fields do
<% for attribute in field_attributes -%>
    <%= "%-#{max_attribute_length}s" % attribute.name %> :<%= attribute.type %><%=
      case attribute.type.to_s
      when 'string'
        ', limit: 255'
      else
        ''
      end
    %>
<% end -%>
<% if options[:timestamps] -%>
    timestamps
<% end -%>
  end

<% for bt in bts -%>
  belongs_to :<%= bt %>
<% end -%>
<%= "\n" unless bts.empty? -%>
<% for hm in hms -%>
  has_many :<%= hm %>, dependent: :destroy
<% end -%>
<%= "\n" unless hms.empty? -%>