Example of Form Feilds

@Component({
  template: `
    <rml-form #appFrom (submitForm)="onSubmit($event)" class="container" [query="query$">

      <!--  Standard form input types -->
      <rml-field type="text" key="id" disabled="true"></rml-field>
      <rml-field type="textarea" key="notes" label="Notes" required></rml-field>

      <!--  Create Custom field template -->
      <app-custom-field type="select" key="firstName" ></app-custom-field>

      <!--  Group validation -->
      <rml-field-group key="pax" [validator]="paxValidator">
        <rml-field type="email" key="emailAddress" required></rml-field>
        <rml-field type="email" key="emailAddressConfirm" required></rml-field>
      </rml-field-group>

      <!--  Show/Hide visiblity of fields -->
      <rml-field type="select" key="brave" [options]="braveOptions" required  [visible]="showBrave" ></rml-field>
      <rml-field type="checkbox" key="showBrave" (valueChanges)="showBraveChange($event)" ></rml-field>

      <div class="alert alert-danger" *ngIf="appFrom.error">{{appFrom.error}} </div>

      <div class="form-row">
        <button type="submit" class="btn btn-primary {{appFrom.valid  ? '': 'is-invalid'}}"
          (click)="appFrom.submit()">Save</button>
      </div>

    </rml-form>
  `,
})
export class StudentComponent implements OnInit {

  query$: Observable<any>;
  paxValidator: ValidatorOption;
  showBrave = true;
  braveOptions = [];

  constructor() {

    // this.query$ = this.qx.call(queryStr).pipe(
    //   map((result) => result?.data?.students[0]));
    this.braveOptions = [
      { key: 'solid', value: 'Solid' },
      { key: 'great', value: 'Great' },
      { key: 'good', value: 'Good' },
      { key: 'unproven', value: 'Unproven' }];

  }

  ngOnInit(): void {

    this.paxValidator = {
      key: 'emailCompare',
      validator: (c: FormGroup): ValidationErrors | null => {
        const e1 = c.get('emailAddress').value || '';
        const e2 = c.get('emailAddressConfirm').value || '';
        if (e1 === '' || e2 === '') { return null; }
        if (e1 !== e2) { return { error: true }; }
        return null;
      },
      error: ' Emails to not match.'
    };

  } 


  onSubmit(value) {
    // if (this.validate()) {
    //   this.payLoad = JSON.stringify(this.form.getRawValue());
    // }
  }

  showBraveChange(value) {
    this.showBrave = !this.showBrave;
  }

}

Example of Custom Field Component

@Component({
  selector: 'app-custom-field',
  template: `
  <div class="{{groupClass}}" [formGroup]="form" *ngIf="visible">
    <label [ngClass]="{'required': required }" [attr.for]="guid">{{label}}</label>

    <!-- you could put in a switchcase for multiple field types here -->
    <input class="{{inputClass}}" [formControlName]="key"
      [ngClass]="{'is-invalid': error }" [attr.readOnly]="readonly?'':null" [attr.disabled]="disabled?'':null"
      (blur)="blur()" [id]="guid" type="text" placeholder="{{placeHolder || label}}">

    <span class="invalid-feedback {{error ? 'd-block': '' }}">{{error}}</span>
  </div>
  `
})
export class MyFieldComponent extends FieldComponent {

  constructor(
    @SkipSelf() formComponent: FormComponent,
    @Optional() @SkipSelf() fieldGroupComponent: FieldGroupComponent) {
    super(formComponent, fieldGroupComponent);
  }

}

Using Custom component

<rml-form #appFrom (submitForm)="onSubmit($event)" class="container" [query]="query$">

  <!-- Using custom component -->
  <app-custom-field type="text" key="firstName"  ></app-custom-field>

</rml-form>