相关疑难解决方法(0)

我想将父组件的FormGroup传递给它的子组件,以便使用子组件显示错误消息

鉴于以下父母

parent.cmponent.ts

import { Component, OnInit } from '@angular/core'
import {
    REACTIVE_FORM_DIRECTIVES, AbstractControl, FormBuilder, FormControl,
    FormGroup, Validators
} from '@angular/forms'

@Component(
    {
      moduleId: module.id,
      selector: 'parent-cmp',
      templateUrl: 'language.component.html',
      styleUrls: ['language.component.css'],
      directives: [
        ErrorMessagesComponent]
    })
export class ParentCmp implements OnInit {
  form: FormGroup;
  first: AbstractControl;
  second: AbstractControl;

  constructor(private _fb: FormBuilder) {
    this.first =
        new FormControl('');
    this.second = new FormControl('')
  }

  ngOnInit() {
    this.form = this._fb.group(
        {
          'first': this.first,
          'second': this.second
        });
}
}

我现在想将表单:FormGroup变量传递给下面的子组件

错误message.component.ts

import { Component, OnInit, Input …