Angular Material - Form Field

The <mat-form-field>, an Angular Directive, is used to create a wrapper over angular components and is used to apply text styles like underline, bold, hints etc.

Following angular component can be used within <mat-form-field>.

• <input matNativeControl>

• <textarea matNativeControl>

• <select matNativeControl>

• <mat-select>

• <mat-chip-list>

In this chapter, we will showcase the configuration required to use a mat-form-field control in Angular Material.

Create Angular Application

Follow the following steps to update the Angular application we created in Angular Material - First Application chapter −

app.ts

Following is the content of the modified app.ts.

import { Component, signal } from '@angular/core';
import { MatFormFieldModule } from '@angular/material/form-field';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { MatInputModule } from '@angular/material/input';
import { MatOptionModule } from '@angular/material/core';
import { MatSelectModule } from '@angular/material/select';
import { MatIconModule } from '@angular/material/icon';

@Component({
   selector: 'app-root',
   imports: [
      FormsModule,
      MatFormFieldModule,
      MatInputModule,
      MatOptionModule, 
      MatSelectModule, 
      MatIconModule,
      ReactiveFormsModule,
   ],
   templateUrl: './app.html',
   styleUrl: './app.css'
})
export class App {
   protected readonly title = signal('material-app');
}

app.html

Following is the content of the modified HTML host file app.html.

<div class = "tp-container">
   <mat-form-field appearance = "fill">
      <input matInput placeholder = "Input">
      <mat-icon matSuffix>sentiment_very_satisfied</mat-icon>
      <mat-hint>Sample Hint</mat-hint>
   </mat-form-field>
   <mat-form-field appearance = "fill">
      <textarea matInput placeholder = "Textarea"></textarea>
   </mat-form-field>
   <mat-form-field appearance = "outline">
      <mat-select placeholder = "Select">
         <mat-option value = "A">A</mat-option>
         <mat-option value = "B">B</mat-option>
         <mat-option value = "C">C</mat-option>      
      </mat-select>
   </mat-form-field>
</div>

app.css

Following is the content of the modified CSS file app.css.

.tp-container {
   display: flex;
   flex-direction: column;
}
.tp-container > * {
   width: 100%;
}

Result

Verify the result.

Details

• As first, we've created an form field using mat-form-field wrapper. We've changed the appearance of form field using appearance attribute.

• Then, a form control is added to the form field.