Contents

# TODO remove this from the plugin for v3.
module ValidatesTimeliness

  def self.enable_datetime_select_invalid_value_extension!
    ::ActionView::Helpers::InstanceTag.send(:include, ValidatesTimeliness::ActionView::InstanceTag)
  end

  module ActionView

    # Intercepts the date and time select helpers to reuse the values from the
    # the params rather than the parsed value. This allows invalid date/time
    # values to be redisplayed instead of blanks to aid correction by the user.
    # Its a minor usability improvement which is rarely an issue for the user.
    #
    module InstanceTag

      def self.included(base)
        selector_method = Rails::VERSION::STRING.to_f < 2.2 ? :date_or_time_select : :datetime_selector
        base.class_eval do
          alias_method :datetime_selector_without_timeliness, selector_method
          alias_method selector_method, :datetime_selector_with_timeliness
        end
        base.alias_method_chain :value, :timeliness
      end

      TimelinessDateTime = Struct.new(:year, :month, :day, :hour, :min, :sec)

      def datetime_selector_with_timeliness(*args)
        @timeliness_date_or_time_tag = true
        datetime_selector_without_timeliness(*args)
      end

      def value_with_timeliness(object)
        unless @timeliness_date_or_time_tag && @template_object.params[@object_name]
          return value_without_timeliness(object)
        end

        pairs = @template_object.params[@object_name].select {|k,v| k =~ /^#{@method_name}\(/ }
        return value_without_timeliness(object) if pairs.empty?

        values = pairs.map do |(param, value)|
          position = param.scan(/\(([0-9]*).*\)/).first.first
          [position, value]
        end.sort {|a,b| a[0] <=> b[0] }.map {|v| v[1] }

        TimelinessDateTime.new(*values)
      end

    end

  end
end

Version data entries

4 entries across 4 versions & 2 rubygems

Version	Path
validates_timeliness-2.3.2	lib/validates_timeliness/action_view/instance_tag.rb
szilm-validates_timeliness-2.3.1	lib/validates_timeliness/action_view/instance_tag.rb
validates_timeliness-2.3.1	lib/validates_timeliness/action_view/instance_tag.rb
validates_timeliness-2.3.0	lib/validates_timeliness/action_view/instance_tag.rb