angular - FormArray multiple get datain onSubmitForm ionic
问题描述
I have created form with formBuilder
this.authForm = this.formBuilder.group({
diagnostic: ['', Validators.required],
produit:['',Validators.required],
pieces: this.formBuilder.array([]),
ramassage:'',
main:''
});
get getPiecesArray() {
return this.authForm.get('pieces') as FormArray;
}
addPiece() {
const piece = this.formBuilder.group({
piece: [],
prix: [],
})
this.getPiecesArray.push(piece);
}
deletePiece(i) {
this.getPiecesArray.removeAt(i)
}
in my html i have
<div formArrayName="pieces">
<ion-item *ngFor="let piece of getPiecesArray.controls; let i=index" [formGroupName]="i">
<ion-icon item-end color="danger" name="trash" (click)="deletePiece(i)"></ion-icon>
<ion-item>
<ion-input full placeholder="Piéce" formControlName="piece"></ion-input>
</ion-item>
<ion-item>
<ion-input placeholder="Prix" formControlName="prix"></ion-input>
</ion-item>
</ion-item>
</div>
But when i want to get from onSubmitForm()
console.log(this.getPiecesArray().controls);
for (let control of this.getPiecesArray().controls) {
pieces = pieces + " " + control.value;
}
I have this error Cannot invoke an expression whose type lacks a call signature. Type 'FormArray' has no compatible call signatures.
How i can get all data put in formBuilder.array
解决方案
getPiecesArray
array 是一个get
ter 而不是一个方法。所以应该这样调用:
console.log(this.getPiecesArray.controls);
for (let control of this.getPiecesArray.controls) {
pieces = pieces + " " + control.value;
}
但是如果你想获得所有控件的值,你可以简单地做,this.authForm.value
. 如果你只想要件的价值,你可以做this.authForm.value.pieces
尝试这个:
authForm: FormGroup;
constructor(
public navCtrl: NavController,
private formBuilder: FormBuilder
) {
this.authForm = this.formBuilder.group({
diagnostic: ['', Validators.required],
produit: ['', Validators.required],
pieces: this.formBuilder.array([]),
ramassage: '',
main: ''
});
}
addPiece() {
const piece = this.formBuilder.group({
piece: [],
prix: [],
});
this.getPiecesArray.push(piece);
console.log('After Add: ', this.authForm.value);
}
onSubmitForm() {
console.log(this.authForm.value);
}
deletePiece(i) {
this.getPiecesArray.removeAt(i);
}
get getPiecesArray() {
return ( < FormArray > this.authForm.get('pieces'));
}
在模板中:
<ion-header>
<ion-navbar>
<ion-title>Home</ion-title>
</ion-navbar>
</ion-header>
<ion-content padding>
<form [formGroup]="authForm" (submit)="onSubmitForm()">
<button type="button" (click)="addPiece()">Add Piece</button>
<div formArrayName="pieces">
<ion-item
*ngFor="let piece of getPiecesArray.controls; let i=index"
[formGroupName]="i">
<ion-icon
item-end
color="danger"
name="trash"
(click)="deletePiece(i)">
</ion-icon>
<ion-item>
<ion-input
full
placeholder="Piéce"
formControlName="piece">
</ion-input>
</ion-item>
<ion-item>
<ion-input placeholder="Prix" formControlName="prix"></ion-input>
</ion-item>
</ion-item>
</div>
<button>Submit</button>
</form>
</ion-content>
这是您参考的示例 StackBlitz。
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