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rails--rails/activemodel/lib/active_model/attribute_assignment.rb
Robin Dupret 95c2fc9679 Follow-up to #10776
The name `ActiveModel::AttributeAssignment::UnknownAttributeError` is
too implementation specific so let's move the constant directly under
the ActiveModel namespace.

Also since this constant used to be under the ActiveRecord namespace, to
make the upgrade path easier, let's avoid raising the former constant
when we deal with this error on the Active Record side.
2015-02-26 15:40:03 +01:00

52 lines
1.5 KiB
Ruby

require 'active_support/core_ext/hash/keys'
module ActiveModel
module AttributeAssignment
include ActiveModel::ForbiddenAttributesProtection
# Allows you to set all the attributes by passing in a hash of attributes with
# keys matching the attribute names.
#
# If the passed hash responds to <tt>permitted?</tt> method and the return value
# of this method is +false+ an <tt>ActiveModel::ForbiddenAttributesError</tt>
# exception is raised.
#
# class Cat
# include ActiveModel::AttributeAssignment
# attr_accessor :name, :status
# end
#
# cat = Cat.new
# cat.assign_attributes(name: "Gorby", status: "yawning")
# cat.name # => 'Gorby'
# cat.status => 'yawning'
# cat.assign_attributes(status: "sleeping")
# cat.name # => 'Gorby'
# cat.status => 'sleeping'
def assign_attributes(new_attributes)
if !new_attributes.respond_to?(:stringify_keys)
raise ArgumentError, "When assigning attributes, you must pass a hash as an argument."
end
return if new_attributes.blank?
attributes = new_attributes.stringify_keys
_assign_attributes(sanitize_for_mass_assignment(attributes))
end
private
def _assign_attributes(attributes)
attributes.each do |k, v|
_assign_attribute(k, v)
end
end
def _assign_attribute(k, v)
if respond_to?("#{k}=")
public_send("#{k}=", v)
else
raise UnknownAttributeError.new(self, k)
end
end
end
end