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Rails in groups of

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  1. %w(1 2 3 4 5 6 7).in_groups_of(3, '&nbsp;') {|group| p "<tr>" << (group.collect! {|x| "<td>#{x}</td>" }.to_s) << "</tr>" }
  2.  
  3. # returns:
  4. #"<tr><td>1</td><td>2</td><td>3</td></tr>"
  5. #"<tr><td>4</td><td>5</td><td>6</td></tr>"
  6. #"<tr><td>7</td><td>&nbsp;</td><td>&nbsp;</td></tr>"
  7.  
  8. # The better rails way:
  9.  <table>
  10.    <% %w(1 2 3 4 5 6 7).in_groups_of(3, '&nbsp;') do |group| %>
  11.      <%= content_tag(:tr, (group.collect! {|x| content_tag(:td, "#{x} hoo!") } ) )  %>
  12.    <% end %>
  13.  </table>
  14. # returns:
  15. # <table>
  16. #   <tbody>
  17. #     <tr><td>1 hoo!</td><td>2 hoo!</td><td>3 hoo!</td></tr>
  18. #     <tr><td>4 hoo!</td><td>5 hoo!</td><td>6 hoo!</td></tr>
  19. #     <tr><td>7 hoo!</td><td>&nbsp; hoo!</td><td>&nbsp; hoo!</td></tr>
  20. #   </tbody>
  21. # </table>

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