
private itemDataService: ItemDataService,
private submissionService: SubmissionService,
private translate: TranslateService) {
}
@@ -84,32 +99,47 @@ export class SubmissionEditComponent implements OnDestroy, OnInit {
* Retrieve workspaceitem/workflowitem from server and initialize all instance variables
*/
ngOnInit() {
this.subs.push(this.route.paramMap.pipe(
switchMap((params: ParamMap) => this.submissionService.retrieveSubmission(params.get('id'))),
// NOTE new submission is retrieved on the browser side only, so get null on server side rendering
filter((submissionObjectRD: RemoteData<SubmissionObject>) => isNotNull(submissionObjectRD))
).subscribe((submissionObjectRD: RemoteData<SubmissionObject>) => {
if (submissionObjectRD.hasSucceeded) {
if (isEmpty(submissionObjectRD.payload)) {
this.notificationsService.info(null, this.translate.get('submission.general.cannot_submit'));
this.router.navigate(['/mydspace']);
this.subs.push(
this.route.paramMap.pipe(
switchMap((params: ParamMap) => this.submissionService.retrieveSubmission(params.get('id'))),
// NOTE new submission is retrieved on the browser side only, so get null on server side rendering
filter((submissionObjectRD: RemoteData<SubmissionObject>) => isNotNull(submissionObjectRD))
).subscribe((submissionObjectRD: RemoteData<SubmissionObject>) => {
if (submissionObjectRD.hasSucceeded) {
if (isEmpty(submissionObjectRD.payload)) {
this.notificationsService.info(null, this.translate.get('submission.general.cannot_submit'));
this.router.navigate(['/mydspace']);
} else {
this.submissionId = submissionObjectRD.payload.id.toString();
this.collectionId = (submissionObjectRD.payload.collection as Collection).id;
this.selfUrl = submissionObjectRD.payload._links.self.href;
this.sections = submissionObjectRD.payload.sections;
this.itemLink$.next(submissionObjectRD.payload._links.item.href);
this.item = submissionObjectRD.payload.item;
this.submissionDefinition = (submissionObjectRD.payload.submissionDefinition as SubmissionDefinitionsModel);
}
} else {
this.submissionId = submissionObjectRD.payload.id.toString();
this.collectionId = (submissionObjectRD.payload.collection as Collection).id;
this.selfUrl = submissionObjectRD.payload._links.self.href;
this.sections = submissionObjectRD.payload.sections;
this.item = submissionObjectRD.payload.item as Item;
this.submissionDefinition = (submissionObjectRD.payload.submissionDefinition as SubmissionDefinitionsModel);
this.changeDetectorRef.detectChanges();
if (submissionObjectRD.statusCode === 404) {
// redirect to not found page
this.router.navigate(['/404'], { skipLocationChange: true });
}
// TODO handle generic error
}
} else {
if (submissionObjectRD.statusCode === 404) {
// redirect to not found page
this.router.navigate(['/404'], { skipLocationChange: true });
}
// TODO handle generic error
}
}));
}),
this.itemLink$.pipe(
isNotEmptyOperator(),
switchMap((itemLink: string) =>
this.itemDataService.findByHref(itemLink)
),
getAllSucceededRemoteData(),
// Multiple sources can update the item in quick succession.
// We only want to rerender the form if the item is unchanged for some time
debounceTime(300),
).subscribe((itemRd: RemoteData<Item>) => {
this.item = itemRd.payload;
this.changeDetectorRef.detectChanges();
}),
);
}
/**

19
src/app/submission/submit/submission-submit.component.spec.ts
View File

@@ -15,18 +15,24 @@ import { RouterStub } from '../../shared/testing/router.stub';
import { mockSubmissionObject } from '../../shared/mocks/submission.mock';
import { SubmissionSubmitComponent } from './submission-submit.component';
import { ActivatedRouteStub } from '../../shared/testing/active-router.stub';
import { ItemDataService } from '../../core/data/item-data.service';
import { createSuccessfulRemoteDataObject$ } from '../../shared/remote-data.utils';
describe('SubmissionSubmitComponent Component', () => {
let comp: SubmissionSubmitComponent;
let fixture: ComponentFixture<SubmissionSubmitComponent>;
let submissionServiceStub: SubmissionServiceStub;
let itemDataService: ItemDataService;
let router: RouterStub;
const submissionId = '826';
const submissionObject: any = mockSubmissionObject;
beforeEach(waitForAsync(() => {
itemDataService = jasmine.createSpyObj('itemDataService', {
findByHref: createSuccessfulRemoteDataObject$(submissionObject.item),
});
TestBed.configureTestingModule({
imports: [
TranslateModule.forRoot(),
@@ -38,6 +44,7 @@ describe('SubmissionSubmitComponent Component', () => {
providers: [
{ provide: NotificationsService, useClass: NotificationsServiceStub },
{ provide: SubmissionService, useClass: SubmissionServiceStub },
{ provide: ItemDataService, useValue: itemDataService },
{ provide: TranslateService, useValue: getMockTranslateService() },
{ provide: Router, useValue: new RouterStub() },
{ provide: ActivatedRoute, useValue: new ActivatedRouteStub() },
@@ -60,7 +67,7 @@ describe('SubmissionSubmitComponent Component', () => {
router = null;
});
it('should init properly when a valid SubmissionObject has been retrieved', fakeAsync(() => {
it('should init properly when a valid SubmissionObject has been retrieved',() => {
submissionServiceStub.createSubmission.and.returnValue(observableOf(submissionObject));
@@ -72,9 +79,9 @@ describe('SubmissionSubmitComponent Component', () => {
expect(comp.sections).toBe(submissionObject.sections);
expect(comp.submissionDefinition).toBe(submissionObject.submissionDefinition);
}));
});
it('should redirect to mydspace when an empty SubmissionObject has been retrieved', fakeAsync(() => {
it('should redirect to mydspace when an empty SubmissionObject has been retrieved',() => {
submissionServiceStub.createSubmission.and.returnValue(observableOf({}));
@@ -82,9 +89,9 @@ describe('SubmissionSubmitComponent Component', () => {
expect(router.navigate).toHaveBeenCalled();
}));
});
it('should not has effects when an invalid SubmissionObject has been retrieved', fakeAsync(() => {
it('should not has effects when an invalid SubmissionObject has been retrieved',() => {
submissionServiceStub.createSubmission.and.returnValue(observableOf(null));
@@ -94,6 +101,6 @@ describe('SubmissionSubmitComponent Component', () => {
expect(comp.collectionId).toBeUndefined();
expect(comp.selfUrl).toBeUndefined();
expect(comp.submissionDefinition).toBeUndefined();
}));
});
});

