Ruby on Rails

I trying to create the conditions of my search, but I have some troubles.

This is the method I'm trying to create in my model.

def self.searchadv(title, place, category, date)      !title.blank? ? conditions = ['title LIKE ?', "%#{title}%"] : conditions = []      if conditions          !place.blank? ? conditions << [' AND place LIKE ?', "%#{place}%"] :  conditions << []          !place.blank? ? conditions << [' AND category LIKE ?', "%#{place}%"] :  conditions << []          !place.blank? ? conditions << [' AND date LIKE ?', "%#{place}%"] :  conditions << []      else           !place.blank? ? conditions << [' place LIKE ?', "%#{place}%"] :  conditions << []          !place.blank? ? conditions << [' category LIKE ?', "%#{place}%"] :  conditions << []          !place.blank? ? conditions << [' date LIKE ?', "%#{place}%"] :  conditions << []      end      find(:all, :conditions => conditions)  end

I get this error

wrong number of bind variables (4 for 1) in: title LIKE ?

if I delete this:

if conditions      !place.blank? ? conditions << [' AND place LIKE ?', "%#{place}%"] :  conditions << []      !place.blank? ? conditions << [' AND category LIKE ?', "%#{place}%"] :  conditions << []      !place.blank? ? conditions << [' AND date LIKE ?', "%#{place}%"] :  conditions << []  else       !place.blank? ? conditions << [' place LIKE ?', "%#{place}%"] :  conditions << []      !place.blank? ? conditions << [' category LIKE ?', "%#{place}%"] :  conditions << []      !place.blank? ? conditions << [' date LIKE ?', "%#{place}%"] :  conditions << []  end

Everything works great, but I need this other options in order to create my search and I don't undertand why the error is in the "LiKE"

Does anyone could help me please?

Thanks in advance!