当我向表单添加1-n动态联系人时,我对DOM抱怨(非致命)有关重复ID的问题.任何建议,将不胜感激.
错误:[DOM]找到2个具有非唯一ID的元素#contactFirstName:
HTML:
<div id="contactsSection">
<div formArrayName="contacts">
<div class="form-group" *ngFor="let contact of
this.editForm.controls.contacts.controls; let i = index"
[formGroupName]="i">
<div>
<div class="row">
<div class="form-group col-lg-4 col-md-4 col-sm-4 col-xs-4">
<label for="contactFirstName">First Name:<sup>*</sup></label>
<input type="text" class="form-control" id="contactFirstName"
name="contactFirstName"
formControlName="contactFirstName"
required placeholder="First Name">
**Typescript Code:**
To initialize the form:
this.editProducerForm = this.fb.group({
...
contacts: this.fb.array([])
});
To add a contact dynamically to the form I call:
let control = this.editProducerForm.get('contacts') as FormArray;
control.push(this.createContact(firstName,...));
which uses this method:
createContact(firstName: string = '',...): FormGroup {
let ctc = this.fb.group({
contactId: id,
contactFirstName: [firstName, Validators.required ],
contactMobilePhone: [mobilePhone, CustomValidators.phone ],
contactAgentLicense: agentlicense,
contactLastName: [lastName, Validators.required ],
contactEmail: [email, CustomValidators.email ],
contactAgentLicenseExpirationDate: licenseExpirationDate,
contactTitle: [titleUid, Validators.required ],
ssn: ss
});
ctc.markAsUntouched();
return ctc;
}
编辑:
我尝试了为每个控件ID添加索引的解决方案.我不相信这是一个可行的解决方案,因为我必须协调代码来访问每个控件,主要是因为如果打破用于动态添加每组控件的formbuilder代码:
let ctc = this.fb.group({
contactId:id,
contactFirstName:[firstName,Validators.required],
contactMobilePhone:[mobilePhone,CustomValidators.pattern],
contactAgentLicense:agentlicense,
contactLastName:[lastName,Validators.required],…
有趣的是,当我通过事件(按钮推送)运行此代码时,DOM不会抱怨.当我作为初始化的一部分运行相同的代码时,它会抱怨.
由于每个FormGroup都有一个唯一的名称,DOM是不是足够智能,以实现一个独特的FormGroup / Control Id是唯一的,而不是查看FormGroup名称的每个Control Id独立?
最佳答案 您可以使用index生成唯一ID:
<label [for]="'contactFirstName' + i">First Name:<sup>*</sup></label>
<input type="text" class="form-control" [id]="'contactFirstName' + i" ...