Question

I have two angular components a parent and a child, both with their own form fields. I setup change listeners in both components to listen to the form control value changes and disable some fields upon typing in some form controls.

在试图使构成部分2内的表格控制从构成部分1的变听器中分离出来时,形式控制不是残疾的,而是在打字第二大字之后丧失能力。

在进行了一些研究之后,我发现,在我的变革听众订阅中使用独一无二的“UntilChanged()”是原因。但是,从订阅中删除独一无二的“UntilChanged()”这一主要问题,现在造成以下ole误: ERORR: rangeError: Maximum calls纳克/立方米以上。


changeListener(){
        this.myForm.get( sample_control_name ).valueChanges.subscribe(v => { 
            if(isNotEmpty(v)) {
                this.childComponent.getFormGroup().get( sample_control_name_1 ).disable();
            } 
            else {
                this.childComponent.getFormGroup().get( sample_control_name_1 ).enable();
            }
        })
}

Answer 1

It seems you ve essentially created a loop. The valueChanges observable will emit when you call enable or disable. Here is the relevant section from the Angular Docs:

您可尝试在您的劝说中添加<条码>---emitEvent:不实><>/条码”,并应加以确定。

友情链接