fields.component.ts

fields: FormlyFieldConfig[] = [
    {
      key: 'postal',
      type: 'input',
      parsers: [(value: string) => value?.toUpperCase()],
      templateOptions: {
        label: 'Postal code',
        type: 'text',
        appearance: 'outline',
      },
      expressionProperties: {
        'model.postal': 'model.postal',
      },
      modelOptions: {
        updateOn: 'blur',
      },
    },
    {
      key: 'initials',
      type: 'input',
      parsers: [(value: string) => this.formatInitials(value)],
      templateOptions: {
        label: 'Initials',
        type: 'text',
        appearance: 'outline',
      },
      expressionProperties: {
        'model.initials': 'model.initials',
      },
      modelOptions: {
        updateOn: 'blur',
      },
    },
  ];