How to pull specific flash messages for display in different parts of the page instead of grouping all flashes together in one place.

gistfile1.rb

<%- # Show all flash messages in one place -%>
<% if flash.present? %>
  <div id="myModal" class="reveal-modal">
    <%- flash.each do |key, value| -%>
      <div class="<%= key %>_flash"><%= raw value %></div>
    <%- end -%>
    <a class="close-reveal-modal">&#215;</a>
  </div>
<% end %>

<%- # Show only success flash messages in this location -%>
<% if flash.present? && flash.has_key?(:success) %>
  <div class="success_flash"><%= raw flash[:success] %></div>
<% end %>

The Rails “flash” is just a Hash object set into a variable called ‘flash’. The .each iterates through each element of the Hash pulling out both the key (:success, :error, :notice, etc) and the value (line 3).
But instead of iterating, you can check for any specific key and then pull the value for it.