module ActiveModel::AttributeAssignment
Public Instance Methods
assign_attributes(new_attributes)
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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 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'
# File lib/active_model/attribute_assignment.rb, line 26 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.nil? || new_attributes.empty? attributes = new_attributes.stringify_keys _assign_attributes(sanitize_for_mass_assignment(attributes)) end
Private Instance Methods
_assign_attribute(k, v)
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# File lib/active_model/attribute_assignment.rb, line 44 def _assign_attribute(k, v) if respond_to?("#{k}=") public_send("#{k}=", v) else raise UnknownAttributeError.new(self, k) end end
_assign_attributes(attributes)
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# File lib/active_model/attribute_assignment.rb, line 38 def _assign_attributes(attributes) attributes.each do |k, v| _assign_attribute(k, v) end end