如何使用updateValueAndValidity重新验证带有数组的表单验证器

Question

＆＃34; updateValueAndValidity＆＃34;似乎没有工作和重置验证器。我正在通过以下方式收听表单值更改：

this.myFormFixtures.valueChanges
                    .subscribe(formData => this.checkFixturesFormValidity(formData));

但以下功能并未设置新验证：

checkFixturesFormValidity(formData)
    {
        console.log(formData);

        const control = <FormArray>this.myFormFixtures.controls['fixtures'];

        for (let i = 0; i < control.length; i++) {

            const participantsControl = (<FormArray>this.myFormFixtures.controls['fixtures']).at(i).get('participants') as FormArray;



                if ((((<any>this.myFormFixtures.controls['fixtures']).at(i).controls['participants'].at(0).get('id').value) != null) || (((<any>this.myFormFixtures.controls['fixtures']).at(i).controls['participants'].at(1).get('id').value) != null))
                {
                    (<any>this.myFormFixtures.controls['fixtures']).at(i).controls['participants'].at(0).get('id').setValidators([Validators.required]);
                    (<any>this.myFormFixtures.controls['fixtures']).at(i).controls['participants'].at(1).get('id').setValidators([Validators.required]);


                }
                else
                {

                }


        }

        this.myFormFixtures.updateValueAndValidity();




    }

有什么想法吗？

Answer 1

也许您可以尝试在setTimeOut中调用它，就像这样：

setTimeout(() => {
    this.myFormFixtures.updateValueAndValidity();
});