= Scope Builder Build up named scopes conditionally. == Install First specify it in your Rails config. config.gem 'ryanb-scope-builder', :lib => 'scope_builder', :source => 'http://gems.github.com' And then install it. rake gems:install Rails 2.1 or later required. == Usage This gem adds the scope_builder method to all Active Record models. A builder behaves exactly like any other named scope except that calling other named scopes on it will alter the builder itself rather than returning a new named scope. builder = Product.scope_builder builder.released.visible # call a couple named scopes to change builder builder.cheap if only_show_cheap_products? # build scopes conditionally The scope_builder method can also take a block which will return the builder. This is useful when you are using the builder in a model search method. # in product model def self.search(options) scope_builder do |builder| builder.released.visible builder.cheap if options[:cheap] end end The scope_builder method can also be called on an existing scope. products = Product.released.visible builder = products.scope_builder builder.cheap if only_show_cheap_products? == Development This project can be found on github at the following URL. http://github.com/ryanb/scope-builder/ If you would like to contribute to this project, please fork the repository and send me a pull request.