class Keycard::ReloadableProxy
A proxy for class methods, as for authentication methods on User/Account models. This is useful primarily during development mode, where binding a finder into a Verfication factory can break because of code reloading.
For example, something like this would fail across requests where the User model is saved (in development): `AuthToken.bind(User.public_method(:authenticate_by_auth_token))`.
Instead, you can bind to a class method with a proxy that will catch the error from Rails thrown when using a stale reference, replace the target method, and retry the call transparently.
@example
callable = ReloadableProxy.new(:User, :authenticate_by_auth_token)
Attributes
classname[R]
methodname[R]
target[R]
Public Class Methods
new(classname, methodname)
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# File lib/keycard/reloadable_proxy.rb, line 21 def initialize(classname, methodname) @classname = classname @methodname = methodname lookup end
Public Instance Methods
call(*args)
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Call the proxied class method, looking it up again if the class has been reloaded (as signified byt he ArgumentError Rails raises).
# File lib/keycard/reloadable_proxy.rb, line 29 def call(*args) target.call(*args) rescue ArgumentError lookup target.call(*args) end
lookup()
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# File lib/keycard/reloadable_proxy.rb, line 36 def lookup @target = Object.const_get(classname).method(methodname) end