angular2 rc.5自定义输入，没有用于未指定名称的表单控件的值访问器

Angular 2 RC.5 自定义输入值访问器

typescript
import { Component, forwardRef } from '@angular/core';
import { NG_VALUE_ACCESSOR, ControlValueAccessor } from '@angular/forms';
const CUSTOM_INPUT_CONTROL_VALUE_ACCESSOR: any = {
  provide: NG_VALUE_ACCESSOR,
  useExisting: forwardRef(() => CustomInputComponent),
  multi: true
};
@Component({
  selector: 'app-custom-input',
  template: `
    
  `,
  providers: [CUSTOM_INPUT_CONTROL_VALUE_ACCESSOR]
})
export class CustomInputComponent implements ControlValueAccessor {
  value: string = '';
  onInputChange() {
    // 在输入变化时更新值
    this.onChange(this.value);
  }
  // 以下是值访问器的实现
  writeValue(value: any): void {
    this.value = value;
  }
  onChange = (_: any) => {};
  onTouched = () => {};
  registerOnChange(fn: any): void {
    this.onChange = fn;
  }
  registerOnTouched(fn: any): void {
    this.onTouched = fn;
  }
}