blog/plugins/config_tag.rb

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require 'json'
class ConfigTag < Liquid::Tag
def initialize(tag_name, options, tokens)
super
options = options.split(' ').map {|i| i.strip }
@key = options.slice!(0)
@tag = nil
@classname = nil
options.each do |option|
@tag = $1 if option =~ /tag:(\S+)/
@classname = $1 if option =~ /classname:(\S+)/
end
end
def render(context)
config_tag(context.registers[:site].config, @key, @tag, @classname)
end
end
def config_tag(config, key, tag=nil, classname=nil)
options = key.split('.').map { |k| config[k] }.last #reference objects with dot notation
tag ||= 'div'
classname ||= key.sub(/_/, '-').sub(/\./, '-')
output = "<#{tag} class='#{classname}'"
if options.respond_to? 'keys'
options.each do |k,v|
unless v.nil?
v = v.join ',' if v.respond_to? 'join'
v = v.to_json if v.respond_to? 'keys'
output += " data-#{k.sub'_','-'}='#{v}'"
end
end
elsif options.respond_to? 'join'
output += " data-value='#{config[key].join(',')}'"
else
output += " data-value='#{config[key]}'"
end
output += "></#{tag}>"
end
Liquid::Template.register_tag('config_tag', ConfigTag)