A guide to submitting forms within Stepper components in Angular 4 Material

Struggling to figure out how to submit form data within the Angular Material stepper? I've been referencing the example on the angular material website here, but haven't found a solution through my own research.

<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 successfully completed filling out two forms. However, I am unsure of how to retrieve or submit the form data moving forward.

Your assistance is greatly appreciated! :-)

Answer №1

Add a submit button and ngSubmit to the form when you have forms inside a 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);
  }

See Working Demo Here

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