Problem redefining module method

Rails
1

I’m having a problem redefining a method in one of my modules. Lets
say I have this module in /lib:

module Hello
def say_hello
“hello”
end
end

And one of my ActiveRecord models mixes it in like:

class Item < ActiveRecord::Base
include Hello
end

This works fine, I can call @item.say_hello just fine. But when I try
to redefine the method:

class Item < ActiveRecord::Base
include Hello
def say_hello
“Hola!”
end
end

It only works on the first page load after restarting the server.
Every page load after that says method say_hello is undefined. I
suspect that means it has something to do with caching? But I don’t
know enough about the internals to figure it out…

Thanks,
Justin

2

I got a bit farther with this. I’ve been having this problem in
development mode. On a whim I switched to production and it works just
fine. So I suspect it has something to do with model reloading? Is
there any way I can get around this problem in development mode?

Thanks,
Justin

3

I fixed the problem by adding:

model :hello

To any controller where that module will be used.