ANGULAR找不到路径为&x27;儿童形式阵列->;[对象]->;性别';
我正在做一个有角度的项目,我试图用反应式的形式动态地增加多个孩子的年龄和性别。虽然正在添加表单,但表单的删除部分不起作用。每次我尝试添加时,都会不断出现错误ANGULAR找不到路径为&x27;儿童形式阵列->;[对象]->;性别';,angular,typescript,reactive-forms,Angular,Typescript,Reactive Forms,我正在做一个有角度的项目,我试图用反应式的形式动态地增加多个孩子的年龄和性别。虽然正在添加表单,但表单的删除部分不起作用。每次我尝试添加时,都会不断出现错误 Cannot find control with name: 'childrenFormArray' 这是我的ts代码 ngOnInit(): void { this.childrenFormGroup= this.formBuilder.group({ childrenFormArray: this.formBuild
Cannot find control with name: 'childrenFormArray'
这是我的ts代码
ngOnInit(): void {
this.childrenFormGroup= this.formBuilder.group({
childrenFormArray: this.formBuilder.array([ this.createItem() ])
});
}
createItem(): FormGroup {
return this.formBuilder.group({
gender: new FormControl(''),
age: new FormControl(''),
});
}
addItem(): void {
if(this.childrenFormGroup.get('childrenFormArray'['controls'].length<this.numberOfChildren) {
this.childrenFormArray = this.childrenFormGroup.get('childrenFormArray') as FormArray;
this.childrenFormArray.push(this.createItem());
this.addItem();
}
else if(this.childrenFormGroup.get('childrenFormArray'['controls']>this.numberOfChildren) {
this.childrenFormArray = this.childrenFormGroup.get('childrenFormArray') as FormArray;
this.childrenFormArray.removeAt(this.childrenFormArray.length-1);
this.addItem()
}
ngOnInit():void{
this.childrenFormGroup=this.formBuilder.group({
childrenFormArray:this.formBuilder.array([this.createItem()]))
});
}
createItem():FormGroup{
返回此.formBuilder.group({
性别:新FormControl(“”),
年龄:新FormControl(“”),
});
}
addItem():void{
if(this.childrenFormGroup.get('childrenFormArray'['controls'].lengthis.numberOfChildren){
this.childrenFormArray=this.childrenFormGroup.get('childrenFormArray')作为FormArray;
this.childrenFormArray.removeAt(this.childrenFormArray.length-1);
这是addItem()
}
}
这是我用来打印表单的html代码
儿童人数
男性
女性
其他
您需要确保html与表单匹配,例如表单具有
childrenFormGroup: FormGroup
childrenFormArray : FormArray
[0] : FormGroup
gender: FormControl
age: FormControl
[1] : FormGroup
gender: FormControl
age: FormControl
现在我们可以回到你的状态,试着在上面见面
儿童人数
男性
女性
其他
请注意这两行
<ng-container formArrayName="childrenFormArray">
...
[formGroupName]='i'
...
[formGroupName]=“我”