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module ActiveModel::AttributeAssignment

Public instance methods

Also aliased as: attributes=.

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 permitted? method and the return value of this method is false an ActiveModel::ForbiddenAttributesError exception is raised.

class Cat
  include ActiveModel::AttributeAssignment
  attr_accessor :name, :status

cat =
cat.assign_attributes(name: "Gorby", status: "yawning") # => 'Gorby'
cat.status # => 'yawning'
cat.assign_attributes(status: "sleeping") # => 'Gorby'
cat.status # => 'sleeping'
Source code GitHub
# File activemodel/lib/active_model/attribute_assignment.rb, line 28
def assign_attributes(new_attributes)
  unless new_attributes.respond_to?(:each_pair)
    raise ArgumentError, "When assigning attributes, you must pass a hash as an argument, #{new_attributes.class} passed."
  return if new_attributes.empty?


Alias for: assign_attributes.

Definition files