Module: CouchPotato::Persistence::Properties::ClassMethods

Defined in:
lib/couch_potato/persistence/properties.rb

Instance Method Summary collapse

Instance Method Details

#property(name, options = {}) ⇒ Object

Declare a property on a model class. Properties are not typed by default. You can store anything in a property that can be serialized into JSON. If you want a property to be of a custom class you have to define it using the :type option.

example:

class Book
  property :title
  property :year
  property :publisher, type: Publisher
  property :published_at, default: -> { Date.current }
  property :next_year, default: ->(book) { book.year + 1 }
end



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# File 'lib/couch_potato/persistence/properties.rb', line 87

def property(name, options = {})
  undefine_attribute_methods
  define_attribute_methods property_names + [name]
  properties << SimpleProperty.new(self, name, options)
  remove_attribute_accessors_from_activesupport_module
end

#property_names ⇒ Object

returns all the property names of a model class that have been defined using the #property method

example:

class Book
  property :title
  property :year
end
Book.property_names # => [:title, :year]



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# File 'lib/couch_potato/persistence/properties.rb', line 71

def property_names
  properties.map(&:name)
end

#remove_attribute_accessors_from_activesupport_module ⇒ Object 



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# File 'lib/couch_potato/persistence/properties.rb', line 94

def remove_attribute_accessors_from_activesupport_module
  active_support_module = ancestors[1..-1].find{|m| m.name.nil? && (property_names - m.instance_methods).empty?}
  if active_support_module
    property_names.each do |name|
      active_support_module.send :remove_method, name if active_support_module.instance_methods.include?(name)
    end
  end
end