I have an inquiry regarding passing data in Angular.
Unlike the usual structure of
<parent><child [data]=parent.data></child></parent><container>
<navbar>
<summary></summary>
<child-summary><child-summary>
</navbar>
<content></content>
</container>
In the <summary /> section, I have a select element that sends values to both <child-summary /> and <content />.
The onSelect method is triggered correctly with (change) inside the <summary /> component.
I have attempted to use @Input, @Output, and @EventEmitter directives, but I am unable to retrieve the event as @Input of the component without following the parent/child pattern. All the examples I have come across show a direct relationship between components.
EDIT: Example using BehaviorSubject is not working as expected (all services connected to the API function properly, only the observable is fired at the start but not when the select value changes).
Shared service = company.service.ts (used for retrieving company data)
import { Injectable } from '@angular/core';
import { Headers, Http, Response } from '@angular/http';
import { BehaviorSubject } from 'rxjs/BehaviorSubject';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/toPromise';
@Injectable()
export class SrvCompany {
private accountsNumber = new BehaviorSubject<string[]>([]);
currentAccountsNumber = this.accountsNumber.asObservable();
changeMessage(accountsNumber: string[]) {
this.accountsNumber.next(accountsNumber);
}
private _companyUrl = 'api/tiers/';
constructor(private http: Http) { }
getSociete(): Promise<Response> {
let url = this._companyUrl;
return this.http.get(url).toPromise();
}
}
invoice.component.ts (the "child")
import { Component, OnInit, Input } from '@angular/core';
import { Headers, Http, Response } from '@angular/http';
import { SrvInvoice } from './invoice.service';
import { SrvCompany } from '../company/company.service';
@Component({
selector: 'invoice',
templateUrl: 'tsScripts/invoice/invoice.html',
providers: [SrvInvoice, SrvCompany]
})
export class InvoiceComponent implements OnInit {
invoice: any;
constructor(private srvInvoice: SrvInvoice, private srvCompany: SrvCompany)
{
}
ngOnInit(): void {
//this.getInvoice("F001");
// Invoice data is linked to accounts number from company.
this.srvCompany.currentAccountsNumber.subscribe(accountsNumber => {
console.log(accountsNumber);
if (accountsNumber.length > 0) {
this.srvInvoice.getInvoice(accountsNumber).then(data => this.invoice = data.json());
}
});
}
//getInvoice(id: any) {
// this.srvInvoice.getInvoice(id).then(data => this.invoice = data.json());
//}
}
company.component.ts (the triggering "parent")
import { Component, Inject, OnInit, Input } from '@angular/core';
import { Headers, Http, Response } from '@angular/http';
import { SrvCompany } from './company.service';
@Component({
selector: 'company',
templateUrl: 'tsScripts/company/company.html',
providers: [SrvCompany]
})
export class CompanyComponent implements OnInit {
societes: any[];
soc: Response[]; // debug purpose
selectedSociete: any;
ville: any;
ref: any;
cp: any;
accountNumber: any[];
constructor(private srvSociete: SrvCompany)
{
}
ngOnInit(): void {
this.getSocietes();
}
getSocietes(): void {
this.srvSociete.getSociete()
.then(data => this.societes = data.json())
.then(data => this.selectItem(this.societes[0].Id));
}
selectItem(value: any) {
this.selectedSociete = this.societes.filter((item: any) => item.Id === value)[0];
this.cp = this.selectedSociete.CodePostal;
this.ville = this.selectedSociete.Ville;
this.ref = this.selectedSociete.Id;
this.accountNumber = this.selectedSociete.Accounts;
console.log(this.accountNumber);
this.srvSociete.changeMessage(this.accountNumber);
}
}