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[英]How to patch value in nested form array which is insider another form array in angular?
[英]How to patch a nested form Array?
我有來自表單(模態)的數據,我必須將其修補到另一個表單(折疊)中。 這是數據來自的表單。
formInitializer() {
this.agrmntsForm = this.formBuilder.group({
sales_price: new FormControl(''),
closing_cost_support: new FormControl(''),
financing: new FormControl(''),
contract_date: new FormControl(''),
inspection_period: new FormControl(''),
closing_date: new FormControl(''),
contacts: this.formBuilder.array([]),
});
}
這是我試圖將數據修補到的表單:
mainFormInitializer() {
this.mainForm = this.formBuilder.group({
agreements: this.formBuilder.array([]),
});
}
目前我正在修補第一個表單(模態)提交上的數據。 它確實修補了第一個數組,但我很難修補其中的嵌套表單數組。
這是修補表單的代碼:
patchControls(formValue) {
const control = <FormArray>this.mainForm.get('agreements');
// const control2 = <FormArray>this.mainForm.get('contacts');
console.log('form here', this.mainForm.controls.contacts);
for (const obj of formValue) {
const addrCtrl = this.createAgreementsGroup();
const contactsCtrl = this.createContactsCtrl();
addrCtrl.patchValue(obj);
control.push(addrCtrl);
}
}
我已將代碼添加到stackblitz
您需要更新以下方法:
createAgreementsGroup(obj) {
return this.formBuilder.group({
closing_cost_support: [obj.closing_cost_support],
closing_date: [obj.closing_date],
contract_date: [obj.contract_date],
financing: [obj.financing],
inspection_period: [obj.inspection_period],
sales_price: [obj.sales_price],
contacts: this.formBuilder.array(this.createContactsCtrl(obj.contacts))
});
}
createContactsCtrl(data) {
console.log('contacts', data);
const formArray = [];
for(let contact of data){
formArray.push(
this.formBuilder.group({
agreement_type: [contact.agreement_type],
company: [contact.company],
email: [contact.email],
name: [contact.name],
phone_number: [contact.phone_number],
})
);
}
return formArray;
}
patchControls(data2) {
const control = <FormArray>this.mainForm.get('agreements');
for (const obj of data2) {
const addrCtrl = this.createAgreementsGroup(obj);
control.push(addrCtrl);
}
}
檢查此堆棧閃電戰
刪除了一些重復的代碼,您需要重新啟動agrmntsForm
而不是重置,因為如果添加多個聯系人,其值將被重置,但在模型中添加下一次協議表單時不會保留聯系人數組條目。
在下面的示例中,您可以在主表單中添加/刪除聯系人
迭代模板中的contacts
<div *ngFor="let contact of getContactFG(agreementIndex);let contactIndex = index" >
<div [formGroupName]="contactIndex">
Contact {{ contactIndex + 1 }} <br />
agreement_type :
<input type="text" formControlName="agreement_type" /><br />
company
<input type="text" formControlName="company" /><br />
email :
<input type="text" formControlName="email" /><br />
name:
<input type="text" formControlName="name" /><br />
phone_number :
<input type="text" formControlName="phone_number" /><br />
<button (click)="removeContact(agreementIndex, contactIndex)">
Remove Contact
</button>
</div>
</div>
在mainForm
和agrementForm
獲取/刪除/添加聯系人的輔助方法
ngOnInit() {
this.initForms();
}
initForms(): void {
this.agrmntsForm = this.getNewAgreementFG(0);
this.mainForm = this.formBuilder.group({
agreements: this.formBuilder.array([]),
});
}
getNewAgreementFG(noOfContacts: number): FormGroup {
const contactArr = Array.from({ length: noOfContacts }, (v, i) => i).map(
(n) => this.createContactsCtrl()
);
return this.formBuilder.group({
sales_price: [null],
closing_cost_support: [null],
financing: [null],
contract_date: [null],
inspection_period: [null],
closing_date: [null],
contacts: this.formBuilder.array(contactArr),
});
}
getContactFGByIndex(groupIndex: number): FormArray {
return (this.agreements().at(groupIndex) as FormGroup).get(
'contacts'
) as FormArray;
}
addContactsMain(groupIndex: number) {
this.getContactFGByIndex(groupIndex).push(this.createContactsCtrl());
}
getContactFG(groupIndex: number): FormGroup[] {
return this.getContactFGByIndex(groupIndex).controls as FormGroup[];
}
removeContact(groupIndex: number, contactIndex: number): void {
this.getContactFGByIndex(groupIndex).removeAt(contactIndex);
}
onSubmit() {
this.isAgsVisible = false;
const agrementFG = this.getNewAgreementFG(
this.agrmntsForm.getRawValue().contacts.length
);
agrementFG.patchValue(this.agrmntsForm.getRawValue());
this.agreements().push(agrementFG);
}
deleteAgrContact(contactIndex) {
this.contactsArr().removeAt(contactIndex);
}
public agreements(): FormArray {
return this.mainForm.get('agreements') as FormArray;
}
希望這已經解決了你所有的問題
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