Question

Working in an app where a page_title method was defined in application_helper.rb as such:

  def page_title(title = nil)
    if title.present?
      content_for(:page_title) { "#{title} - SomeDomain.tld" }
    else
      content_for?(:page_title) ? content_for(:page_title) : "SomeDomain.tld"
    end
  end

In a view I need to pass this page_title on into some various links, example:

= link_to "http://www.some_bookmark_site.com/submit?url=#{URI::escape(request.url)}&title=#{URI::escape(page_title)}", :target =>"_blank"  do

However when I do this I am getting a nil error "undefined method 'each_byte' for nil:NilClass" which indicates obviously the method’s returning a nil…

or is it that I need to pass a var in here instead? Would appreciate clarification on how to form this all properly for such conditions.

Full trace: http://pastebin.com/gegDETUp

Just wanted to note that I’m still looking for an answer on this question.

Answer 1

when i understand your question correctly, you are asking why your page_title method returns nil?

if that’s the case, you should have a look at how to use content_for and yield within templates:

# in the helper
content_for(:page_title, 'title') # => nil

# in the view
yield :page_title # => here goes the 'title'

http://guides.rubyonrails.org/layouts_and_rendering.html#understanding-yield