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CanCan -- HowTo cache the ability.rb file
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class Ability | |
include CanCan::Ability | |
def marshal_dump | |
#blocks cannot be cached | |
@rules.reject{|rule| rule.instance_variable_get :@block }.map{|rule| Marshal.dump(rule) } | |
end | |
def marshal_load array | |
#blocks cannot be cached, so blocks must be re-defined | |
can :read, Comment do |comment| | |
comment.length > 100 | |
end | |
@rules += array.map{|rule| Marshal.load(rule) } | |
end | |
end |
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class ApplicationController < ActionController::Base | |
if !Rails.env.development? | |
def current_ability | |
cached_ability = Rails.cache.read("#{current_user.cache_key}::ability") | |
if cached_ability.present? | |
ability = Marshal.load( cached_ability ) | |
ability.user = current_user | |
else | |
ability = super | |
Rails.cache.write("#{current_user.cache_key}::ability", Marshal.dump( ability )) | |
end | |
@current_ability = ability | |
end | |
end | |
end |
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