1 class StorySheet < Peta::Leaf
7 validates :story_id, :presence => true, :numericality => true, :existence => {:both => false}
8 validates :sheet_id, :presence => true, :numericality => true, :existence => {:both => false}
9 validates :author_id, :presence => true, :numericality => true, :existence => {:both => false}
10 validates :t, :presence => true, :numericality => {:greater_than_or_equal_to => 0}
18 def overwrite operators
19 return false unless operators.author
20 self.author_id = operators.author.id
23 def self.public_list_where
28 'story_sheets.updated_at desc'
31 def self.play_sheet_where sid
32 ['story_sheets.story_id = ?', sid]
35 def self.page prm = nil
40 def self.play_sheet story, operators, page = 1
41 ss = StorySheet.where(self.play_sheet_where(story.id)).includes(StorySheet.list_opt).order('story_sheets.t').offset(page -1).limit(1).first
44 Sheet.show(ss.sheet.id, operators)
53 def self.play_paginate story, page
54 Kaminari.paginate_array(Array.new(StorySheet.where(self.play_sheet_where(story.id)).includes(StorySheet.list_opt).count, nil)).page(page).per(1)
57 def self.by_author_list_includes
78 def self.list_json_opt
82 :sheet => {:include => {:author => {}}}
96 def self.show_json_opt
100 :sheet => {:include => {:author => {}}}
108 def story_sheet_as_json au
109 panel_include = if self.panel and self.panel.visible?(au)
110 {:include => {:author => {}}, :methods => :elements}
112 {:include => {:author => {}}}
114 self.to_json({:include => {:scroll => {:include => {:author => {}}}, :author => {}, :panel => panel_include}})
117 def self.list_as_json_text ary, au
118 '[' + ary.map {|i| i.story_sheet_as_json(au) }.join(',') + ']'
121 def self.new_t story_id
122 r = StorySheet.max_t(story_id)
123 r.blank? ? 0 : r.to_i + 1
126 def self.top_sheet story, author
127 StorySheet.play_list(story, author).first
130 def self.max_t story_id
131 StorySheet.maximum(:t, :conditions => ['story_id = ?', story_id])
134 def self.find_t story_id, t
135 StorySheet.find(:first, :conditions => ['story_id = ? and t = ?', story_id, t])
138 def self.collect_t story_sheet
139 r = StorySheet.find(:all, :conditions => ['story_id = ?', story_sheet.story_id], :order => 't')
145 ary.compact.sort.each do |t|
146 break false unless t == i
149 ary.compact.size == i
152 def self.validate_t story_sheet
153 StorySheet.serial?(StorySheet.collect_t(story_sheet))
157 StorySheet.update_all('t = t + 1', ['story_id = ? and t >= ?', self.story_id, self.t])
160 def lesser_shift old_t
161 self.t = 0 if self.t < 0
162 StorySheet.update_all('t = t + 1', ['story_id = ? and (t >= ? and t < ?)', self.story_id, self.t, old_t])
165 def higher_shift old_t
166 nf = StorySheet.find_t(self.story_id, self.t)
167 max_t = StorySheet.max_t(self.story_id).to_i
168 self.t = max_t if self.t > max_t
169 StorySheet.update_all('t = t - 1', ['story_id = ? and (t > ? and t <= ?)', self.story_id, old_t, self.t])
172 def update_shift old_t
180 def rotate old_t = nil
183 self.t = StorySheet.new_t self.story_id
190 self.update_shift old_t
196 return nil if self.story_id == nil or self.sheet_id == nil
197 self.story.own?(operators) and self.sheet.usable?(operators)
200 def store operators, old_t = nil
202 StorySheet.transaction do
203 case self.allow? operators
207 raise ActiveRecord::Forbidden
211 raise ActiveRecord::Rollback unless res
212 res = StorySheet.validate_t(self)
214 self.errors.add :t, 'unserialized'
215 raise ActiveRecord::Rollback
221 def destroy_and_shorten
223 StorySheet.transaction do
224 StorySheet.update_all('t = t - 1', ['story_id = ? and (t > ?)', self.story_id, self.t])
225 raise ActiveRecord::Rollback unless self.destroy