Contents

require 'active_support/all'

module Embeddable::Concerns
  module Embeddable
    extend ActiveSupport::Concern

    SERVICES = {
      youtube: [
        %r{^https?://(?:(?:www|m)\.)?youtube\.com/watch\?v=([^&]+)},
        %r{^https?://(?:(?:www|m)\.)?youtu\.be/([^?]+)}
      ]
    }

    module ClassMethods
      # Denotes an embeddable for given name
      #
      # Options:
      #   :from (source property for this embeddable, required)
      #
      # Example:
      #
      #   class Post
      #     include Concerns::Embeddable
      #     embeddable :video, from: :video_url
      #   end
      #
      def embeddable(name, options = {})
        source = options.fetch :from

        define_method "#{name}_type" do
          url = send(source)
          return if url.blank?

          SERVICES.map do |service, patterns|
            service if patterns.any? { |pattern| url[pattern] }
          end.compact.first
        end

        define_method "#{name}_id" do
          url = send(source)
          return if url.blank?

          SERVICES.map do |service, patterns|
            patterns.map { |pattern| url[pattern, 1] }
          end.flatten.compact.first
        end

        SERVICES.each do |service, pattern|

          define_method "#{name}_on_#{service}?" do
            send("#{name}_type") == service
          end

        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
embeddable-0.0.1	lib/embeddable/concerns/embeddable.rb