问题
I'm making a forum application with various levels of authorization, one of which is a Monitor. I am doing this by extending my User class, and I plan on fine tuning this with "-ship" classes (e.g. administratorship, authorship, moderatorship, etc.). Apparently the Monitor class is part of ruby mixin. How do I keep my resource name without the collisions?
回答1:
Some possibilities:
- avoid the
require 'monitor.rb'call which is pulling in the standard Monitor instance - do some runtime magic to rename the existing Monitor class.
- monkey with your load path so that
require 'monitor.rb'pulls in an empty implementation of Monitor.
But in all cases you could end up with the situation where a 3rd party library is using Monitor expecting it to be the standard Monitor class. So, I'd advise against any of the above.
I'd say your only two reasonable options are:
A) you could put your class in a namespace:
Module MyApp
class Monitor
#...
end
end
if your app uses some kind of auto-require magic (e.g it's a rails app) then you would put your implementation in /my_app/monitor.rb. When you wanted to refer to that class you would do something like my_monitor = MyApp::Monitor.new(), or whatever.
B) you could use a different class name :)
回答2:
Declare your Monitor class in other module.
module MyModule
class Monitor
end
end
回答3:
FYI, I just found a neat trick (errr, hack) to get around this which may work.
I work on a large legacy application which, unfortunately, has a "Fixture" model which is quite important and which is used everywhere. When running tests, it's impossible to create a Fixture instance because of the Fixture class used by ActiveRecord when running tests. So I did the following:
FixtureModel = Fixture.dup
This freezes my class in place so that I can refer to it later (but just in my tests!) without being extended by the ActiveRecord Fixture class (which is not namespaced)
来源：https://stackoverflow.com/questions/2694333/ruby-is-already-using-the-class-name-of-my-model