我有表格,我想在提交时验证日期字段,我使用的是Form Builder,我该怎么做(角度方式)? 另一个问题为什么我在日期字段中看不到值published_date? 我试图搜索,但找不到输入日期字段的解决方案。
unamePattern = /^\d{1,2}\/\d{1,2}\/\d{4}$/;
ngOnInit() {
this.book =
{
id: 55,
author_name : "vv",
published_date : new Date('01/02/2018'),
title : "cc"
};
this.form = this.formBuilder.group({
title : ['', Validators.required],
author : ['', Validators.required],
datePublish: ['', Validators.pattern(this.unamePattern)],
}
);
}
<input
[(ngModel)]="book.published_date"
id="dateOfBirth"
class="form-control"
placeholder="yyyy-mm-dd"
name="dp"
ngbDatepicker
formControlName="datePublish"
#dp="ngbDatepicker">
<div class="input-group-append">
<button class="btn btn-outline-secondary" (click)="dp.toggle()" type="button">
<i class="fa fa-calendar" aria-hidden="true"></i>
</button>
</div>
答案 0 :(得分:2)
如果您可以使用momemt()
,那么很容易掌握日期时间,您可以编写自己的验证器为
import {AbstractControl} from '@angular/forms';
import * as moment from 'moment';
export class YourValidator {
static dateVaidator(AC: AbstractControl) {
if (AC && AC.value && !moment(AC.value, 'YYYY-MM-DD',true).isValid()) {
return {'dateVaidator': true};
}
return null;
}
}
在表单对象中,您可以像
一样使用它import {YourValidator} from "....";
this.form = this.formBuilder.group({
title : ['', Validators.required],
author : ['', Validators.required],
datePublish: ['', Validators.compose([Validators.required, YourValidator.dateVaidator])],
});
答案 1 :(得分:0)
对于日期验证,您可以使用ng4-validators。
npm i ng4-validators --save
导入和使用:
import { CustomValidators } from 'ng4-validators';
ngOnInit() {
this.book =
{
id: 55,
author_name : "vv",
published_date : new Date('01/02/2018'),
title : "cc"
};
this.form = this.formBuilder.group({
title : ['', Validators.required],
author : ['', Validators.required],
datePublish: ['', CustomValidators.date,
}
);
}