Module: Authorization::Maintenance::Usage

Defined in:
lib/declarative_authorization/maintenance.rb

Overview

Module for grouping usage-related helper methods

Class Method Summary collapse

Class Method Details

.usages_by_controller ⇒ Object

Delivers a hash of => usage_info_hash, where usage_info_hash has the form of



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# File 'lib/declarative_authorization/maintenance.rb', line 57

def self.usages_by_controller
  # load each application controller
  begin
    Dir.foreach(File.join(RAILS_ROOT, %w{app controllers})) do |entry|
      if entry =~ /^\w+_controller\.rb$/
        require File.join(RAILS_ROOT, %w{app controllers}, entry)
      end
    end
  rescue Errno::ENOENT
  end
  controllers = []
  ObjectSpace.each_object(Class) do |obj|
    controllers << obj if obj.ancestors.include?(ActionController::Base) and
                          !%w{ActionController::Base ApplicationController}.include?(obj.name)
  end

  controllers.inject({}) do |memo, controller|
    catchall_permissions = []
    permission_by_action = {}
    controller.all_filter_access_permissions.each do |controller_permissions|
      catchall_permissions << controller_permissions if controller_permissions.actions.include?(:all)
      controller_permissions.actions.reject {|action| action == :all}.each do |action|
        permission_by_action[action] = controller_permissions
      end
    end

    actions = controller.public_instance_methods(false) - controller.hidden_actions
    memo[controller] = actions.inject({}) do |actions_memo, action|
      action_sym = action.to_sym
      actions_memo[action_sym] =
        if permission_by_action[action_sym]
          {
            :privilege => permission_by_action[action_sym].privilege,
            :context   => permission_by_action[action_sym].context,
            :controller_permissions => [permission_by_action[action_sym]]
          }
        elsif !catchall_permissions.empty?
          {
            :privilege => catchall_permissions[0].privilege,
            :context   => catchall_permissions[0].context,
            :controller_permissions => catchall_permissions
          }
        else
          {}
        end
      actions_memo
    end
    memo
  end
end