Created
January 26, 2013 14:22
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Just a crappy little Rails-helper for Twitter cards and Open Graph metadata.
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| require 'rubygems' | |
| require 'action_view' | |
| require 'erb' | |
| class MetadataHelper | |
| include ActionView::Helpers::TagHelper | |
| def initialize( opts = {} ) | |
| @title = opts[:title] | |
| @url = opts[:url] | |
| @description = opts[:description] | |
| @image_url = opts[:image_url] || opts[:image] | |
| @author = opts[:author] | |
| @type = opts[:type] | |
| end | |
| def twitter_card | |
| Array.new.tap do |arr| | |
| arr << mtag( 'twitter:card', 'summary' ) | |
| arr << mtag( 'twitter:url', @url ) | |
| arr << mtag( 'twitter:title', @title ) | |
| arr << mtag( 'twitter:description', @description ) | |
| arr << mtag( 'twitter:image', @image_url ) | |
| arr << mtag( 'twitter:author', @author ) | |
| end.compact | |
| end | |
| def open_graph | |
| Array.new.tap do |arr| | |
| arr << mtag( 'og:type', @type ) | |
| arr << mtag( 'og:url', @url ) | |
| arr << mtag( 'og:title', @title ) | |
| arr << mtag( 'og:description', @description ) | |
| arr << mtag( 'og:image', @image_url ) | |
| end.compact | |
| end | |
| def all | |
| [ twitter_card, open_graph ].flatten.join( "\n" ) | |
| end | |
| private | |
| def mtag( name, content ) | |
| tag( :meta, { name: name, content: content }, false, false ) if name && content | |
| end | |
| end | |
| template = ERB.new <<EOS | |
| <!DOCTYPE HTML> | |
| <html> | |
| <head> | |
| <%= helper.all %> | |
| </head> | |
| <body> | |
| <p>Hello people!</p> | |
| </body> | |
| </html> | |
| EOS | |
| helper = MetadataHelper.new( { | |
| title: 'Test', | |
| url: 'http://www.lukaszielinski.de', | |
| description: 'Just testing', | |
| type: 'article', | |
| author: '@lukaszielinski', | |
| image: 'http://mugs.mugbug.co.uk/500/mb.i_love_html_red_love_heart.coaster.jpg' | |
| } ) | |
| puts template.result( binding ) |
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