I'm sure you know that I'm a big fan of presenters, maintaining one of the most popular gems that implements them, but they've generally been deemed a bit too heavy of a pattern in the past. What do you mean by 'arbitrarily set them'?
There were performance tests, but nobody used them, so we pulled them out to a gem in 4.0.
Can you give me an example of the eval problem? Not familliar with it.
For point one, I mean that developers have free range with helper definitions and that they eventually find their way into controllers.
Interesting news about performance tests in <4. I didn't realize that, I'll check them out.
The eval problem is as follows (typically if you have to eval something in a gem):
class Foo < ActiveRecord::Base
before_save :bar
..
end
Foo.class_eval do
# I want to remove before_save callback here without having to redefine it.
before_save :bar
...
def bar
return
end
end