if params[:title]
      @posts = Post.where("UPPER(posts.title) LIKE UPPER(%?%)", parmas[:title]).paginate(:page => 1, :order => "created_at DESC", :per_page => 20)
    else
      @posts = Post.paginate(:page => 1, :orde r= "created_at DESC", :per_page => 20)
    end