模板驱动的表单将所有标记标记为已触摸 - Angular 7 [英] Template Driven Form Mark All as touched - Angular 7
问题描述
我使用模板驱动的表单进行验证.当用户在最后一个必填字段上模糊时,我想将所有字段标记为已触摸.目前我只能通过传递表单并单独执行每个字段来做到这一点.从研究中我看到有一种方法可以执行 MarkAllAsTocuhed 但它会引发错误.Angular 7 有没有更好/更正确的方法来做到这一点.我也尝试过遍历控件,但因为它是一个也不起作用的对象.
I am using template driven forms for validations. And I would like to Mark all fields as touched when the user blur on the last required field. currently I am only able to do this by passing the form and individually doing each field. From research I see there is a way to do MarkAllAsTocuhed but it's throwing an error. Is there a better/correct way to do this with Angular 7. I also tried looping through the controls but since it's an object that also does not work.
.HTML
<form #myForm="ngForm">
<mat-form-field class="input-field">
<input #field1="ngModel" name="name1"
[(ngModel)]="fieldOne" type="text" matInput placeholder="Field 1" required>
</mat-form-field>
<mat-form-field class="input-field">
<input #field2="ngModel" name="name2"
[(ngModel)]="fieldTwo" type="text" matInput placeholder="Field 2" required>
</mat-form-field>
<mat-form-field class="input-field">
<input #field2="ngModel" name="name3"
[(ngModel)]="fieldThree" type="text" matInput placeholder="Field 3" required>
</mat-form-field>
<mat-form-field class="input-field">
<input #field3="ngModel" name="name4"
[(ngModel)]="fieldFour" type="text" matInput placeholder="Field 4"
(blur)="touchAllFields(myForm.form)" required>
</mat-form-field>
</form>
.TS
touchAllFields(form){
//Working Version
form.controls.name1.markAsTouched();
form.controls.name2.markAsTouched();
form.controls.name3.markAsTouched();
form.controls.name4.markAsTouched();
form.controls.name5.markAsTouched();
form.controls.name6.markAsTouched();
form.controls.name7.markAsTouched();
form.controls.name8.markAsTouched();
//Failed Attempt
form.controls.markAllAsTouched(); //typeError: form.controls.markAllAsTouched is not a function
//Failed Attempt
for(var i = 0; i < form.controls.length; i++){
form.controls[i].markAllAsTouched(); //Failed since its an object and not an array
}
}
推荐答案
你可以试试这个:
发现 Object.keys 可以处理这个问题.
Found out that Object.keys can handle this.
Object.keys(this.form.controls).forEach(key => {
this.form.get(key).markAsTouched();
});
对于 Angular 8+,您可以使用:
For Angular 8+, you can use:
Object.keys(this.form.controls).forEach(key => {
this.form.controls[key].markAsTouched();
});
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