Class: Arrays::ArrayDeleteTag

Inherits:
ArrayTag
  • Object
show all
Defined in:
lib/liquid-arrays/array_delete_tag.rb

Instance Method Summary collapse

Methods inherited from ArrayTag

#get_array, #out_of_bounds?

Instance Method Details

#parse(tokens) ⇒ Object 



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# File 'lib/liquid-arrays/array_delete_tag.rb', line 3

def parse(tokens)
  super
  parser = AttributeParser.new(@parse_context, @markup)
  @array_name = parser.consume_attribute('array', :id)
  @value = parser.consume_attribute('value')
  @index = parser.consume_attribute('index', :integer)
  parser.finish
  if @value.nil? && @index.nil?
    raise Liquid::ArgumentError, 'no value or index specified'
  elsif !@value.nil? && !@index.nil?
    raise Liquid::ArgumentError, 'only value or index can be specified'
  end
end

#render(context) ⇒ Object 



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# File 'lib/liquid-arrays/array_delete_tag.rb', line 17

def render(context)
  array = get_array(context, false)
  unless array.nil?
    if @index.nil?
      array.delete(@value.render(context))
    else
      index = @index.render(context)
      array.delete_at(index) if index.is_a?(Integer) && !out_of_bounds?(array, index)
    end
  end
  ''
end