search for: ar_instance

That probably isn''t the right title for this topic, but I''m not sure how else to explain in succintly. I''m sorry if this is obvious but I couldn''t find the answer in the Ruby/Rails docs. How do I use a variable as a substitute for a method/field, so that I can call the object with the variable that contains the method name. For example, say I have the

...he object with the variable that contains the method name. Generally it''s done by obj.send(var) Method calls are just messages send to objects, so you can use the #send method to do that. In ActiveRecords''s case, there''s a special convenience method that should work: ar_instance[var] > > For example, say I have the object Product, that has methods Price, > Last_Price, Average_Price. > > I want to be able to return the value of either of those three fields > based on the user selection. Ie, user selection is stored in > params[:foo], which I assign to...

I''ve been working with rails for a while now. Rails is the second web framework I''ve tried. It blows the doors off catalyst (perl''s best framework). I even just wrote my first plugin (broomstick). Ruby''s ability to meta-program blew me away with it''s ease of use. I''ve been so impressed with the helpers that rails uses to make a lot of