小编bha*_*ppa的帖子

this.CRForm = this.fb.group({
      productTeam: [data.productTeam || '']
});

<mat-form-field  floatPlaceholder="always" >
        <app-mat-custom-form-field #custref formControlName="productTeam" placeholder="P12D" ></app-mat-custom-form-field>
    <!--<app-mat-custom-form-field #custref formControlName="productTeam" placeholder="P12D" ngDefaultControl></app-mat-custom-form-field> -->
      </mat-form-field>
 {{custref.value}} -- gives value eg:[P12DT1H2M] and only if ngDefaultControl
 {{CRForm['controls']['productTeam']['value']}} --not giving any

import {
  Component,
  OnInit,
  OnDestroy,
  Input,
  HostBinding,
  Optional,
  Renderer2,
  Self,
  forwardRef,
  ElementRef
} from '@angular/core';
import {
  MatFormFieldControl
} from '@angular/material';
import {
  ControlValueAccessor,
  FormGroup,
  FormBuilder,
  NgControl,
  NG_VALUE_ACCESSOR
} from …