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Contents
# See: http://heypanda.com/posts/63-Extending-Your-Models-Using-Custom-Plugins-Or-A-Brief-Introduction-to-Metaprogramming
module Postable
def self.included(base)
base.extend(ClassMethods)
end
module ClassMethods
def marks_up(attribute)
before_validation "convert_#{attribute}_to_markdown".to_sym
class_eval <<-EOC
def convert_#{attribute}_to_markdown
unless self.#{attribute}.blank?
self.#{attribute}_html = RDiscount.new(#{attribute}).to_html
end
end
private :convert_#{attribute}_to_markdown
EOC
end
def slugifies(attribute)
before_validation "convert_#{attribute}_to_slug".to_sym
class_eval <<-EOC
def convert_#{attribute}_to_slug
if self.#{attribute}_slug.blank?
self.#{attribute}_slug = generate_slug(#{attribute})
end
end
private :convert_#{attribute}_to_slug
EOC
end
end
private
# See: http://stackoverflow.com/questions/1302022/best-way-to-generate-slugs-human-readable-ids-in-rails
def generate_slug(text)
return if text.blank?
#strip the string
slug = text.strip.downcase
#blow away apostrophes
slug.gsub! /['`]/,""
# @ --> at, and & --> and
slug.gsub! /\s*@\s*/, " at "
slug.gsub! /\s*&\s*/, " and "
#replace all non alphanumeric, underscore with dash
slug.gsub! /\s*[^A-Za-z0-9\-]\s*/, '-'
#convert double dash to single
slug.gsub! /_+/,"-"
#strip off leading/trailing dashes
slug.gsub! /\A[-\.]+|[-\.]+\z/,""
slug
end
end
Version data entries
5 entries across 5 versions & 1 rubygems