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问题描述
我有一个看起来像这样的简单表格
I have a simple form that looks like this
<form (ngSubmit)="save()" #documentEditForm="ngForm">
...
</form>
并且需要提交表格并从外部检查其有效性
and need to submit the the form and check its validity from outside
例如.以编程方式提交，或使用 标签之外的 提交.
eg. Either submit it programatically, or with a <button type="submit"> that is outside the <form> tags.
推荐答案
找到方法:
- 使用
.ngSubmit.emit() 触发提交 - 使用
.form.valid 获取表单状态
- trigger submit with
<formname>.ngSubmit.emit() - get form status with
<formname>.form.valid
示例:
<form (ngSubmit)="save()" #documentEditForm="ngForm">
...
</form>
<button class="btn-save button primary"
(click)="documentEditForm.ngSubmit.emit()"
[disabled]="!documentEditForm.form.valid">SAVE</button>
正如@yuriy-yakovenko 所指出的，您应该在组件代码中添加以下内容:
As @yuriy-yakovenko has pointed out, you should add in your component code the following:
@ViewChild('documentEditForm') documentEditForm: FormGroupDirective;
如果您还没有导入，请不要忘记导入 FormGroupDirective
And don't forget to import the FormGroupDirective if you haven't done yet
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