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- # frozen_string_literal: true
-
- # Redmine - project management software
- # Copyright (C) 2006-2021 Jean-Philippe Lang
- #
- # This program is free software; you can redistribute it and/or
- # modify it under the terms of the GNU General Public License
- # as published by the Free Software Foundation; either version 2
- # of the License, or (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-
- require 'zlib'
-
- class WikiContentVersion < ActiveRecord::Base
- belongs_to :page, :class_name => 'WikiPage'
- belongs_to :author, :class_name => 'User'
-
- acts_as_event(
- :title =>
- Proc.new do |o|
- "#{l(:label_wiki_edit)}: #{o.page.title} (##{o.version})"
- end,
- :description => :comments,
- :datetime => :updated_on,
- :type => 'wiki-page',
- :group => :page,
- :url =>
- Proc.new do |o|
- {:controller => 'wiki', :action => 'show',
- :project_id => o.page.wiki.project,
- :id => o.page.title, :version => o.version}
- end
- )
- acts_as_activity_provider(
- :type => 'wiki_edits',
- :timestamp => "#{table_name}.updated_on",
- :author_key => "#{table_name}.author_id",
- :permission => :view_wiki_edits,
- :scope =>
- proc do
- select("#{table_name}.updated_on, #{table_name}.comments, " \
- "#{table_name}.version, #{WikiPage.table_name}.title, " \
- "#{table_name}.page_id, #{table_name}.author_id, " \
- "#{table_name}.id").
- joins("LEFT JOIN #{WikiPage.table_name} ON #{WikiPage.table_name}.id = #{table_name}.page_id " \
- "LEFT JOIN #{Wiki.table_name} ON #{Wiki.table_name}.id = #{WikiPage.table_name}.wiki_id " \
- "LEFT JOIN #{Project.table_name} ON #{Project.table_name}.id = #{Wiki.table_name}.project_id")
- end
- )
- after_destroy :page_update_after_destroy
-
- def text=(plain)
- case Setting.wiki_compression
- when 'gzip'
- begin
- self.data = Zlib::Deflate.deflate(plain, Zlib::BEST_COMPRESSION)
- self.compression = 'gzip'
- rescue
- self.data = plain
- self.compression = ''
- end
- else
- self.data = plain
- self.compression = ''
- end
- plain
- end
-
- def text
- @text ||= begin
- str = case compression
- when 'gzip'
- Zlib::Inflate.inflate(data)
- else
- # uncompressed data
- data
- end
- str.force_encoding("UTF-8")
- str
- end
- end
-
- def project
- page.project
- end
-
- def attachments
- page.nil? ? [] : page.attachments
- end
-
- # Return true if the content is the current page content
- def current_version?
- page.content.version == self.version
- end
-
- # Returns the previous version or nil
- def previous
- @previous ||= WikiContentVersion.
- reorder(version: :desc).
- includes(:author).
- where("wiki_content_id = ? AND version < ?", wiki_content_id, version).first
- end
-
- # Returns the next version or nil
- def next
- @next ||= WikiContentVersion.
- reorder(version: :asc).
- includes(:author).
- where("wiki_content_id = ? AND version > ?", wiki_content_id, version).first
- end
-
- private
-
- # Updates page's content if the latest version is removed
- # or destroys the page if it was the only version
- def page_update_after_destroy
- latest = page.content.versions.reorder(version: :desc).first
- if latest && page.content.version != latest.version
- raise ActiveRecord::Rollback unless page.content.revert_to!(latest)
- elsif latest.nil?
- raise ActiveRecord::Rollback unless page.destroy
- end
- end
- end
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