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Removes acts_as_list plugin.

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git-svn-id: http://svn.redmine.org/redmine/trunk@16872 e93f8b46-1217-0410-a6f0-8f06a7374b81
This commit is contained in:
Jean-Philippe Lang
2017-07-23 16:19:34 +00:00
parent c1e7146498
commit 1ab658db59
4 changed files with 0 additions and 639 deletions
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23
lib/plugins/acts_as_list/README
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ActsAsList
==========
This acts_as extension provides the capabilities for sorting and reordering a number of objects in a list. The class that has this specified needs to have a +position+ column defined as an integer on the mapped database table.
Example
=======
class TodoList < ActiveRecord::Base
has_many :todo_items, :order => "position"
end
class TodoItem < ActiveRecord::Base
belongs_to :todo_list
acts_as_list :scope => :todo_list
end
todo_list.first.move_to_bottom
todo_list.last.move_higher
Copyright (c) 2007 David Heinemeier Hansson, released under the MIT license

3
lib/plugins/acts_as_list/init.rb
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$:.unshift "#{File.dirname(__FILE__)}/lib"
require 'active_record/acts/list'
ActiveRecord::Base.class_eval { include ActiveRecord::Acts::List }

281
lib/plugins/acts_as_list/lib/active_record/acts/list.rb
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module ActiveRecord
module Acts #:nodoc:
module List #:nodoc:
def self.included(base)
base.extend(ClassMethods)
end
# This +acts_as+ extension provides the capabilities for sorting and reordering a number of objects in a list.
# The class that has this specified needs to have a +position+ column defined as an integer on
# the mapped database table.
#
# Todo list example:
#
# class TodoList < ActiveRecord::Base
# has_many :todo_items, :order => "position"
# end
#
# class TodoItem < ActiveRecord::Base
# belongs_to :todo_list
# acts_as_list :scope => :todo_list
# end
#
# todo_list.first.move_to_bottom
# todo_list.last.move_higher
module ClassMethods
# Configuration options are:
#
# * +column+ - specifies the column name to use for keeping the position integer (default: +position+)
# * +scope+ - restricts what is to be considered a list. Given a symbol, it'll attach <tt>_id</tt>
# (if it hasn't already been added) and use that as the foreign key restriction. It's also possible
# to give it an entire string that is interpolated if you need a tighter scope than just a foreign key.
# Example: <tt>acts_as_list :scope => 'todo_list_id = #{todo_list_id} AND completed = 0'</tt>
def acts_as_list(options = {})
ActiveSupport::Deprecation.warn "The acts_as_list plugin will be removed from Redmine 4 core, use the acts_as_list gem or similar implementation instead."
configuration = { :column => "position", :scope => "1 = 1" }
configuration.update(options) if options.is_a?(Hash)
configuration[:scope] = "#{configuration[:scope]}_id".intern if configuration[:scope].is_a?(Symbol) && configuration[:scope].to_s !~ /_id$/
if configuration[:scope].is_a?(Symbol)
scope_condition_method = %(
def scope_condition
if #{configuration[:scope].to_s}.nil?
"#{configuration[:scope].to_s} IS NULL"
else
"#{configuration[:scope].to_s} = \#{#{configuration[:scope].to_s}}"
end
end
)
else
scope_condition_method = "def scope_condition() \"#{configuration[:scope]}\" end"
end
class_eval <<-EOV
include ActiveRecord::Acts::List::InstanceMethods
def acts_as_list_class
::#{self.name}
end
def position_column
'#{configuration[:column]}'
end
#{scope_condition_method}
before_destroy :remove_from_list
before_create :add_to_list_bottom
EOV
end
end
# All the methods available to a record that has had <tt>acts_as_list</tt> specified. Each method works
# by assuming the object to be the item in the list, so <tt>chapter.move_lower</tt> would move that chapter
# lower in the list of all chapters. Likewise, <tt>chapter.first?</tt> would return +true+ if that chapter is
# the first in the list of all chapters.
module InstanceMethods
# Insert the item at the given position (defaults to the top position of 1).
def insert_at(position = 1)
insert_at_position(position)
end
# Swap positions with the next lower item, if one exists.
def move_lower
return unless lower_item
acts_as_list_class.transaction do
lower_item.decrement_position
increment_position
end
end
# Swap positions with the next higher item, if one exists.
def move_higher
return unless higher_item
acts_as_list_class.transaction do
higher_item.increment_position
decrement_position
end
end
# Move to the bottom of the list. If the item is already in the list, the items below it have their
# position adjusted accordingly.
def move_to_bottom
return unless in_list?
