Module: Aegis::HasRole

Defined in:
lib/aegis/has_role.rb

Instance Method Summary collapse

Instance Method Details

#has_role(options = {}) ⇒ Object 



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# File 'lib/aegis/has_role.rb', line 14

def has_role(options = {})

  if options[:name_accessor]
    options[:name_reader] = "#{options[:name_accessor]}"
    options[:name_writer] = "#{options[:name_accessor]}="
    options.delete(:name_accessor)
  end

  self.class_eval do

    class_inheritable_accessor :aegis_role_name_reader, :aegis_role_name_writer

    self.aegis_role_name_reader = (options[:name_reader] || "role_name").to_sym
    self.aegis_role_name_writer = (options[:name_writer] || "role_name=").to_sym

    def aegis_role_name_reader
      self.class.class_eval{ aegis_role_name_reader }
    end

    def aegis_role_name_writer
      self.class.class_eval{ aegis_role_name_writer }
    end

    def aegis_role_name
      send(aegis_role_name_reader)
    end

    def aegis_role_name=(value)
      send(aegis_role_name_writer, value)
    end

    def role
      ::Permissions.find_role_by_name!(aegis_role_name)
    end

    def role=(role_or_name)
      self.aegis_role_name = if role_or_name.is_a?(Aegis::Role)
        role_or_name.name
      else
        role_or_name.to_s
      end
    end

    private

    # Delegate may_...? and may_...! methods to the user's role.
    def method_missing_with_aegis_permissions(symb, *args)
      method_name = symb.to_s
      if method_name =~ /^may_(.+?)[\!\?]$/
        role.send(symb, self, *args)
      elsif method_name =~ /^(.*?)\?$/ && queried_role = ::Permissions.find_role_by_name($1)
        role == queried_role
      else
        method_missing_without_aegis_permissions(symb, *args)
      end
    end

    alias_method_chain :method_missing, :aegis_permissions

    def respond_to_with_aegis_permissions?(symb, include_private = false)
      if symb.to_s =~ /^may_(.+?)[\!\?]$/
        true
      else
        respond_to_without_aegis_permissions?(symb, include_private)
      end
    end

    alias_method_chain :respond_to?, :aegis_permissions

    def set_default_aegis_role_name
      if new_record?
        self.aegis_role_name ||= self.class.aegis_default_role_name
      end
    end

  end

end

#validates_role_name(options = {}) ⇒ Object Also known as: validates_role 



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# File 'lib/aegis/has_role.rb', line 4

def validates_role_name(options = {})
  validates_each :role_name do |record, attr, value|
    options[:message] ||= ActiveRecord::Errors.default_error_messages[:inclusion]
    role = ::Permissions.find_role_by_name(value)
    record.errors.add attr, options[:message] if role.nil?
  end
end