.form-group.form-group-lg class=("has-error" if keys.include?("SchuelerErzieher.dat[Anrede #{i}.Person]"))
  label.control-label for="SchuelerErzieher.dat[Anrede #{i}.Person]"
    |Anrede #{i}. Person
  input.form-control name="SchuelerErzieher.dat[Anrede #{i}.Person]" type='hidden' value=""
  label.radio-inline
    input.form-control name="SchuelerErzieher.dat[Anrede #{i}.Person]" type="radio" value="Herr"
      |Herr
  label.radio-inline
    input.form-control name="SchuelerErzieher.dat[Anrede #{i}.Person]" type="radio" value="Frau"
      |Frau