Angular 2 Ngrx 商店：更新数组

Question

我目前有一个基于 ngrx/store 架构的 angular2 CRM 应用程序。我有用于更新、列出和添加客户的 CRUD 功能，工作正常，并且都使用 ngrx/effects.

绑定到 Firebase 数据库

为了使智能组件与商店保持同步，我使用了以下代码。再次一切正常，但我不确定如何更新表单中的数组 - 请参见下面的代码：-

这是我使用商店中的数据更新表单的地方

if (this.customer) {

          this.customerForm.get('name').setValue(this.customer.name);
          this.customerForm.get('overview').setValue(this.customer.overview);
          this.customerForm.get('imagePath').setValue(this.customer.imagePath);

          console.log("ngOnChanges", this.customer);

        }

我想对地址表单做类似的事情，但不确定如何执行上述操作以填充表单中的数组对象。欢迎任何想法/建议

当我登录下面的控制台时，我实际上有地址详细信息，只需要知道如何将它们放入表单对象中即可。

Object
addresses: Array(2)
0:Object
1:Object
length:2
imagePath:"http://www.bytes.co.uk/application/themes/bytes/img/bytes-technology-group.svg"
name:"Bytes Technology Group Emirates LLC"
overview:"Kronos Re-Seller for the Middle East and GCC Countries and Egypt"
parentId:"-KcRRsAGRYASXNU3gO_F"

完整的客户详细信息智能组件

import { Component, OnInit, Input, Output, EventEmitter, ChangeDetectionStrategy, OnChanges } from '@angular/core';
import { FormBuilder, FormGroup, FormArray, Validators, FormControl } from "@angular/forms";

// Mojito Models
import { CustomerModel } from '../../models/customer-model';
import { AddressType } from '../../../shared/models/address.model';

@Component({
  selector: 'mj-customer-detail',
  templateUrl: './customer-detail.component.html',
  styleUrls: ['./customer-detail.component.scss'],
  changeDetection: ChangeDetectionStrategy.OnPush
})
export class CustomerDetailComponent implements OnInit, OnChanges {

  @Input() customer: CustomerModel;
  @Output() updatedCustomer: EventEmitter<CustomerModel> = new EventEmitter<CustomerModel>();
  @Output() showView: EventEmitter<string> = new EventEmitter<string>();
  @Output() customerId: EventEmitter<string> = new EventEmitter<string>();

  customerForm: FormGroup;
  addressForm: FormGroup;

  addressTypes: AddressType[] = [
    { "id": 1, "name": "Work" },
    { "id": 2, "name": "Home" },
  ]

  private newAddressGroup() {
    return new FormGroup({
      type: new FormControl,
      street: new FormControl,
      city: new FormControl,
      country: new FormControl,
      postalCode: new FormControl
    })
  }

  get addresses() {
    return (this.addressForm.get('addressGroups') as FormArray).controls;
  }


  constructor(private fb: FormBuilder) {

    this.customerForm = this.fb.group({
      name: [null, Validators.required],
      overview: [null, Validators.required],
      imagePath: [null, Validators.required],
    });

    this.addressForm = this.fb.group({
      addressGroups: this.fb.array([])
    });
  }

  ngOnChanges() {

    if (this.customer) {

      this.customerForm.get('name').setValue(this.customer.name);
      this.customerForm.get('overview').setValue(this.customer.overview);
      this.customerForm.get('imagePath').setValue(this.customer.imagePath);

      console.log("ngOnChanges", this.customer);

    }

  }

  ngOnInit() {



  }

  onAddAddressGroup() {
    const fa = this.addressForm.controls["addressGroups"] as FormArray;

    fa.push(this.newAddressGroup());

  }

  onSaveAddress() {
    const addresses = this.addressForm.controls["addressGroups"].value;
    this.customer.addresses = addresses;
    this.onSaveCustomer();
  }

  onSaveCustomer() {

    this.customer = Object.assign(this.customer, this.customerForm.value);
    this.updatedCustomer.emit(this.customer);
    this.showView.emit('list');

  }

  onDeleteCustomer() {

    this.customerId.emit(this.customer.$key);
    this.showView.emit('list');


  }

  goBack() {

    this.showView.emit('list');

  }

}

Answer 1

您可以通过迭代 customer.addresses 中的数据来设置值，顺便说一句，您可以缩短值的设置，而不是单独设置每个值，您可以缩短它，例如：

ngOnChanges() {
  if (this.customer) {
    // set values in customerForm
    this.customerForm.setValue({
      name: this.customer.name,
      overview: this.customer.overview;
      imagePath: this.customer.imagePath
    })
    // set controls to addressForm, formArray
    let control = <FormArray>this.addressForm.get('addressGroups');
    this.customer.addresses.forEach(x => {
       control.push(this.fb.group({...}))
    })
  }
}

请注意 this.fb.group({...}) 我不确定您那里有什么表单控件，因此您需要附加它们...类似于：

this.fb.group({myFormControlName1: x.myProperty1, myFormControlName2: x.myProperty2....})

Angular 2 Ngrx 商店：更新数组

Angular 2 Ngrx Store: Updating Array

typescript

ngrx

angular

ngrx-store