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.
# File lib/liquid/tags/if.rb, line 20 def initialize(tag_name, markup, tokens) @blocks = [] push_block('if', markup) super end
# File lib/liquid/tags/if.rb, line 36 def render(context) context.stack do @blocks.each do |block| if block.evaluate(context) return render_all(block.attachment, context) end end '' end end
# File lib/liquid/tags/if.rb, line 28 def unknown_tag(tag, markup, tokens) if ['elsif', 'else'].include?(tag) push_block(tag, markup) else super end end
# File lib/liquid/tags/if.rb, line 49 def push_block(tag, markup) block = if tag == 'else' ElseCondition.new else expressions = markup.scan(ExpressionsAndOperators).reverse raise(SyntaxError, SyntaxHelp) unless expressions.shift =~ Syntax condition = Condition.new($1, $2, $3) while not expressions.empty? operator = (expressions.shift).to_s.strip raise(SyntaxError, SyntaxHelp) unless expressions.shift.to_s =~ Syntax new_condition = Condition.new($1, $2, $3) raise SyntaxError, "invalid boolean operator" unless BOOLEAN_OPERATORS.include?(operator) new_condition.send(operator, condition) condition = new_condition end condition end @blocks.push(block) @nodelist = block.attach(Array.new) end