class Liquid::Increment
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
Public Class Methods
Source
# File lib/liquid/tags/increment.rb, line 18 def initialize(tag_name, markup, options) super @variable = markup.strip end
Calls superclass method
Liquid::Tag::new
Public Instance Methods
Source
# File lib/liquid/tags/increment.rb, line 23 def render(context) value = context.environments.first[@variable] ||= 0 context.environments.first[@variable] = value + 1 value.to_s end