Module: Sequent::Core::Helpers::AttributeSupport::ClassMethods

Defined in:
lib/sequent/core/helpers/attribute_support.rb

Overview

module containing class methods to be added

Instance Method Summary collapse

Instance Method Details

#array(type) ⇒ Object

Allows you to define something is an array of a type Example:

attrs trainees: array(Person)



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# File 'lib/sequent/core/helpers/attribute_support.rb', line 103

def array(type)
  ArrayWithType.new(type)
end

#attrs(args) ⇒ Object 



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# File 'lib/sequent/core/helpers/attribute_support.rb', line 54

def attrs(args)
  @types ||= {}
  @types.merge!(args)
  associations = []
  args.each do |attribute, type|
    attr_accessor attribute

    if included_modules.include?(Sequent::Core::Helpers::TypeConversionSupport)
      Sequent::Core::Helpers::DefaultValidators.for(type).add_validations_for(self, attribute)
    end

    if type.instance_of?(Sequent::Core::Helpers::ArrayWithType)
      associations << attribute
    elsif included_modules.include?(ActiveModel::Validations) &&
          type.included_modules.include?(Sequent::Core::Helpers::AttributeSupport)
      associations << attribute
    end
  end
  if included_modules.include?(ActiveModel::Validations) && associations.present?
    validates_with Sequent::Core::Helpers::AssociationValidator, associations: associations
  end
  # Generate method that sets all defined attributes based on the attrs hash.
  class_eval <<EOS
    def update_all_attributes(attrs)
      super if defined?(super)
      ensure_known_attributes(attrs)
      #{@types.map do |attribute, _|
          "@#{attribute} = attrs[:#{attribute}]"
        end.join("\n            ")}
      self
    end
EOS

  class_eval <<EOS
     def update_all_attributes_from_json(attrs)
       super if defined?(super)
       #{@types.map do |attribute, type|
           "@#{attribute} = #{type}.deserialize_from_json(attrs['#{attribute}'])"
         end.join("\n           ")}
     end
EOS
end

#deserialize_from_json(args) ⇒ Object 



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# File 'lib/sequent/core/helpers/attribute_support.rb', line 107

def deserialize_from_json(args)
  unless args.nil?
    obj = allocate

    upcast!(args)

    obj.update_all_attributes_from_json(args)
    obj
  end
end

#numeric?(object) ⇒ Boolean

Returns:



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# File 'lib/sequent/core/helpers/attribute_support.rb', line 118

def numeric?(object)
  true if Float(object)
rescue StandardError
  false
end

#types ⇒ Object 



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# File 'lib/sequent/core/helpers/attribute_support.rb', line 43

def types
  @types ||= {}
  return @merged_types if @merged_types

  @merged_types = is_a?(Class) && superclass.respond_to?(:types) ? @types.merge(superclass.types) : @types
  included_modules.select { |m| m.include? Sequent::Core::Helpers::AttributeSupport }.each do |mod|
    @merged_types.merge!(mod.types)
  end
  @merged_types
end

#upcast(&block) ⇒ Object 



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# File 'lib/sequent/core/helpers/attribute_support.rb', line 124

def upcast(&block)
  @upcasters ||= []
  @upcasters.push(block)
end

#upcast!(hash) ⇒ Object 



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# File 'lib/sequent/core/helpers/attribute_support.rb', line 129

def upcast!(hash)
  return if @upcasters.nil?

  @upcasters.each do |upcaster|
    upcaster.call(hash)
  end
end