Jekyll Category Listing Plugin

tag_category_list.rb

module Jekyll
  class CategoryListTag < Liquid::Tag
    # safe true
    
    def initialize(tag_name, text, tokens)
      super
    end

    def render(context)
      html = ""
      categories = context.registers[:site].categories
      categories.each do |cat, posts|
        html << "<a href='/category/#{cat}/' class='radius label label-default'>#{cat}</a> "
      end
      html
    end
  end
end

Liquid::Template.register_tag('category_list', Jekyll::CategoryListTag)