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Truncate helper accepts a :separator for a more legible result [#1807

…state:resolved]

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>
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1 parent 195fadb commit 5e190ef138a034bf86419ce4f4c343ae16bfc77b @airblade airblade committed with lifo Jan 28, 2009
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7 actionpack/lib/action_view/helpers/text_helper.rb
@@ -34,12 +34,16 @@ def concat(string, unused_binding = nil)
# Truncates a given +text+ after a given <tt>:length</tt> if +text+ is longer than <tt>:length</tt>
# (defaults to 30). The last characters will be replaced with the <tt>:omission</tt> (defaults to "...").
+ # Pass a <tt>:separator</tt> to truncate +text+ at a natural break.
#
# ==== Examples
#
# truncate("Once upon a time in a world far far away")
# # => Once upon a time in a world f...
#
+ # truncate("Once upon a time in a world far far away", :separator => ' ')
+ # # => Once upon a time in a world...
+ #
# truncate("Once upon a time in a world far far away", :length => 14)
# # => Once upon a...
#
@@ -71,7 +75,8 @@ def truncate(text, *args)
if text
l = options[:length] - options[:omission].mb_chars.length
chars = text.mb_chars
- (chars.length > options[:length] ? chars[0...l] + options[:omission] : text).to_s
+ stop = options[:separator] ? (chars.rindex(options[:separator].mb_chars, l) || l) : l
+ (chars.length > options[:length] ? chars[0...stop] + options[:omission] : text).to_s
end
end
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3 actionpack/test/template/text_helper_test.rb
@@ -49,6 +49,9 @@ def test_truncate_with_options_hash
assert_equal "This is a string that wil[...]", truncate("This is a string that will go longer then the default truncate length of 30", :omission => "[...]")
assert_equal "Hello W...", truncate("Hello World!", :length => 10)
assert_equal "Hello[...]", truncate("Hello World!", :omission => "[...]", :length => 10)
+ assert_equal "Hello[...]", truncate("Hello Big World!", :omission => "[...]", :length => 13, :separator => ' ')
+ assert_equal "Hello Big[...]", truncate("Hello Big World!", :omission => "[...]", :length => 14, :separator => ' ')
+ assert_equal "Hello Big[...]", truncate("Hello Big World!", :omission => "[...]", :length => 15, :separator => ' ')
end
if RUBY_VERSION < '1.9.0'

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