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module ActiveModel
module MassAssignmentSecurity
class Sanitizer
# Returns all attributes not denied by the authorizer.
def sanitize(attributes, authorizer)
rejected = []
sanitized_attributes = attributes.reject do |key, value|
rejected << key if authorizer.deny?(key)
end
process_removed_attributes(rejected) unless rejected.empty?
sanitized_attributes
end
protected
def process_removed_attributes(attrs)
raise NotImplementedError, "#process_removed_attributes(attrs) suppose to be overwritten"
end
end
class LoggerSanitizer < Sanitizer
def initialize(target)
@target = target
super()
end
def logger
@target.logger
end
def logger?
@target.respond_to?(:logger) && @target.logger
end
def process_removed_attributes(attrs)
logger.warn "Can't mass-assign protected attributes: #{attrs.join(', ')}" if logger?
end
end
class StrictSanitizer < Sanitizer
def initialize(target = nil)
super()
end
def process_removed_attributes(attrs)
return if (attrs - insensitive_attributes).empty?
raise ActiveModel::MassAssignmentSecurity::Error.new(attrs)
end
def insensitive_attributes
['id']
end
end
class Error < StandardError
def initialize(attrs)
super("Can't mass-assign protected attributes: #{attrs.join(', ')}")
end
end
end
end
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