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Slice filter for arrays.

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This commit is contained in:
Florian Weingarten
2014-08-05 16:44:59 +00:00
parent 66ae7f3ec0
commit fb6f9c1c13
2 changed files with 20 additions and 1 deletions
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7
lib/liquid/standardfilters.rb
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@@ -45,7 +45,12 @@ module Liquid
def slice(input, offset, length=nil)
offset = Integer(offset)
length = length ? Integer(length) : 1
input.to_s.slice(offset, length) || ''
if input.is_a?(Array)
input.slice(offset, length) || []
else
input.to_s.slice(offset, length) || ''
end
end
# Truncate a string down to x characters

14
test/integration/standard_filter_test.rb
View File

@@ -78,6 +78,20 @@ class StandardFiltersTest < Minitest::Test
assert_equal '', @filters.slice('foobar', -100, 10)
end
def test_slice_on_arrays
input = 'foobar'.split(//)
assert_equal %w{o o b}, @filters.slice(input, 1, 3)
assert_equal %w{o o b a r}, @filters.slice(input, 1, 1000)
assert_equal %w{}, @filters.slice(input, 1, 0)
assert_equal %w{o}, @filters.slice(input, 1, 1)
assert_equal %w{b a r}, @filters.slice(input, 3, 3)
assert_equal %w{a r}, @filters.slice(input, -2, 2)
assert_equal %w{a r}, @filters.slice(input, -2, 1000)
assert_equal %w{r}, @filters.slice(input, -1)
assert_equal %w{}, @filters.slice(input, 100, 10)
assert_equal %w{}, @filters.slice(input, -100, 10)
end
def test_truncate
assert_equal '1234...', @filters.truncate('1234567890', 7)
assert_equal '1234567890', @filters.truncate('1234567890', 20)