Class: Liquid::If

Inherits:
Block show all
Defined in:
lib/liquid/tags/if.rb

Overview

If is the conditional block

{% if user.admin %}
  Admin user!
{% else %}
  Not admin user
{% endif %}

 There are {% if count < 5 %} less {% else %} more {% endif %} items than you need.

Direct Known Subclasses

Unless

Constant Summary

Syntax =
/(#{QuotedFragment})\s*([=!<>a-z_]+)?\s*(#{QuotedFragment})?/o
ExpressionsAndOperators =
/(?:\b(?:\s?and\s?|\s?or\s?)\b|(?:\s*(?!\b(?:\s?and\s?|\s?or\s?)\b)(?:#{QuotedFragment}|\S+)\s*)+)/o
BOOLEAN_OPERATORS =
%w(and or)

Constants inherited from Block

Block::ContentOfVariable, Block::FullToken, Block::IsTag, Block::IsVariable

Instance Attribute Summary

Attributes inherited from Tag

#options, #warnings

Instance Method Summary (collapse)

Methods inherited from Block

#blank?, #block_delimiter, #block_name, #create_variable, #end_tag, #parse, #warnings

Methods inherited from Tag

#blank?, #name, parse, #parse, #parse_with_selected_parser

Constructor Details

- (If) initialize(tag_name, markup, options)

Returns a new instance of If



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# File 'lib/liquid/tags/if.rb', line 17

def initialize(tag_name, markup, options)
  super
  @blocks = []
  push_block('if'.freeze, markup)
end

Instance Method Details

- (Object) nodelist



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# File 'lib/liquid/tags/if.rb', line 23

def nodelist
  @blocks.map(&:attachment).flatten
end

- (Object) render(context)



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# File 'lib/liquid/tags/if.rb', line 35

def render(context)
  context.stack do
    @blocks.each do |block|
      if block.evaluate(context)
        return render_all(block.attachment, context)
      end
    end
    ''.freeze
  end
end

- (Object) unknown_tag(tag, markup, tokens)



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# File 'lib/liquid/tags/if.rb', line 27

def unknown_tag(tag, markup, tokens)
  if ['elsif'.freeze, 'else'.freeze].include?(tag)
    push_block(tag, markup)
  else
    super
  end
end