我试图动态地生成一个FormBuilder组,并且被生成的组对象所困扰。我有以下用于单个.html输入字段的组件。
import { Component, onInit } from '@angular/core';
import { FormBuilder, FormControl, FormGroup, ReactiveFormsModule, Validators } from '@angular/forms';
@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
job: any;
constructor(
public formBuilder: FormBuilder
) {
this.job = {
number: 'J001'
}
}
ngOnInit() {
const jobGroup: FormGroup = new FormGroup({});
for (const key in this.job) {
if (this.job.hasOwnProperty(key)) {
const control: FormControl = new FormControl(this.job[key], Validators.required);
jobGroup.addControl(this.job[key], control);
}
}
this.jobForm = this.formBuilder.group(jobGroup);
}
}
加载应用程序时,控制台中出现以下错误。
Error: Error in ./HomeComponent class HomeComponent - inline template:12:50 caused by: Cannot find control with name: 'number'
该home.component.html
如下。
<form [formGroup]="jobForm" novalidate>
<div class="form-group">
<label class="control-label" for="number">Job Number</label>
<input type="text" class="form-control" formControlName="number" id="number">
</div>
<button class="btn btn-success btn-block">Save Record</button>
</form>
我希望这是我错过的显而易见的事情。
我怀疑您在这里有两个错误:
1)this.obj[key]
应该是关键
2)您不需要formBuilder.group
使用参数进行调用FormGroup
const jobGroup: FormGroup = new FormGroup({});
for (const key in this.job) {
if (this.job.hasOwnProperty(key)) {
const control: FormControl = new FormControl(this.job[key], Validators.required);
jobGroup.addControl(key, control); // instead of this.obj[key]
}
}
this.jobForm = jobGroup; // jibGroup is already formGroup
本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句