# File lib/active_record/dynamic_matchers.rb, line 32 def match(model, name) klass = matchers.find { |k| name =~ k.pattern } klass.new(model, name) if klass end
# File lib/active_record/dynamic_matchers.rb, line 52 def initialize(model, name) @model = model @name = name.to_s @attribute_names = @name.match(self.class.pattern)[1].split('_and_') @attribute_names.map! { |n| @model.attribute_aliases[n] || n } end
# File lib/active_record/dynamic_matchers.rb, line 37 def pattern /^#{prefix}_([_a-zA-Z]\w*)#{suffix}$/ end
# File lib/active_record/dynamic_matchers.rb, line 41 def prefix raise NotImplementedError end
# File lib/active_record/dynamic_matchers.rb, line 45 def suffix '' end
# File lib/active_record/dynamic_matchers.rb, line 71 def body raise NotImplementedError end
# File lib/active_record/dynamic_matchers.rb, line 63 def define model.class_eval " def self.#{name}(#{signature}) #{body} end ", __FILE__, __LINE__ + 1 end
# File lib/active_record/dynamic_matchers.rb, line 59 def valid? attribute_names.all? { |name| model.columns_hash[name] || model.reflect_on_aggregation(name.to_sym) } end