I'm trying to get the old value in the before_save by adding "_was" to my value but it doesn't seem to work. Here is my code: before_save :get_old_title def get_old_title puts "old value #{self...

I'm trying to compare a new object with the original using CloudCode beforeSave function. I need to compare a field sent in the update with the existing value. The problem is that I can't fetch the...

I have a before_save in my Message model defined like this: class Message < ActiveRecord::Base before_save lambda { foo(publisher); bar } end When I do: my_message.update_attributes(:cre...

I am raising a Yii event on beforeSave of the model, which should only be fired if a specific property of the model is changed. The only way I can think of how to do this at the moment is by creat...

I have two different calculations to make on my model for two different fields. Before saving. Class Event < ActiveRecord::Base #some relations before_save :method1, unless: :some_field_1? b...

I'm trying to strip the whitespaces of the variable Username in my User Model. I'm using before_save do self.username.strip! end but it doesn't seem to work, am i missing something ?

As you know, before_save callbacks are executed prior to before_create callbacks. Therefore, some people have suggested that in would be better to use before_save :method, :on => :create instea...

Whats wrong with this before_save-callback? class Order < ActiveRecord::Base has_many :line_items, :dependent => :destroy, :inverse_of => :order accepts_nested_attributes_for :line_ite...

I want to check if a model is being created in the before_save callback of Rails. I also want to check if it has been modified (when updating). Thanks