profiles controller snippet.rb

gistfile1.rb

def index  
     if params[:interest]
       @profiles = Profile.tagged_with(params[:interest], :on => :interests)
     else
       @profiles = Profile.all
     end

     if params[:skill]
       @profiles = Profile.tagged_with(params[:skill], :on => :skills)
     else
       @profiles = Profile.all
     end
   end

I think you are overwriting the @Profile when you pass only an :interest param. I'm assuming that only one of the :skill or :interest parameters will be sent at once, so the code should be:

def index
 if params[:interest]
  @profiles = Profile.tagged_with(params[:interest], :on => :interests)
 elsif params[:skill]
  @profiles = Profile.tagged_with(params[:skill], :on => :skills)
 else
  @profiles = Profile.all
 end
end

Thanks for helping with the code, @ballman. The earlier error is gone (scoping in tag cloud works); However, now when I click on "edit", the :interest and :skill tags do not show up. I can make a new profile, see :interests and :skills just fine on the Show page, but when I click to Edit the same profile, those :interests and :skills are not visible. I was't getting this error before.