attribute_writer_missing(name, value) — ActiveModel::AttributeAssignment

attribute_writer_missing(name, value)

Like ‘BasicObject#method_missing`, #attribute_writer_missing is invoked when #assign_attributes is passed an unknown attribute name.

By default, #attribute_writer_missing raises an UnknownAttributeError.

class Rectangle
  include ActiveModel::AttributeAssignment

  attr_accessor :length, :width

  def attribute_writer_missing(name, value)
    Rails.logger.warn "Tried to assign to unknown attribute #{name}"
  end
end

rectangle = Rectangle.new
rectangle.assign_attributes(height: 10) # => Logs "Tried to assign to unknown attribute 'height'"

Parameters

name req
value req

Source

# File activemodel/lib/active_model/attribute_assignment.rb, line 56
    def attribute_writer_missing(name, value)
      raise UnknownAttributeError.new(self, name)
    end

Defined in activemodel/lib/active_model/attribute_assignment.rb line 56 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveModel::AttributeAssignment

Signature

Parameters