/Ruby on Rails 6.0

module ActiveModel::AttributeAssignment

Public Instance Methods

assign_attributes(new_attributes) Show source
# File activemodel/lib/active_model/attribute_assignment.rb, line 28
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, #{new_attributes.class} passed."
  return if new_attributes.empty?

  attributes = new_attributes.stringify_keys

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.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'
Also aliased as: attributes=
Alias for: assign_attributes

© 2004–2019 David Heinemeier Hansson
Licensed under the MIT License.