ruby on rails - Treating the file store as a column in the table -

i have blog model of content stored in file , remaining things stored in table.

my solution below

i created virtual attribute getter/setter method.

def content     file.read(file_path) end  def content=(html)     file.open(file_path, "w") |file|         file.write(html)     end end 

but here have problem, want store html content file if record valid, when below in controller

blog.new(:content => html,:title => "title".......) 

my setter called first before other attributes set. since other attributes validated presence true record fail save still file stored.

so want solution file created if record valid , stored.

i think might better use before_save , after_find callbacks here. add accessors class allow attributes stored in memory when creating/updating content. when save database, save content file. when loading records database, load content file , store using same accessor

class post   attr_accessor :content   before_save :save_to_disk   after_find :load_from_disk    def save_to_disk     file.open(file_path, "w"){ |f| f.write(content) }   end    def load_from_disk     file.open(file_path){ |f| self.content = f.read }   end  end