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module CanCan
module ModelAdapters
class MongoidAdapter < AbstractAdapter
def self.for_class?(model_class)
model_class <= Mongoid::Document
end
def self.override_conditions_hash_matching?(subject, conditions)
conditions.any? { |k,v| !k.kind_of?(Symbol) }
end
def self.matches_conditions_hash?(subject, conditions)
# To avoid hitting the db, retrieve the raw Mongo selector from
# the Mongoid Criteria and use Mongoid::Matchers#matches?
subject.matches?( subject.class.where(conditions).selector )
end
def database_records
if @rules.size == 0
@model_class.where(:_id => {'$exists' => false, '$type' => 7}) # return no records in Mongoid
elsif @rules.size == 1 && @rules[0].conditions.is_a?(Mongoid::Criteria)
@rules[0].conditions
else
@rules.inject(@model_class.all) do |records, rule|
if rule.conditions.empty?
records
elsif rule.base_behavior
records.or(rule.conditions)
else
records.excludes(rule.conditions)
end
end
end
end
end
end
end
# simplest way to add `accessible_by` to all Mongoid Documents
module Mongoid::Document::ClassMethods
include CanCan::ModelAdditions::ClassMethods
end
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