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require 'active_support/core_ext/module/delegation'
module ActiveModel
module MassAssignmentSecurity
class Sanitizer
def initialize(target=nil)
end
# Returns all attributes not denied by the authorizer.
def sanitize(attributes, authorizer)
sanitized_attributes = attributes.reject { |key, value| authorizer.deny?(key) }
debug_protected_attribute_removal(attributes, sanitized_attributes)
sanitized_attributes
end
protected
def debug_protected_attribute_removal(attributes, sanitized_attributes)
removed_keys = attributes.keys - sanitized_attributes.keys
process_removed_attributes(removed_keys) if removed_keys.any?
end
def process_removed_attributes(attrs)
raise NotImplementedError, "#process_removed_attributes(attrs) suppose to be overwritten"
end
end
class LoggerSanitizer < Sanitizer
delegate :logger, :to => :@target
def initialize(target)
@target = target
super
end
def logger?
@target.respond_to?(:logger) && @target.logger
end
def process_removed_attributes(attrs)
logger.debug "WARNING: Can't mass-assign protected attributes: #{attrs.join(', ')}" if logger?
end
end
class StrictSanitizer < Sanitizer
def process_removed_attributes(attrs)
return if (attrs - insensitive_attributes).empty?
raise ActiveModel::MassAssignmentSecurity::Error, "Can't mass-assign protected attributes: #{attrs.join(', ')}"
end
def insensitive_attributes
['id']
end
end
class Error < StandardError
end
end
end
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