How to submit forms in Stepper in Angular 4 material?

问题

How to submit form data in the stepper of angular material. I am following the example from angular material https://material.angular.io/components/stepper/examples. I did lot of googling before asking this question, but not found any answer.

<mat-horizontal-stepper [linear]="isLinear" #stepper="matHorizontalStepper">
  <mat-step [stepControl]="firstFormGroup">
    <form [formGroup]="firstFormGroup">
      <ng-template matStepLabel>Fill out your name</ng-template>
      <mat-form-field>
        <input matInput placeholder="Last name, First name" formControlName="firstCtrl" required>
      </mat-form-field>
      <div>
        <button mat-button matStepperNext>Next</button>
      </div>
    </form>
  </mat-step>
  <mat-step [stepControl]="secondFormGroup">
    <form [formGroup]="secondFormGroup">
      <ng-template matStepLabel>Fill out your address</ng-template>
      <mat-form-field>
        <input matInput placeholder="Address" formControlName="secondCtrl" required>
      </mat-form-field>
      <div>
        <button mat-button matStepperPrevious>Back</button>
        <button mat-button matStepperNext>Next</button>
      </div>
    </form>
  </mat-step>
  <mat-step>
    <ng-template matStepLabel>Done</ng-template>
    You are now done.
    <div>
      <button mat-button matStepperPrevious>Back</button>
      <button mat-button (click)="stepper.reset()">Reset</button>
    </div>
  </mat-step>
</mat-horizontal-stepper>

I am done with filling two forms. But after that I am not getting how to get / submit the form data.

Thank you for you help... :-)

回答1:

Give submit button and ngSubmit to form where you have forms inside Stepper

      <button mat-raised-button (click)="isLinear = true" id="toggle-linear">Enable linear mode</button>

<mat-horizontal-stepper [linear]="isLinear" #stepper="matHorizontalStepper">
  <mat-step [stepControl]="firstFormGroup">
    <form [formGroup]="firstFormGroup" (ngSubmit)="form1()" #formone="ngForm">
      <ng-template matStepLabel>Fill out your name</ng-template>
      <mat-form-field>
        <input matInput placeholder="Last name, First name" formControlName="firstCtrl" required>
      </mat-form-field>
      <div>
        <button type="button" mat-button matStepperNext>Next</button>
        <button type="submit" mat-button>submit</button>
      </div>
    </form>
  </mat-step>
  <mat-step [stepControl]="secondFormGroup">
    <form [formGroup]="secondFormGroup" (ngSubmit)="form2()" #formtwo="ngForm">
      <ng-template matStepLabel>Fill out your address</ng-template>
      <mat-form-field>
        <input matInput placeholder="Address" formControlName="secondCtrl" required>
      </mat-form-field>
      <div>
        <button type="button" mat-button matStepperPrevious>Back</button>
        <button type="button" mat-button matStepperNext>Next</button>
         <button type="submit" mat-button>submit</button>
      </div>
    </form>
  </mat-step>
  <mat-step>
    <ng-template matStepLabel>Done</ng-template>
    You are now done.
    <div>
      <button mat-button matStepperPrevious>Back</button>
      <button mat-button type="button" (click)="stepper.reset()">Reset</button>
      <button mat-button type="button" (click)="formone.ngSubmit.emit();formtwo.ngSubmit.emit()">
        submit
        </button>
    </div>
  </mat-step>
</mat-horizontal-stepper>

Component

form1(){
    console.log(this.firstFormGroup.value);
  }

  form2(){
    console.log(this.secondFormGroup.value);
  }

Working Demo

来源：https://stackoverflow.com/questions/50133336/how-to-submit-forms-in-stepper-in-angular-4-material