FeatureModeling

feature_modeling.rb

# models/feature.rb
class Feature
  validates :name, presence: true, uniqueness: true
end

# models/feature_provider.rb
class FeatureProvider
  belongs_to :feature
  belongs_to :provider, polymorphic: true
  
  validates_presence_of :feature, :provider
end

# models/apartment.rb
class Apartment
  has_many :feature_providers, as: :provider, dependend: :destroy
  has_many :features, through: :feature_providers
end

# models/neightborhood.rb
class Apartment
  has_many :feature_providers, as: :provider, dependend: :destroy
  has_many :features, through: :feature_providers
end