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Add forloop.parentloop as a reference to the parent loop

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This commit is contained in:
Justin Li 2015-02-04 12:43:09 -05:00
parent 3476a556dd
commit 205bd19d3f
2 changed files with 28 additions and 8 deletions
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20
lib/liquid/tags/for.rb
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@ -42,6 +42,7 @@ module Liquid
# where 0 is the last item.
# forloop.first:: Returns true if the item is the first item.
# forloop.last:: Returns true if the item is the last item.
# forloop.parentloop:: Provides access to the parent loop, if present.
#
class For < Block
Syntax = /\A(#{VariableSegment}+)\s+in\s+(#{QuotedFragment}+)\s*(reversed)?/o
@ -98,18 +99,21 @@ module Liquid
# Store our progress through the collection for the continue flag
context.registers[:for][@name] = from + segment.length
parent_loop = context['forloop'.freeze]
context.stack do
segment.each_with_index do |item, index|
context[@variable_name] = item
context['forloop'.freeze] = {
'name'.freeze => @name,
'length'.freeze => length,
'index'.freeze => index + 1,
'index0'.freeze => index,
'rindex'.freeze => length - index,
'rindex0'.freeze => length - index - 1,
'first'.freeze => (index == 0),
'last'.freeze => (index == length - 1)
'name'.freeze => @name,
'length'.freeze => length,
'index'.freeze => index + 1,
'index0'.freeze => index,
'rindex'.freeze => length - index,
'rindex0'.freeze => length - index - 1,
'first'.freeze => (index == 0),
'last'.freeze => (index == length - 1),
'parentloop'.freeze => parent_loop
}
result << @for_block.render(context)

16
test/integration/tags/for_tag_test.rb
View File

@ -298,6 +298,22 @@ HERE
'string' => "test string")
end
def test_for_parentloop_references_parent_loop
assert_template_result('1.1 1.2 1.3 2.1 2.2 2.3 ',
'{% for inner in outer %}{% for k in inner %}' +
'{{ forloop.parentloop.index }}.{{ forloop.index }} ' +
'{% endfor %}{% endfor %}',
'outer' => [[1, 1, 1], [1, 1, 1]])
end
def test_for_parentloop_nil_when_not_present
assert_template_result('.1 .2 ',
'{% for inner in outer %}' +
'{{ forloop.parentloop.index }}.{{ forloop.index }} ' +
'{% endfor %}',
'outer' => [[1, 1, 1], [1, 1, 1]])
end
def test_blank_string_not_iterable
assert_template_result('', "{% for char in characters %}I WILL NOT BE OUTPUT{% endfor %}", 'characters' => '')
end