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author | David Heinemeier Hansson <david@loudthinking.com> | 2006-05-31 23:25:36 +0000 |
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committer | David Heinemeier Hansson <david@loudthinking.com> | 2006-05-31 23:25:36 +0000 |
commit | 408fe5facc482f84194bbe79865a26b57b2cc883 (patch) | |
tree | 52164d53e521712f51e99238af349de0885f9985 /activesupport/lib/active_support/core_ext | |
parent | d31830cf9cc863ed2f98c2d4cb90cf0e5d93e73e (diff) | |
download | rails-408fe5facc482f84194bbe79865a26b57b2cc883.tar.gz rails-408fe5facc482f84194bbe79865a26b57b2cc883.tar.bz2 rails-408fe5facc482f84194bbe79865a26b57b2cc883.zip |
Added Array#to_s(:db) that'll produce a comma-separated list of ids [DHH] Split Grouping into its own file
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4387 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'activesupport/lib/active_support/core_ext')
3 files changed, 66 insertions, 39 deletions
diff --git a/activesupport/lib/active_support/core_ext/array.rb b/activesupport/lib/active_support/core_ext/array.rb index 243aeab423..d47b988255 100644 --- a/activesupport/lib/active_support/core_ext/array.rb +++ b/activesupport/lib/active_support/core_ext/array.rb @@ -1,44 +1,7 @@ require File.dirname(__FILE__) + '/array/conversions' +require File.dirname(__FILE__) + '/array/grouping' class Array #:nodoc: include ActiveSupport::CoreExtensions::Array::Conversions - - # Iterate over an array in groups of a certain size, padding any remaining - # slots with specified value (<tt>nil</tt> by default). - # - # E.g. - # - # %w(1 2 3 4 5 6 7).in_groups_of(3) {|g| p g} - # ["1", "2", "3"] - # ["4", "5", "6"] - # ["7", nil, nil] - def in_groups_of(number, fill_with = nil, &block) - require 'enumerator' - collection = dup - collection << fill_with until collection.size.modulo(number).zero? - grouped_collection = [] unless block_given? - collection.each_slice(number) do |group| - block_given? ? yield(group) : grouped_collection << group - end - grouped_collection unless block_given? - end - - # Divide the array into one or more subarrays based on a delimiting +value+ - # or the result of an optional block. - # - # ex. - # - # [1, 2, 3, 4, 5].split(3) # => [[1, 2], [4, 5]] - # (1..10).to_a.split { |i| i % 3 == 0 } # => [[1, 2], [4, 5], [7, 8], [10]] - def split(value = nil, &block) - block ||= Proc.new { |e| e == value } - inject([[]]) do |results, element| - if block.call(element) - results << [] - else - results.last << element - end - results - end - end + include ActiveSupport::CoreExtensions::Array::Grouping end diff --git a/activesupport/lib/active_support/core_ext/array/conversions.rb b/activesupport/lib/active_support/core_ext/array/conversions.rb index b516f58bff..35d010b164 100644 --- a/activesupport/lib/active_support/core_ext/array/conversions.rb +++ b/activesupport/lib/active_support/core_ext/array/conversions.rb @@ -26,6 +26,24 @@ module ActiveSupport #:nodoc: join '/' end + def self.included(klass) #:nodoc: + klass.send(:alias_method, :to_default_s, :to_s) + klass.send(:alias_method, :to_s, :to_formatted_s) + end + + def to_formatted_s(format = :default) + case format + when :db + if respond_to?(:empty?) && self.empty? + "null" + else + collect { |element| element.id }.join(",") + end + else + to_default_s + end + end + def to_xml(options = {}) raise "Not all elements respond to to_xml" unless all? { |e| e.respond_to? :to_xml } diff --git a/activesupport/lib/active_support/core_ext/array/grouping.rb b/activesupport/lib/active_support/core_ext/array/grouping.rb new file mode 100644 index 0000000000..6f28e1eb6d --- /dev/null +++ b/activesupport/lib/active_support/core_ext/array/grouping.rb @@ -0,0 +1,46 @@ +module ActiveSupport #:nodoc: + module CoreExtensions #:nodoc: + module Array #:nodoc: + module Grouping + # Iterate over an array in groups of a certain size, padding any remaining + # slots with specified value (<tt>nil</tt> by default). + # + # E.g. + # + # %w(1 2 3 4 5 6 7).in_groups_of(3) {|g| p g} + # ["1", "2", "3"] + # ["4", "5", "6"] + # ["7", nil, nil] + def in_groups_of(number, fill_with = nil, &block) + require 'enumerator' + collection = dup + collection << fill_with until collection.size.modulo(number).zero? + grouped_collection = [] unless block_given? + collection.each_slice(number) do |group| + block_given? ? yield(group) : grouped_collection << group + end + grouped_collection unless block_given? + end + + # Divide the array into one or more subarrays based on a delimiting +value+ + # or the result of an optional block. + # + # ex. + # + # [1, 2, 3, 4, 5].split(3) # => [[1, 2], [4, 5]] + # (1..10).to_a.split { |i| i % 3 == 0 } # => [[1, 2], [4, 5], [7, 8], [10]] + def split(value = nil, &block) + block ||= Proc.new { |e| e == value } + inject([[]]) do |results, element| + if block.call(element) + results << [] + else + results.last << element + end + results + end + end + end + end + end +end |