acts_as_list_class.transaction do
decrement_positions_on_lower_items
assume_bottom_position
end
end
# Move to the top of the list. If the item is already in the list, the items above it have their
# position adjusted accordingly.
def move_to_top
return unless in_list?
acts_as_list_class.transaction do
increment_positions_on_higher_items
assume_top_position
end
end
# Move to the given position
def move_to=(pos)
case pos.to_s
when 'highest'
move_to_top
when 'higher'
move_higher
when 'lower'
move_lower
when 'lowest'
move_to_bottom
end
reset_positions_in_list
end
def reset_positions_in_list
acts_as_list_class.where(scope_condition).reorder("#{position_column} ASC, id ASC").each_with_index do |item, i|
unless item.send(position_column) == (i + 1)
acts_as_list_class.where({:id => item.id}).
update_all({position_column => (i + 1)})
end
end
end
# Removes the item from the list.
def remove_from_list
if in_list?
decrement_positions_on_lower_items
update_attribute position_column, nil
end
end
# Increase the position of this item without adjusting the rest of the list.
def increment_position
return unless in_list?
update_attribute position_column, self.send(position_column).to_i + 1
end
# Decrease the position of this item without adjusting the rest of the list.
def decrement_position
return unless in_list?
update_attribute position_column, self.send(position_column).to_i - 1
end
# Return +true+ if this object is the first in the list.
def first?
return false unless in_list?
self.send(position_column) == 1
end
# Return +true+ if this object is the last in the list.
def last?
return false unless in_list?
self.send(position_column) == bottom_position_in_list
end
# Return the next higher item in the list.
def higher_item
return nil unless in_list?
acts_as_list_class.where(
"#{scope_condition} AND #{position_column} = #{(send(position_column).to_i - 1).to_s}"
).first
end
# Return the next lower item in the list.
def lower_item
return nil unless in_list?
acts_as_list_class.where(
"#{scope_condition} AND #{position_column} = #{(send(position_column).to_i + 1).to_s}"
).first
end
# Test if this record is in a list
def in_list?
!send(position_column).nil?
end
private
def add_to_list_top
increment_positions_on_all_items
end
def add_to_list_bottom
self[position_column] = bottom_position_in_list.to_i + 1
end
# Overwrite this method to define the scope of the list changes
def scope_condition() "1" end
# Returns the bottom position number in the list.
# bottom_position_in_list # => 2
def bottom_position_in_list(except = nil)
item = bottom_item(except)
item ? item.send(position_column) : 0
end
# Returns the bottom item
def bottom_item(except = nil)
conditions = scope_condition
conditions = "#{conditions} AND #{self.class.primary_key} != #{except.id}" if except
acts_as_list_class.where(conditions).reorder("#{position_column} DESC").first
end
# Forces item to assume the bottom position in the list.
def assume_bottom_position
update_attribute(position_column, bottom_position_in_list(self).to_i + 1)
end
# Forces item to assume the top position in the list.
def assume_top_position
update_attribute(position_column, 1)
end
# This has the effect of moving all the higher items up one.
def decrement_positions_on_higher_items(position)
acts_as_list_class.
where("#{scope_condition} AND #{position_column} <= #{position}").
update_all("#{position_column} = (#{position_column} - 1)")
end
# This has the effect of moving all the lower items up one.
def decrement_positions_on_lower_items
return unless in_list?
acts_as_list_class.
where("#{scope_condition} AND #{position_column} > #{send(position_column).to_i}").
update_all("#{position_column} = (#{position_column} - 1)")
end
# This has the effect of moving all the higher items down one.
def increment_positions_on_higher_items
return unless in_list?
acts_as_list_class.
where("#{scope_condition} AND #{position_column} < #{send(position_column).to_i}").
