Rails - Feb 2012 - Conditional Logic on link_to with a block.

I''ve got some ugly code I don''t know how to improve on. 
I''ve got a
link_to tag that takes a fair amount of html as a block.  I need the
href value for the link to be different depending on some logic, there
are four possible values for the href.

What I ended us with was this, and it''s pretty unreadable.  Any
suggestions on how to do this better?

                      <%= link_to (@brand.nil? ? (@store.nil? ?
(from_catalog_path(params[:id].blank? ? Category.root.id :
params[:id], product.id, product.name_url)) :
(from_store_path(@store.id, product.id))) :
(from_brand_path(@brand.id, product.id))) do -%>
                            ...... HTML IN HERE .....
                      <% end %>

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

Maybe just put the logic in the controller?

if @brand.nil?
  if @store.nil?
    @brand_link_path = from_catalog_path(params[:id].blank? ? 
Category.root.id : params[:id], product.id, product.name_url)
  else
    @brand_link_path = from_store_path(@store.id, product.id)
  end
else
  @brand_link_path = from_brand_path(@brand.id, product.id)
end

Then it simplifies your view:

<%= link_to(@brand_linnk_path) do -%> HTML HERE <% end %>

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To view this discussion on the web visit
https://groups.google.com/d/msg/rubyonrails-talk/-/dzgOPAlRz7EJ.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.