<%= form.text_field :hoc_paper_number, label_text: 'House of Commons paper number' %>
<%= form.label :parliamentary_session %>
<%= form.select :parliamentary_session, Attachment.parliamentary_sessions %>

<%= form.text_field :hoc_paper_number, label_text: 'House of Commons paper number' %>
<%= form.label :parliamentary_session %>
<%= form.select :parliamentary_session, Attachment.parliamentary_sessions, include_blank: true %>

Allow parliamentary session to be unset
Allow parliamentary session to be unset
