Angular 能够动态添加和删除表格中的行
我正在angular 7中创建一个反应式表单,能够动态添加和删除表中的行 我需要的是 我需要在用户单击add按钮后将这些控件中输入的值添加到表中 表格行应包含这些值以及最后一列中的“删除”按钮 如何使用反应式表单实现这一点 目前我的UI看起来像这样Angular 能够动态添加和删除表格中的行,angular,Angular,我正在angular 7中创建一个反应式表单,能够动态添加和删除表中的行 我需要的是 我需要在用户单击add按钮后将这些控件中输入的值添加到表中 表格行应包含这些值以及最后一列中的“删除”按钮 如何使用反应式表单实现这一点 目前我的UI看起来像这样 <form [formGroup]="frmFirm" (ngSubmit)="onSubmit()"> <div *ngIf="FirmDetails && FirmDetails.Firm" c
<form [formGroup]="frmFirm" (ngSubmit)="onSubmit()">
<div *ngIf="FirmDetails && FirmDetails.Firm" class="card-body scrollClass" style="width:100%">
<div class="form-group row">
<label for="inputEmail" class="col-md-1 col-form-label header">Websites</label>
<div class="col-md-3">
<div *ngIf="!EditMode">{{FirmDetails.Websites}}</div>
</div>
</div>
</div>
</form>
更新的用户界面
<div class="form-group row">
<label for="inputEmail" class="col-md-1 col-form-label header">Websites</label>
<div class="col-md-3">
<!-- <div *ngIf="!EditMode">{{FirmDetails.Websites[0].WEBSITE_URL}}</div> -->
<!-- <input *ngIf="EditMode" kendoTextBox [readonly]="false" class="form-control"
/> -->
<div formArrayName="websites"
*ngFor="let item of frmFirm.get('websites').controls; let i = index; let last = last">
<div [formGroupName]="i">
<input formControlName="websiteUrl" placeholder="Website Url">
<input formControlName="username" placeholder="User Name">
<input formControlName="password" placeholder="Password">
<button (click)="removeWebsite()">Remove Website</button>
<button (click)="addWebsite()" *ngIf="last">Add Website</button>
</div>
</div>
</div>
</div>
网站
删除网站
添加网站
更新组件
import { Component, Injectable, NgZone, ViewEncapsulation, ViewChild, Input } from '@angular/core';
import { OnInit } from '@angular/core';
import { FirmService } from '../services/firm.service';
import * as ClassicEditor from '@ckeditor/ckeditor5-build-classic';
import { CommonDataService} from '../services/common.data.service';
import {FormGroup, FormControl, FormBuilder, FormArray} from '@angular/forms';
@Component({
selector: 'mgr-firm',
templateUrl: './firm.component.html'
})
export class FirmComponent implements OnInit {
private Error: string;
public FirmDetails: any;
public EditMode: boolean;
public Editor = ClassicEditor;
public EditorConfig : string;
public events: string[] = [];
@Input() FirmId: number;
DateFoundedDate: Date;
public frmFirm: FormGroup;
constructor( private _fb: FormBuilder, private firmService: FirmService, private commonDataService: CommonDataService) {
}
ngOnInit() {
this.getFirmDetails();
this.initializeFormModel();
}
initializeFormModel() {
this.frmFirm = this._fb.group({
firmName: [''],
shortName: [''],
alternateName: [''],
dateFounded: [''],
firmHistory: [''],
People: [''],
websites: this._fb.array([
this.createWebsite()
])
});
}
// public addWebsite(): void {
// const websites = this.frmFirm.get('websites') as FormArray;
// websites.push(this._fb.control(''));
// }
public addWebsite(): void {
this.websites.push(this.createWebsite());
}
public removeWebsite(index: number): void {
const websites = this.frmFirm.get('websites') as FormArray;
websites.removeAt(index);
