instance has?

example_class.rb

class Example < ActiveRecord::Base

#...
# would this be cool to have, or am I daft?

def has? *args
  args.any? { |a| send(a.to_sym) }
end

# irc chan said to drop the to_sym but I like having the failsafe
# also thinking about maybe has_any? & has_all? for clarification

#...

end

example_view.html.erb

<% if @instance.has? :city, :state, :zipcode -%>
  <p class="address">
     <%= @instance.city %><% if @instance.has? :city -%>, <% end -%><%= @instance.state %> <%= @instance.zipcode %>
  </p>
<% end -%>