Question

I have a User model with an id, name and url attribute and an associated Preferences model with an id and show_my_url fields.

I want to render my user as json but only include the url attribute if user.preferences.show_my_url is ‘true’.

How can i remove the users url attribute based on the preferences so that it´s not included in the to_json rendering.

Answer 1

def to_json(opts={})
  except = [] # Standard except, may contain some stuff you want to exclude
  except << :url unless self.preferences.show_my_url
  super(opts.merge(:except => except))
end