I'd like to execute some code only during first invocation of controller - sort of a init method. The subsequent invocations do not need to invoke this code.
How do I achieve it ?
Um, what is it you want to do? Each call to a given controller's action is in a brand new controller instance, so any initialize method is useless.
If it's one-time initialization of something, then you want config.after_initialize in your environment.rb
Jason
> How do I achieve it ?
Um, what is it you want to do? Each call to a given controller's action is in a brand new controller instance, so any initialize method is useless.
I'm trying to port some Java EE Servlet code to Rails controller/ action and am trying to find out the best place for Servlet.init() method.
If it's one-time initialization of something, then you want config.after_initialize in your environment.rb
Ah, can you provide some docs/examples of that ?
-Arun
> > How do I achieve it ?
> Um, what is it you want to do? Each call to a given controller's > action is in a brand new controller instance, so any initialize method > is useless.
I'm trying to port some Java EE Servlet code to Rails controller/ action and am trying to find out the best place for Servlet.init() method.
in config/initializers?
Fred
You can use the before_filter class method which will execute code before any action is done in your controller. I'm not sure what you mean by "first invocation of a controller" since as Jason pointed out each call to a controller creates a new instance.
Can you explain more? (For details on the filters look here http://api.rubyonrails.com/classes/ActionController/Filters/ClassMethods.html)
Nicholas
> I'm trying to port some Java EE Servlet code to Rails controller/ > action and am trying to find out the best place for Servlet.init() > method.
in config/initializers?
So what do I define in config/initializers and how do I invoke it ?
-Arun
Ok figured out that all *.rb files are read in config/initializers so that is working. But
greeting = "this is it!"
or
@greeting = "this is it!"
does not allow me to access it in the view.
How do I define my "public static final" constants here ?
-Arun
Quoting Arun <arun.gupta@gmail.com>:
Ok figured out that all *.rb files are read in config/initializers so that is working. But
greeting = "this is it!"
or
@greeting = "this is it!"
does not allow me to access it in the view.
How do I define my "public static final" constants here ?
Is it a class variable or an instance variable? If the former, just add "GREETING = "this is it!" after the class statement and before any def statements. If the latter, you need to describe more how it is used.
HTH, Jeffrey