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 visible? operators
24 return false unless super
25 self.owner_model.visible? operators
33 'story_sheets.updated_at desc'
36 def self.play_sheet_where sid
37 ['story_sheets.story_id = ?', sid]
40 def self.page prm = nil
45 def self.play_sheet story, operators, page = 1
46 ss = StorySheet.where(self.play_sheet_where(story.id)).includes(StorySheet.list_opt).order('story_sheets.t').offset(page -1).limit(1).first
49 Sheet.show(ss.sheet.id, operators)
58 def self.play_paginate story, page
59 Kaminari.paginate_array(Array.new(StorySheet.where(self.play_sheet_where(story.id)).includes(StorySheet.list_opt).count, nil)).page(page).per(1)
73 def self.list_json_opt
77 :sheet => {:include => {:author => {}}}
91 def self.show_json_opt
95 :sheet => {:include => {:author => {}}}
103 def story_sheet_as_json au
104 panel_include = if self.panel and self.panel.visible?(au)
105 {:include => {:author => {}}, :methods => :elements}
107 {:include => {:author => {}}}
109 self.to_json({:include => {:scroll => {:include => {:author => {}}}, :author => {}, :panel => panel_include}})
112 def self.list_as_json_text ary, au
113 '[' + ary.map {|i| i.story_sheet_as_json(au) }.join(',') + ']'
116 def self.new_t story_id
117 r = StorySheet.max_t(story_id)
118 r.blank? ? 0 : r.to_i + 1
121 def self.top_sheet story, author
122 StorySheet.play_list(story, author).first
125 def self.max_t story_id
126 StorySheet.maximum(:t, :conditions => ['story_id = ?', story_id])
129 def self.find_t story_id, t
130 StorySheet.find(:first, :conditions => ['story_id = ? and t = ?', story_id, t])
133 def self.collect_t story_sheet
134 r = StorySheet.find(:all, :conditions => ['story_id = ?', story_sheet.story_id], :order => 't')
140 ary.compact.sort.each do |t|
141 break false unless t == i
144 ary.compact.size == i
147 def self.validate_t story_sheet
148 StorySheet.serial?(StorySheet.collect_t(story_sheet))
152 StorySheet.update_all('t = t + 1', ['story_id = ? and t >= ?', self.story_id, self.t])
155 def lesser_shift old_t
156 self.t = 0 if self.t < 0
157 StorySheet.update_all('t = t + 1', ['story_id = ? and (t >= ? and t < ?)', self.story_id, self.t, old_t])
160 def higher_shift old_t
161 nf = StorySheet.find_t(self.story_id, self.t)
162 max_t = StorySheet.max_t(self.story_id).to_i
163 self.t = max_t if self.t > max_t
164 StorySheet.update_all('t = t - 1', ['story_id = ? and (t > ? and t <= ?)', self.story_id, old_t, self.t])
167 def update_shift old_t
175 def rotate old_t = nil
178 self.t = StorySheet.new_t self.story_id
185 self.update_shift old_t
191 return nil if self.story_id == nil or self.sheet_id == nil
192 self.story.own?(operators) and self.sheet.usable?(operators)
195 def store operators, old_t = nil
197 StorySheet.transaction do
198 case self.allow? operators
202 raise ActiveRecord::Forbidden
206 raise ActiveRecord::Rollback unless res
207 res = StorySheet.validate_t(self)
209 self.errors.add :t, 'unserialized'
210 raise ActiveRecord::Rollback
216 def destroy_and_shorten
218 StorySheet.transaction do
219 StorySheet.update_all('t = t - 1', ['story_id = ? and (t > ?)', self.story_id, self.t])
220 raise ActiveRecord::Rollback unless self.destroy