@if(!registerData.name) {

} @else { }

@if (!name.valid && name.touched) {

You must enter a name.

}

@if(!registerData.mail) {

} @else { }

@if (!mail.valid && mail.touched) {

You must enter a mail.

}

@if(!registerData.password) {

} @else { }

@if (!password.valid && password.touched) {

You must enter a password.

}

@if(!registerData.passwordConfirm) {

} @else { }

@if (!passwordConfirm.valid && passwordConfirm.touched) {

You must enter a password.

}