private fun isNameValid() : String {
    val name = nameEditText.text
    if (!name.isNameValid()) {
        nameEditText.setError(AppResources.getString(R.string.error))
        nameEditText.requestFocus()
        return ""
    } else {
        nameEditText.setValid()
        return name
    }
}

fun String.isNameValid(): Boolean = !this.isBlank() && this.length > 1 && matches("""p{L}+""".toRegex())