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Contents?: true
Size: 810 Bytes
Versions: 23
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Stored size: 810 Bytes
Contents
module Liquid
# increment is used in a place where one needs to insert a counter
# into a template, and needs the counter to survive across
# multiple instantiations of the template.
# (To achieve the survival, the application must keep the context)
#
# if the variable does not exist, it is created with value 0.
#
# Hello: {% increment variable %}
#
# gives you:
#
# Hello: 0
# Hello: 1
# Hello: 2
#
class Increment < Tag
def initialize(tag_name, markup, options)
super
@variable = markup.strip
end
def render(context)
value = context.environments.first[@variable] ||= 0
context.environments.first[@variable] = value + 1
value.to_s
end
end
Template.register_tag('increment'.freeze, Increment)
end
Version data entries
23 entries across 23 versions & 4 rubygems