Method: Riveter::Enquiry::ClassMethods#filter_with

Defined in:
lib/riveter/enquiry.rb

#filter_with(query_filter_klass = nil, &block) ⇒ Object 



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# File 'lib/riveter/enquiry.rb', line 20

def filter_with(query_filter_klass=nil, &block)
  raise "Filter already defined." if self.respond_to?(:query_filter_class)

  unless query_filter_klass
    raise ArgumentError, "Missing block" unless block_given?

    # define an anomymous class derived from QueryFilter
    # which invokes the block given in the classes context
    query_filter_klass = Class.new(QueryFilter::Base)
    query_filter_klass.class_eval(&block)

    # for anonymous classes, need to override the
    # model_name method so that forms etc can work
    enquiry_name = self.enquiry_name
    query_filter_klass.class_eval do
      define_singleton_method :model_name do
        enquiry_name
      end
    end
  end

  define_singleton_method :query_filter_class do
    query_filter_klass
  end

  define_method :query_filter_class do
    query_filter_klass
  end

  define_singleton_method :query_filter_attributes do
    query_filter_klass.attributes
  end
end