On Thu, May 5, 2011 at 9:41 AM, S Ahmed <sahmed1...@gmail.com> wrote:
> ah I see, this is what I have experienced. > > But why is that? Shouldn't both getting and setting have similiar > behaviour? > > I think when I was getting a value, using self.attribute wasn't working, is > that the case or was I doing somehting else wrong? > > > when you want to get a value, you can use self or not but it should return the same value unless, as Fred pointed out, you set a local variable with the same name as one of the instance object's attribute where using self.attribute would return the attribute value, and using attribute (which is also the local variable name) would return the variable value. > > > On Wed, May 4, 2011 at 8:31 PM, Jim Ruther Nill <jvn...@gmail.com> wrote: > >> >> >> On Thu, May 5, 2011 at 3:34 AM, S Ahmed <sahmed1...@gmail.com> wrote: >> >>> I'm a little confused when I should be using 'self' in my model. >>> >>> I had code like: >>> >>> class User < ActiveRecord::Base >>> >>> before_save :do_something >>> >>> >>> def do_something >>> >>> self.user_bio_text = .... >>> .. >>> self.user_bio_text >>> end >>> >>> >>> end >>> >>> >>> >>> If I removed 'self', it didn't seem to set the model's attribute at all >>> (it would return nil). >>> >>> >> when assigning values to attributes of an instance object, you need to use >> self, ie self.attribute = something. >> if you're only getting the value of that attribute, no need to add self. >> >> >>> I can't recall exaclty where this happenend in my code, but I remember >>> that I was trying to get the a model's attribute and it didn't work when I >>> used 'self.some_attribute'. >>> >>> >>> So I'm confused, when do I use 'self' and when't don't I? >>> >>> -- >>> 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 rubyonrails-talk@googlegroups.com. >>> To unsubscribe from this group, send email to >>> rubyonrails-talk+unsubscr...@googlegroups.com. >>> For more options, visit this group at >>> http://groups.google.com/group/rubyonrails-talk?hl=en. >>> >> >> >> >> -- >> ------------------------------------------------------------- >> visit my blog at http://jimlabs.heroku.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 rubyonrails-talk@googlegroups.com. >> To unsubscribe from this group, send email to >> rubyonrails-talk+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/rubyonrails-talk?hl=en. >> > > -- > 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 rubyonrails-talk@googlegroups.com. > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > -- ------------------------------------------------------------- visit my blog at http://jimlabs.heroku.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 rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
