VirtusModel
A practical and pleasant union of Virtus and ActiveModel.
Installation
Ruby version 2.5.0 or greater is required.
$ gem install virtus_modelExamples
First, familiarize yourself with the Virtus and ActiveModel libraries.
#
# Class definitions
#
class ModelOne < VirtusModel::Base
attribute :name, String
validates :name, presence: true
end
class ModelTwo < VirtusModel::Base
attribute :models, Array[ModelOne]
validates :models, presence: true
end
#
# Class methods
#
raise unless ModelOne.attributes == [:name]
raise unless ModelOne.attribute?(:name)
raise if ModelOne.attribute?(:other)
raise unless ModelTwo.associations == [:models]
raise unless ModelTwo.association?(:models)
raise if ModelTwo.association?(:other)
#
# Instance methods
#
model1 = ModelOne.new(name: 'hello')
raise unless model1.attributes == { name: 'hello' }
raise unless model1.valid?
model1.assign_attributes(name: nil)
raise if model1.valid?
raise unless model1.errors[:name] == ["can't be blank"]
raise unless model1.update(name: 'hello')
model2 = ModelTwo.new(models: [model1.attributes])
raise unless model2.valid?
model2.assign_attributes(models: [])
raise if model2.valid?
raise unless model2.errors[:models] == ["can't be blank"]
raise if model2.update(models: [{ name: nil }])
raise unless model2.errors[:'models[0][name]'] == ["can't be blank"]
raise unless model2.update(models: [model1])
raise unless model2.export == { models: [{ name: 'hello' }] }
raise unless ModelTwo.new(model2.export) == model2