}
private createWebsite(): FormGroup {
return this._fb.group({
websiteUrl: [''],
username: [''],
password: ['']
});
}
get websites(): FormArray {
return <FormArray>this.frmFirm.get('websites');
}
setFormValues(FirmDetails: any) {
this.frmFirm.patchValue({
firmName: FirmDetails.Firm.NAME,
shortName: FirmDetails.Firm.SHORT_NAME,
alternateName: FirmDetails.Firm.ALTERNATE_NAME,
dateFounded: FirmDetails.Firm.DATE_FOUNDED,
firmHistory: FirmDetails.Firm.HISTORY_HTML,
People: FirmDetails.People
});
const websiteGroup = this._fb.group({
websiteUrl: FirmDetails.Websites[0].WEBSITE_URL,
username: FirmDetails.Websites[0].USERNAME,
password: FirmDetails.Websites[0].PASSWORD
});
this.frmFirm.setControl('websites', this._fb.array([websiteGroup]));
}
getFirmDetails() {
if (this.FirmId != null) {
this.firmService.getFirmDetails(this.FirmId)
.subscribe(data => {
this.FirmDetails = data;
this.setFormValues(this.FirmDetails);
},
err => {
this.Error = 'An error has occurred. Please contact BSG';
},
() => {
});
}
}
get dateFoundedDate(): Date {
var dateString = this.FirmDetails.Firm.DATE_FOUNDED;
var seconds = parseInt(dateString.replace(/\/Date\(([0-9]+)[^+]\//i, "$1"));
var date = new Date(seconds);
return date;
}
saveManager() {
this.firmService.createFirm(this.FirmDetails)
.subscribe(data => {
this.getFirmDetails();
this.EditMode = !this.EditMode;
},
err => {
this.Error = 'An error has occurred. Please contact BSG';
},
() => {
});
}
dateFoundedChanged(dateFoundedDate: Date) {
this.DateFoundedDate = dateFoundedDate;
}
}
import{Component,Injectable,NgZone,viewenclosuration,ViewChild,Input}来自'@angular/core';
从“@angular/core”导入{OnInit};
从“../services/firm.service”导入{FirmService};
从“@ckeditor/ckeditor5 build classic”导入*作为ClassicEditor;
从“../services/common.data.service”导入{CommonDataService};
从'@angular/forms'导入{FormGroup,FormControl,FormBuilder,FormArray};
@组成部分({
选择器:'公司经理',
templateUrl:“./firm.component.html”
})
导出类FirmComponent实现OnInit{
私有错误:字符串;
公开资料:任何;
公共编辑模式:布尔;
公共编辑器=ClassicEditor;
公共编辑器配置:字符串;
公共事件:字符串[]=[];
@Input()FirmId:数字;
DateFoundedDate:日期;
公共财务公司:FormGroup;
构造函数(private-fb:FormBuilder,private-firmService:firmService,private-commonDataService:commonDataService){
}
恩戈尼尼特(){
此参数为.getFirmDetails();
这是.initializeFormModel();
}
initializeFormModel(){
this.frmFirm=this.\u fb.group({
公司名称:[''],
短名称:[''],
备选名称:[''],
成立日期:[''],
公司历史:[''],
人:[''],
网站:这个([
this.createWebsite()
])
});
}
//public addWebsite():void{
//const websites=this.frmFirm.get('websites')作为FormArray;
//推送(这个控制(“”));
// }
public addWebsite():void{
this.websites.push(this.createWebsite());
}
public RemoveWeb(索引:编号):无效{
const websites=this.frmFirm.get('websites')作为FormArray;
网站。removeAt(索引);
}
私有createWebsite():FormGroup{
将此返回。\u fb.group({
网站URL:[''],
用户名:[''],
密码:['']
});
}
获取网站():FormArray{
返回此.frmFirm.get('websites');
}
setFormValues(FirmDetails:any){
this.frmFirm.patchValue({
firmName:FirmDetails.Firm.NAME,
shortName:FirmDetails.Firm.SHORT\u NAME,
alternateName:FirmDetails.Firm.ALTERNATE\u名称,
成立日期:FirmDetails.Firm.DATE\u成立日期,
firmHistory:FirmDetails.Firm.HISTORY\u HTML,
人物:细节,人物
});
const websiteGroup=this.\u fb.group({
网站URL:FirmDetails.Websites[0]。网站URL,
用户名:FirmDetails.Websites[0]。用户名,
密码:FirmDetails.Websites[0]。密码
});
this.frmFirm.setControl('websites',this.fb.array([websiteGroup]);
}
getFirmDetails(){
如果(this.FirmId!=null){
this.firmService.getFirmDetails(this.FirmId)
.订阅(数据=>{
this.FirmDetails=数据;
this.setFormValues(this.FirmDetails);
},
错误=>{
this.Error='发生错误。请联系BSG';
},
() => {
});
}
}
get-dateFoundedDate():日期{
var dateString=this.FirmDetails.Firm.DATE\u;
var seconds=parseInt(dateString.replace(/\/Date\([0-9]+)[^+]\//i,“$1”);
var日期=新日期(秒);
返回日期;
}
saveManager(){
this.firmService.createFirm(this.FirmDetails)
.订阅(数据=>{
此参数为.getFirmDetails();
this.EditMode=!this.EditMode;
},
错误=>{
this.Error='发生错误。请联系BSG';
},
() => {
});
}
dateFoundedChanged(dateFoundedDate:Date){
this.DateFoundedDate=DateFoundedDate;
}
}
您要找的是FormArray
Angular文档用一些例子很好地解释了需要添加和删除表单组的用例(在您的例子中,这将是带有固定细节的行)
在您的案例中应该起作用的示例
模板
<div formArrayName="companies"
*ngFor="let item of form.get('companies').controls; let i = index; let last = last">
<div [formGroupName]="i">
<input formControlName="firmName" placeholder="Firm name">
<input formControlName="shortName" placeholder="Short name">
<input formControlName="alternateName" placeholder="Alternate name">
<input formControlName="dateFounded" placeholder="Founded">
<input formControlName="firmHistory" placeholder="History">
<input formControlName="People" placeholder="People">
<button (click)="removeCompany()">Remove company</button>
<button (click)="addCompany()" *ngIf="last">Add company</button>
</div>
</div>
我有一些类似的东西,但我将它们添加为“块”而不是“行”。单击“添加另一个地址”按钮添加另一个块 我确信格式只是对布局进行一些修改的问题 更具挑战性的部分是代码。要获得可重复的字段集,需要使用FormArray,其中每个元素都是自己的FormGroup 我这里有一个完整的例子:
好吧,前面的答案让我无法回答……但是我留下了这个链接,链接提供了一个完整的工作示例。谢谢Bruno,我现在可以添加控件,但不确定在第一次加载表单时如何绑定控件。我
<div formArrayName="companies"
*ngFor="let item of form.get('companies').controls; let i = index; let last = last">
<div [formGroupName]="i">
<input formControlName="firmName" placeholder="Firm name">
<input formControlName="shortName" placeholder="Short name">
<input formControlName="alternateName" placeholder="Alternate name">
<input formControlName="dateFounded" placeholder="Founded">
<input formControlName="firmHistory" placeholder="History">
<input formControlName="People" placeholder="People">
<button (click)="removeCompany()">Remove company</button>
<button (click)="addCompany()" *ngIf="last">Add company</button>
</div>
</div>
...
public form: FormGroup;
constructor(private formBuilder: FormBuilder) {}
ngOnInit(): void {
this.form = this.formBuilder.group({
companies: this.formBuilder.array([ this.createCompany() ])
});
}
public addCompany(): void {
const companies = this.form.get('companies') as FormArray;
companies.push(this.createItem());
}
public removeCompany(index: number): void {
const companies = this.form.get('companies') as FormArray;
companies.removeAt(index);
}
private createCompany(): FormGroup {
return this.formBuilder.group({
firmName: [''],
shortName: [''],
alternateName: [''],
dateFounded: [''],
firmHistory: [''],
People: [''],
});
}
...