SEO Friendly URL on Ruby on Rails

Rails 自動的 url Link 是 "/post/1234"
SEO Friendly URL "/post/how-to-buy-cheap-SSD" or "/post/1234-how-to-buy-cheap-SSD"


係個Class - Define method

class Article 
def to_param
"#{id}-#{name.parameterize}"
end
end

當 <%= link_to article.name, topic %>
生成 "/post/1234-how-to-buy-cheap-SSD"