40
src/app/submission/submit/submission-submit.component.ts
View File

@@ -3,7 +3,7 @@ import { ActivatedRoute, Router } from '@angular/router';
import { Subscription } from 'rxjs';
import { hasValue, isEmpty, isNotNull } from '../../shared/empty.util';
import { hasValue, isEmpty, isNotNull, isNotEmptyOperator } from '../../shared/empty.util';
import { SubmissionDefinitionsModel } from '../../core/config/models/config-submission-definitions.model';
import { TranslateService } from '@ngx-translate/core';
import { NotificationsService } from '../../shared/notifications/notifications.service';
@@ -12,6 +12,11 @@ import { SubmissionObject } from '../../core/submission/models/submission-object
import { Collection } from '../../core/shared/collection.model';
import { Item } from '../../core/shared/item.model';
import { WorkspaceitemSectionsObject } from '../../core/submission/models/workspaceitem-sections.model';
import { BehaviorSubject } from 'rxjs/internal/BehaviorSubject';
import { switchMap, debounceTime } from 'rxjs/operators';
import { getAllSucceededRemoteData } from '../../core/shared/operators';
import { RemoteData } from '../../core/data/remote-data';
import { ItemDataService } from '../../core/data/item-data.service';
/**
* This component allows to submit a new workspaceitem.
@@ -28,6 +33,16 @@ export class SubmissionSubmitComponent implements OnDestroy, OnInit {
* @type {string}
*/
public collectionId: string;
/**
* BehaviorSubject containing the self link to the item for this submission
* @private
*/
private itemLink$: BehaviorSubject<string> = new BehaviorSubject(undefined);
/**
* The item for this submission.
*/
public item: Item;
/**
@@ -71,6 +86,7 @@ export class SubmissionSubmitComponent implements OnDestroy, OnInit {
*
* @param {ChangeDetectorRef} changeDetectorRef
* @param {NotificationsService} notificationsService
* @param {ItemDataService} itemDataService
* @param {SubmissionService} submissionService
* @param {Router} router
* @param {TranslateService} translate
@@ -80,13 +96,16 @@ export class SubmissionSubmitComponent implements OnDestroy, OnInit {
constructor(private changeDetectorRef: ChangeDetectorRef,
private notificationsService: NotificationsService,
private router: Router,
private itemDataService: ItemDataService,
private submissionService: SubmissionService,
private translate: TranslateService,
private viewContainerRef: ViewContainerRef,
private route: ActivatedRoute) {
this.route
.queryParams
.subscribe((params) => { this.collectionParam = (params.collection); });
.subscribe((params) => {
this.collectionParam = (params.collection);
});
}
/**
@@ -108,11 +127,24 @@ export class SubmissionSubmitComponent implements OnDestroy, OnInit {
this.selfUrl = submissionObject._links.self.href;
this.submissionDefinition = (submissionObject.submissionDefinition as SubmissionDefinitionsModel);
this.submissionId = submissionObject.id;
this.itemLink$.next(submissionObject._links.item.href);
this.item = submissionObject.item as Item;
this.changeDetectorRef.detectChanges();
}
}
})
}),
this.itemLink$.pipe(
isNotEmptyOperator(),
switchMap((itemLink: string) =>
this.itemDataService.findByHref(itemLink)
),
getAllSucceededRemoteData(),
// Multiple sources can update the item in quick succession.
// We only want to rerender the form if the item is unchanged for some time
debounceTime(300),
).subscribe((itemRd: RemoteData<Item>) => {
this.item = itemRd.payload;
this.changeDetectorRef.detectChanges();
})
);
}