I have created a function in model that retrieves the idea of creating it uisng this link: http://stackoverflow.com/questions/1330273/how-to-calculate-difference-of-two-fields-on-form-submit-ruby-on-rails
The aim of the function is to calculate the following formula, provided that all are fields in the table: quantity_sold = receive + deliver This is how my model looks like: Class Iteminfo < ActiveRecord::Base attr_accessor :receive, :deliver before_create :calculate_quantity_sold private def calculate_quantity_sold self.quantity_sold = receive.to_i + deliver.to_i end end Now, when I enter values for the "deliver" and "receive" fields, say: receive = 10 deliver = 10 I get the following value for "quantity_sold" ---> 20 Where is the problem? The problem is that when I enter the values on the form for the "receive" and "deliver" fields, and then hit the "Create" buttom, in the "show" page, I get a "20" beside the "quantity_sold" field shown and EMPTY fields for "deliver" and "receive". The other problem is that when I for example want to see the data in my table using Firefoxe's SQLite Manager I do NOT get any data shown although I can see it in the form "index" page. What is the problem here? Thanks. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