update_all("#{position_column} = (#{position_column} + 1)")
end
# This has the effect of moving all the lower items down one.
def increment_positions_on_lower_items(position)
acts_as_list_class.
where("#{scope_condition} AND #{position_column} >= #{position}").
update_all("#{position_column} = (#{position_column} + 1)")
end
# Increments position (<tt>position_column</tt>) of all items in the list.
def increment_positions_on_all_items
acts_as_list_class.
where("#{scope_condition}").
update_all("#{position_column} = (#{position_column} + 1)")
end
def insert_at_position(position)
remove_from_list
increment_positions_on_lower_items(position)
self.update_attribute(position_column, position)
end
end
end
end
end

332
lib/plugins/acts_as_list/test/list_test.rb
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require 'test/unit'
require 'rubygems'
gem 'activerecord', '>= 1.15.4.7794'
require 'active_record'
require "#{File.dirname(__FILE__)}/../init"
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :dbfile => ":memory:")
def setup_db
ActiveRecord::Schema.define(:version => 1) do
create_table :mixins do |t|
t.column :pos, :integer
t.column :parent_id, :integer
t.column :created_at, :datetime
t.column :updated_at, :datetime
end
end
end
def teardown_db
ActiveRecord::Base.connection.tables.each do |table|
ActiveRecord::Base.connection.drop_table(table)
end
end
class Mixin < ActiveRecord::Base
end
class ListMixin < Mixin
acts_as_list :column => "pos", :scope => :parent
def self.table_name() "mixins" end
end
class ListMixinSub1 < ListMixin
end
class ListMixinSub2 < ListMixin
end
class ListWithStringScopeMixin < ActiveRecord::Base
acts_as_list :column => "pos", :scope => 'parent_id = #{parent_id}'
def self.table_name() "mixins" end
end
class ListTest < Test::Unit::TestCase
def setup
setup_db
(1..4).each { |counter| ListMixin.create! :pos => counter, :parent_id => 5 }
end
def teardown
teardown_db
end
def test_reordering
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(2).move_lower
assert_equal [1, 3, 2, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(2).move_higher
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(1).move_to_bottom
assert_equal [2, 3, 4, 1], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(1).move_to_top
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(2).move_to_bottom
assert_equal [1, 3, 4, 2], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(4).move_to_top
assert_equal [4, 1, 3, 2], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
end
def test_move_to_bottom_with_next_to_last_item
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(3).move_to_bottom
assert_equal [1, 2, 4, 3], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
end
def test_next_prev
assert_equal ListMixin.find(2), ListMixin.find(1).lower_item
assert_nil ListMixin.find(1).higher_item
assert_equal ListMixin.find(3), ListMixin.find(4).higher_item
assert_nil ListMixin.find(4).lower_item
end
def test_injection
item = ListMixin.new(:parent_id => 1)
assert_equal "parent_id = 1", item.scope_condition
assert_equal "pos", item.position_column
end
def test_insert
new = ListMixin.create(:parent_id => 20)
assert_equal 1, new.pos
assert new.first?
assert new.last?
new = ListMixin.create(:parent_id => 20)
assert_equal 2, new.pos
assert !new.first?
assert new.last?
new = ListMixin.create(:parent_id => 20)
assert_equal 3, new.pos
assert !new.first?
assert new.last?
new = ListMixin.create(:parent_id => 0)
assert_equal 1, new.pos
assert new.first?
assert new.last?
end
def test_insert_at
new = ListMixin.create(:parent_id => 20)
assert_equal 1, new.pos
new = ListMixin.create(:parent_id => 20)
assert_equal 2, new.pos
new = ListMixin.create(:parent_id => 20)
assert_equal 3, new.pos
new4 = ListMixin.create(:parent_id => 20)
assert_equal 4, new4.pos
new4.insert_at(3)
assert_equal 3, new4.pos
new.reload
assert_equal 4, new.pos
new.insert_at(2)
assert_equal 2, new.pos
new4.reload
assert_equal 4, new4.pos
new5 = ListMixin.create(:parent_id => 20)
assert_equal 5, new5.pos
new5.insert_at(1)
assert_equal 1, new5.pos
new4.reload
assert_equal 5, new4.pos
end
def test_delete_middle
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(2).destroy
assert_equal [1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
assert_equal 1, ListMixin.find(1).pos
assert_equal 2, ListMixin.find(3).pos
assert_equal 3, ListMixin.find(4).pos
ListMixin.find(1).destroy
assert_equal [3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
assert_equal 1, ListMixin.find(3).pos
assert_equal 2, ListMixin.find(4).pos
end
def test_with_string_based_scope
new = ListWithStringScopeMixin.create(:parent_id => 500)
assert_equal 1, new.pos
assert new.first?
