If you are using Angular Material and you see the error “mat-form-field must contain a MatFormFieldControl”, it means that the mat-form-field
component is missing a form control element such as input
, textarea
, or a select
element.
To fix this error, you need to make sure that you are using a form control element inside the mat-form-field
component. Here is an example of how you can do this:
<mat-form-field>
<input matInput [(ngModel)]="name" type="text">
</mat-form-field>
In this example, the mat-form-field
component contains an input
element with the matInput
directive. This directive tells Angular Material that the input
element is a form control element and should be styled as a material design input field.
You can also use other form control elements such as textarea
or select
inside the mat-form-field
component, like this:
<mat-form-field>
<textarea matInput [(ngModel)]="description"></textarea>
</mat-form-field>
<mat-form-field>
<mat-select [(ngModel)]="selectedOption">
<mat-option *ngFor="let option of options" [value]="option">{{option}}</mat-option>
</mat-select>
</mat-form-field>
In these examples, the mat-form-field
component contains a textarea
element and a select
element, respectively. Both of these elements use the matInput
directive to tell Angular Material that they are form control elements.
If you are using a custom form control element inside the mat-form-field
component, you can use the MatFormFieldControl
directive to specify that the element is a form control element. Here is an example of how you can do this:
<mat-form-field>
<my-custom-form-control matInput [(ngModel)]="customValue" [formControl]="customControl"></my-custom-form-control>
</mat-form-field>
In this example, the my-custom-form-control
element is a custom form control element that is being used inside the mat-form-field
component. The MatFormFieldControl
directive is applied to the my-custom-form-control
element to specify that it is a form control element.
By following these steps, you can fix the error “mat-form-field must contain a MatFormFieldControl” in Angular.

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