Question

I handle RecordNotFound error in my application_controller.rb as follow:

  rescue_from ActiveRecord::RecordNotFound, :with => :record_not_found

  private 

   def record_not_found
     flash[:error] = "Oops, we cannot find this record"
     redirect_to :back
   end

But I would like to get more information, such as class/table name of which record was not found.
How should I go about it?

Thank you.

Answer 1

Say for example,

begin
@user = User.find(params[:id])
rescue ActiveRecord::RecordNotFound
  flash[:notice] = "#No such record in User for id :: {params[:id]} on #{action_name}"
end

UPDATE

flash[:notice] = t('flash.recordnotfound',:class_name => self.class.name, :column_name => params[:id], :action_name => action_name)

Now in your config/locales/en.yml (this would help translate, refer to i18n here)

flash:
  recordnotfound:  "Sorry, no record od %{column_name} in class %{class_name} was found on you action %{action_name}"

If you do not want to use locales just put up this information in flash[:notice] itself.

More dynamic ?

Write a function and use the same flash [:notice] there. Wont hurt at all.

want more data ?

Heres a quick solution, i always <%= params%> in my views to know easily whats going and whats coming. You can then open your rails console and play along with different actions and so on.

user = User.new
user.save
user.errors.messages

All of this is good enough data, i think.

Good luck.