Custom Error validation


#1

I have a couple of concerns here. Should I only use model methods to
return objects and then save those objects in the controller? or is it
okay to save within a model method like below? The other thing is I
have created a javascript variable to flag if a time gets selected
from a custom javascript pull down menu and I would like to be able to
check that a time is selected and then display the error using rjs.
Below is what I have so far, it does not totally work, but I wanted to
get some input before I went any further.

def create
case params[:event][:kind]
when “appointment”
event = Appointment.create_and_save(blah)
when “personal”
event = Personal.create_and_save(blah)
end
end

class Appointment < Event
def self.create_and_save(blah)
if time_selected == ‘false’
appointment = Appointment.new
appointment.errors.add(‘start_int’, “You must select a time.”)
else
event_info = { blah }
appointment = Appointment.new(event_info)
end
end
end

#now back in the controller i would like to use rjs to render this
error
#something like:
respond_to do |format|
if event.save!

else
format.js do
render :update do |page|
page.replace_html ‘error’, @user.return_validation_error
(‘start_int’) if @user.errors[‘start_int’]
#page << “$(‘email_help’).className = ‘signup_error’;” if
@user.errors[‘email’]
end
end
end
end