assert new.last?
end
def test_nil_scope
new1, new2, new3 = ListMixin.create, ListMixin.create, ListMixin.create
new2.move_higher
assert_equal [new2, new1, new3], ListMixin.find(:all, :conditions => 'parent_id IS NULL', :order => 'pos')
end
def test_remove_from_list_should_then_fail_in_list?
assert_equal true, ListMixin.find(1).in_list?
ListMixin.find(1).remove_from_list
assert_equal false, ListMixin.find(1).in_list?
end
def test_remove_from_list_should_set_position_to_nil
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(2).remove_from_list
assert_equal [2, 1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
assert_equal 1, ListMixin.find(1).pos
assert_equal nil, ListMixin.find(2).pos
assert_equal 2, ListMixin.find(3).pos
assert_equal 3, ListMixin.find(4).pos
end
def test_remove_before_destroy_does_not_shift_lower_items_twice
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
ListMixin.find(2).remove_from_list
ListMixin.find(2).destroy
assert_equal [1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
assert_equal 1, ListMixin.find(1).pos
assert_equal 2, ListMixin.find(3).pos
assert_equal 3, ListMixin.find(4).pos
end
end
class ListSubTest < Test::Unit::TestCase
def setup
setup_db
(1..4).each { |i| ((i % 2 == 1) ? ListMixinSub1 : ListMixinSub2).create! :pos => i, :parent_id => 5000 }
end
def teardown
teardown_db
end
def test_reordering
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(2).move_lower
assert_equal [1, 3, 2, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(2).move_higher
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(1).move_to_bottom
assert_equal [2, 3, 4, 1], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(1).move_to_top
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(2).move_to_bottom
assert_equal [1, 3, 4, 2], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(4).move_to_top
assert_equal [4, 1, 3, 2], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
end
def test_move_to_bottom_with_next_to_last_item
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(3).move_to_bottom
assert_equal [1, 2, 4, 3], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
end
def test_next_prev
assert_equal ListMixin.find(2), ListMixin.find(1).lower_item
assert_nil ListMixin.find(1).higher_item
assert_equal ListMixin.find(3), ListMixin.find(4).higher_item
assert_nil ListMixin.find(4).lower_item
end
def test_injection
item = ListMixin.new("parent_id"=>1)
assert_equal "parent_id = 1", item.scope_condition
assert_equal "pos", item.position_column
end
def test_insert_at
new = ListMixin.create("parent_id" => 20)
assert_equal 1, new.pos
new = ListMixinSub1.create("parent_id" => 20)
assert_equal 2, new.pos
new = ListMixinSub2.create("parent_id" => 20)
assert_equal 3, new.pos
new4 = ListMixin.create("parent_id" => 20)
assert_equal 4, new4.pos
new4.insert_at(3)
assert_equal 3, new4.pos
new.reload
assert_equal 4, new.pos
new.insert_at(2)
assert_equal 2, new.pos
new4.reload
assert_equal 4, new4.pos
new5 = ListMixinSub1.create("parent_id" => 20)
assert_equal 5, new5.pos
new5.insert_at(1)
assert_equal 1, new5.pos
new4.reload
assert_equal 5, new4.pos
end
def test_delete_middle
assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
ListMixin.find(2).destroy
assert_equal [1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
assert_equal 1, ListMixin.find(1).pos
assert_equal 2, ListMixin.find(3).pos
assert_equal 3, ListMixin.find(4).pos
ListMixin.find(1).destroy
assert_equal [3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5000', :order => 'pos').map(&:id)
assert_equal 1, ListMixin.find(3).pos
assert_equal 2, ListMixin.find(4).pos
end
end