I am encountering an issue where, upon attempting to create a new page Object, it successfully sends the data to the backend but does not update the array. I have to refresh the page in order to view the entire array.
Within the frontend, I am utilizing Observable in conjunction with async.
I have tried to log the ngOnInit of the page.component.ts, but upon adding a new page and navigating to the pages, the ngOnInit is not being called.
This issue occurs when creating a new page.
Upon creating a new Page, it redirects me to the pages route where the list of pages is displayed.
However, when creating a new Page, it returns an error message stating:
ERROR Error: Error trying to diff 'Here is the name of the object'. Only arrays and iterables are allowedUpdate: As Marco mentioned, this problem arises from incorrectly treating page as an Object instead of iterating through an array.
I am having difficulty resolving this and seek your assistance.
In the page.service.ts, within the pageModel, when I add a new Object, it only returns the added Object instead of the entire array, which I believe is the root of the issue. However, I am unsure how to rectify it.
Upon refreshing the page, I can see the complete array.
The following is my updated code.
This is my code.
export class PagesService {
public baseUrl = environment.backend;
private data = new ReplaySubject<any>();
public userID = this.authService.userID;
public editDataDetails: any = [];
public subject = new Subject<any>();
private messageSource = new BehaviorSubject(this.editDataDetails);
getPageID = this.messageSource.asObservable();
constructor(private http: HttpClient, private authService: AuthService) { }
public getPages() {
return this.http.get<any>(`${this.baseUrl}/pages/${this.userID}`).subscribe(res => this.data.next(res));
}
public pageModel(): Observable<Page[]> {
return this.data.asObservable(); // Here it throws error
}
public getPage(id): Observable<any> {
return this.http.get(`${this.baseUrl}/page/${id}`);
}
public setPage(page: Page, id: string) {
const api = `${this.baseUrl}/page`;
const user_id = id;
this.http.post<any>(api, page, {
headers: { user_id }
}).subscribe(res => this.data.next(res));
}
changeMessage(message: string) {
this.messageSource.next(message)
}
public updateDate(id: string, page: Page) {
const api = `${this.baseUrl}/page/${id}`;
return this.http.put<any>(api, page).subscribe(res => this.data.next(res.data));
}
Updated Code from Answer.
public updateDate(id: string, page: Page) {
const api = `${this.baseUrl}/page/${id}`;
return this.http.put<any>(api, page).subscribe(res => {
this.lastSetOfData = res;
this.data.next(this.lastSetOfData);
});
}
}
export class Page {
_id = "";
name = "";
slogan = "";
description = "";
url = "";
telephone: number;
pageUrl: string;
website: string;
founded: number;
organization: number;
email: string;
coverImage: string;
profileImage: string;
specialty?: Specialty[];
branches: Branches[];
locations?: Location[];
phone?:Phone;
userRole?: string;
roles?: Roles[];
}
export class Roles {
role= "";
userID = "";
}
This is the HTML of page.component .
<div class="main" *ngIf="!showWeb">
<div *ngFor="let page of pages$ | async" class="card width-900">
<app-pages-list class="d-flex width-900" [page]="page" [details]="'details'"></app-pages-list>
</div>
<div>
</div>
</div>
This is the TS file.
public pages$: Observable<Page[]>;
ngOnInit(): void {
this.pageService.getPages();
this.pages$ = this.pageService.pageModel();
}
And this is the code when I create a new Page.
export class CreatePageComponent implements OnInit {
public page = new Page();
search;
public branch = [];
constructor(public router: Router,
public branchesService: BranchesService,
public authService: AuthService,
public pageService: PagesService,
public shareData: SenderService) { }
ngOnInit(): void {
}
createPage() {
this.page.url = this.page.name;
this.page.branches = this.branch;
this.page.locations = [];
this.page.specialty = [];
this.page.roles = [];
this.page.phone = this.page.phone;
this.page.pageUrl = `${this.page.name.replace(/\s/g, "")}${"-Page"}${Math.floor(Math.random() * 1000000000)}`;
this.pageService.setPage(this.page, this.authService.userID);
}
addBranch(event) {
this.branch.push(event);
this.search = "";
}
removeBranch(index) {
this.branch.splice(index, 1);
}
}