module Assignment::Attributes

Public Instance Methods

assign_attributes(new_attributes) click to toggle source

Allows you to set all the attributes by passing in a hash of attributes with keys matching the attribute names.

class Cat
  include Assignment::Attributes
  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/assignment/attributes.rb, line 21
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(attributes)
end

Private Instance Methods

_assign_attribute(k, v) click to toggle source
# File lib/assignment/attributes.rb, line 39
def _assign_attribute(k, v)
  if respond_to?("#{k}=")
    public_send("#{k}=", v)
  else
    raise UnknownAttributeError.new(self, k)
  end
end
_assign_attributes(attributes) click to toggle source
# File lib/assignment/attributes.rb, line 33
def _assign_attributes(attributes)
  attributes.each do |k, v|
    _assign_attribute(k, v)
  end
end