Common Functions for Models

rubyonrails-talk
1

Hi Everyone,

1) Can anyone tell me where to put the common functions, which is to be used in more than one model & controller? Is there any way to create a "common_functions.rb" model? (Or) is it a good practice to put all the common functions (functions with or without database activities) in Application controller? since Application controller is accessible anywhere.

2) How to access Params & session variable in a model?

Please help me out in these issues.

Regards, VASANTH

2

1) Library that gets put in lib/:

lib/common_functions.rb: module CommonFunctions # or class   ... Your stuff here ... end

In your model:

CommonFunctions.method, or you can include CommonFunctions

2) The controller should send to the model only the information it needs. Models do not know about params / session for a very good reason.

Jason

3

Hi Everyone,

1) Can anyone tell me where to put the common functions, which is to
be used in more than one model & controller? Is there any way to create a "common_functions.rb" model?

You can create modules and include them where appropriate. It may be
appropriate to put some things in application controller - eg all our
controllers require you to be logged in, so the stuff to do with that
is handled at the application controller

(Or) is it a good practice to put all the common functions (functions
with or without database activities) in Application controller? since Application controller is accessible anywhere.

2) How to access Params & session variable in a model?

pass them (or relevant subsets thereof) down as parameters

Fred

4

Thanks a lot for your solutions.

Regards, VASANTH