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Changeset 4387

Timestamp:

05/31/06 23:25:36 (2 years ago)

Author:

david

Message:

Added Array#to_s(:db) that'll produce a comma-separated list of ids [DHH] Split Grouping into its own file

Files:

r4314	r4387
933	933	end
934	934
	935	def test_quoting_arrays
	936	replies = Reply.find(:all, :conditions => [ "id IN (?)", topics(:first).replies.to_s(:db) ])
	937	assert_equal topics(:first).replies.size, replies.size
	938
	939	replies = Reply.find(:all, :conditions => [ "id IN (?)", [].to_s(:db) ])
	940	assert_equal 0, replies.size
	941	end
	942
935	943	MyObject = Struct.new :attribute1, :attribute2
936	944

r4359	r4387
1	1	SVN
	2
	3	* Added Array#to_s(:db) that'll produce a comma-separated list of ids [DHH]. Example:
	4
	5	Purchase.find(:all, :conditions => [ "product_id IN (?)", shop.products.to_s(:db) ])
2	6
3	7	* Normalize classify's argument to a String so that it plays nice with Symbols. [Marcel Molina Jr.]

r4345	r4387
1	1	require File.dirname(__FILE__) + '/array/conversions'
	2	require File.dirname(__FILE__) + '/array/grouping'
2	3
3	4	class Array #:nodoc:
4	5	include ActiveSupport::CoreExtensions::Array::Conversions
5
6		# Iterate over an array in groups of a certain size, padding any remaining
7		# slots with specified value (<tt>nil</tt> by default).
8		#
9		# E.g.
10		#
11		# %w(1 2 3 4 5 6 7).in_groups_of(3) {\|g\| p g}
12		# ["1", "2", "3"]
13		# ["4", "5", "6"]
14		# ["7", nil, nil]
15		def in_groups_of(number, fill_with = nil, &block)
16		require 'enumerator'
17		collection = dup
18		collection << fill_with until collection.size.modulo(number).zero?
19		grouped_collection = [] unless block_given?
20		collection.each_slice(number) do \|group\|
21		block_given? ? yield(group) : grouped_collection << group
22		end
23		grouped_collection unless block_given?
24		end
25
26		# Divide the array into one or more subarrays based on a delimiting +value+
27		# or the result of an optional block.
28		#
29		# ex.
30		#
31		# [1, 2, 3, 4, 5].split(3) # => [[1, 2], [4, 5]]
32		# (1..10).to_a.split { \|i\| i % 3 == 0 } # => [[1, 2], [4, 5], [7, 8], [10]]
33		def split(value = nil, &block)
34		block \|\|= Proc.new { \|e\| e == value }
35		inject([[]]) do \|results, element\|
36		if block.call(element)
37		results << []
38		else
39		results.last << element
40		end
41		results
42		end
43		end
	6	include ActiveSupport::CoreExtensions::Array::Grouping
44	7	end

r3901	r4387
27	27	end
28	28
	29	def self.included(klass) #:nodoc:
	30	klass.send(:alias_method, :to_default_s, :to_s)
	31	klass.send(:alias_method, :to_s, :to_formatted_s)
	32	end
	33
	34	def to_formatted_s(format = :default)
	35	case format
	36	when :db
	37	if respond_to?(:empty?) && self.empty?
	38	"null"
	39	else
	40	collect { \|element\| element.id }.join(",")
	41	end
	42	else
	43	to_default_s
	44	end
	45	end
	46
29	47	def to_xml(options = {})
30	48	raise "Not all elements respond to to_xml" unless all? { \|e\| e.respond_to? :to_xml }

r4345	r4387
14	14	end
15	15
16		class ArrayExt~~Conversion~~Tests < Test::Unit::TestCase
	16	class ArrayExtToSentenceTests < Test::Unit::TestCase
17	17	def test_plain_array_to_sentence
18	18	assert_equal "", [].to_sentence
…	…
37	37	def test_one_element
38	38	assert_equal "one", ['one'].to_sentence
	39	end
	40	end
	41
	42	class ArrayExtToSTests < Test::Unit::TestCase
	43	def test_to_s_db
	44	collection = [
	45	Class.new { def id() 1 end }.new,
	46	Class.new { def id() 2 end }.new,
	47	Class.new { def id() 3 end }.new
	48	]
	49
	50	assert_equal "null", [].to_s(:db)
	51	assert_equal "1,2,3", collection.to_s(:db)
39	52	end
40	53	end