New row every 3 items [closed]

Answer 1

Besides the aforementioned each_slice, Rails also has an in_groups_of method that you can use like so:

<% @items.in_groups_of(3, false).each do |group| %>
  

    

      <% group.each do |item| %>
        

          <%= item.content %>
        
      <% end %>
    
  
<% end %>

Pretty much the same as each_slice, except the scenario of needing to output blank divs becomes much cleaner like so:

<% @items.in_groups_of(3).each do |group| %>
  

    

      <% group.each do |item| %>
        

          <%= item.content if item %>
        
      <% end %>
    
  
<% end %>

in_groups_of pads missing items in the last group with nil by default, so it will make the last few iterations and the if item check will make sure it doesn't blow up by calling content on nil.

in_groups is another fun one to use for view formatting.