-
-
Save regedarek/d3a13d41e92a57b58985 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Leg | |
include ActiveModel::Validations | |
include ActiveModel::Naming | |
include ActiveModel::Conversion | |
include Virtus | |
attribute :start_day, Integer | |
attribute :end_day, Integer | |
end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# without Rails `serialize` macro, using our own getters/setters and serializeation | |
validate { legs.all?(&:valid?) } | |
# set default for column | |
after_initialize do | |
write_attribute(:legs, JSON.dump([])) if read_attribute(:legs).blank? | |
end | |
# getter | |
def legs | |
@legs ||= JSON.parse(read_attribute(:legs)).map { |attrs| Leg.new(attrs) } | |
end | |
# setter | |
def legs=(_legs) | |
@legs = _legs | |
end | |
# setter | |
# @presenter | |
def legs_attributes=(legs_attributes) | |
self.legs = legs_attributes.map { |attrs| Leg.new(attrs) } | |
write_attribute(:legs, JSON.dump(@legs)) | |
end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# using Rails `serialize` macro. | |
validate { legs.valid? } | |
serialize :legs, Legs | |
# Legs acts as a serializer for an array of Leg objects | |
class Legs | |
include ActiveModel::Validations | |
include ActiveModel::Naming | |
include ActiveModel::Conversion | |
include Virtus | |
attribute :legs, Array[Leg] | |
validate :legs_valid | |
def initialize(legs_attributes = []) | |
super(:legs => legs_attributes) | |
end | |
# delegate everything to the Array, so we don't have to do model.legs.legs.each | |
def method_missing(method_name, *args, &block) | |
legs.send(method_name, *args, &block) if legs.respond_to?(method_name) | |
end | |
private | |
def legs_valid | |
legs.all?(&:valid?) | |
end | |
end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment