Class: Liquid::Decrement

Inherits:
Tag
  • Object
show all
Defined in:
lib/liquid/tags/decrement.rb

Instance Attribute Summary collapse

Attributes inherited from Tag

#line_number, #nodelist, #parse_context, #tag_name

Instance Method Summary collapse

Methods inherited from Tag

#blank?, disable_tags, #name, parse, #parse, #raw, #render

Methods included from ParserSwitching

#parse_with_selected_parser, #strict_parse_with_error_mode_fallback

Constructor Details

#initialize(tag_name, markup, options) ⇒ Decrement

Returns a new instance of Decrement.



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# File 'lib/liquid/tags/decrement.rb', line 28

def initialize(tag_name, markup, options)
  super
  @variable_name = markup.strip
end

Instance Attribute Details

#variable_name ⇒ Object (readonly)

Returns the value of attribute variable_name.



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# File 'lib/liquid/tags/decrement.rb', line 26

def variable_name
  @variable_name
end

Instance Method Details

#render_to_output_buffer(context, output) ⇒ Object 



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# File 'lib/liquid/tags/decrement.rb', line 33

def render_to_output_buffer(context, output)
  counter_environment = context.environments.first
  value = counter_environment[@variable_name] || 0
  value -= 1
  counter_environment[@variable_name] = value
  output << value.to_s
  output
end