handling ActiveRecord::RecordNotFound

rubyonrails-talk
1

How should we handle requests for invalid objects which do not exist in database, ActiveRecord::RecordNotFound error ? I am writing begin-rescue as follows:   def show     begin       @phone = Phone.find(params[:id])     rescue ActiveRecord::RecordNotFound       flash[:notice] = NONEXIST_OBJECT       redirect_to :controller => :phone, :action => :index     else       respond_to do |format|         format.html         format.xml {render :xml => @agenda.to_xml}       end     end    end

Instead of repeating this for show, edit, and delete in every controller, I would like to put this into an application_controller. How do I pass current controller name to the application controller? The controller and model names are matching, so I would generate a class name from controller name, then do a begin-find-rescue stuff.

Also, does this belong to controller? My first thought was to handle this in model, as it is related to ActiveRecord. Any thoughts on this ?

Please help me with putting it into app_con anyway.

2

Instead of repeating this for show, edit, and delete in every controller, I would like to put this into an application_controller.
How do I pass current controller name to the application controller? The controller and model names are matching, so I would generate a class name from controller name, then do a begin-find-rescue stuff.

Also, does this belong to controller? My first thought was to handle this in model, as it is related to ActiveRecord. Any thoughts on
this ?

If the user asks to see object blah and that doesn't exist, then what
to tell the user is definitely controller material. If I were you I'd take a look at rescue_from.

Fred