Class: CanCan::ModelAdapters::MongoidAdapter

Inherits:
AbstractAdapter show all
Defined in:
lib/cancan/model_adapters/mongoid_adapter.rb

Class Method Summary (collapse)

Instance Method Summary (collapse)

Methods inherited from AbstractAdapter

adapter_class, find, inherited, #initialize, matches_condition?, override_condition_matching?

Constructor Details

This class inherits a constructor from CanCan::ModelAdapters::AbstractAdapter

Class Method Details

+ (Boolean) for_class?(model_class)

Returns:

  • (Boolean)


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# File 'lib/cancan/model_adapters/mongoid_adapter.rb', line 4

def self.for_class?(model_class)
  model_class <= Mongoid::Document
end

+ (Boolean) matches_conditions_hash?(subject, conditions)

Returns:

  • (Boolean)


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# File 'lib/cancan/model_adapters/mongoid_adapter.rb', line 19

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

+ (Boolean) override_conditions_hash_matching?(subject, conditions)

Returns:

  • (Boolean)


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# File 'lib/cancan/model_adapters/mongoid_adapter.rb', line 8

def self.override_conditions_hash_matching?(subject, conditions)
  conditions.any? do |k,v|
    key_is_not_symbol = lambda { !k.kind_of?(Symbol) }
    subject_value_is_array = lambda do
      subject.respond_to?(k) && subject.send(k).is_a?(Array)
    end

    key_is_not_symbol.call || subject_value_is_array.call
  end
end

Instance Method Details

- (Object) database_records



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# File 'lib/cancan/model_adapters/mongoid_adapter.rb', line 25

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
    # we only need to process can rules if
    # there are no rules with empty conditions
    rules = @rules.reject { |rule| rule.conditions.empty? && rule.base_behavior }
    process_can_rules = @rules.count == rules.count

    rules.inject(@model_class.all) do |records, rule|
      if process_can_rules && rule.base_behavior
        records.or rule.conditions
      elsif !rule.base_behavior
        records.excludes rule.conditions
      else
        records
      end
    end
  end
end