Redmine 3.4.4

app/models/wiki_content.rb

@@ -0,0 +1,174 @@
+# Redmine - project management software
+# Copyright (C) 2006-2017  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 WikiContent < ActiveRecord::Base
+  self.locking_column = 'version'
+  belongs_to :page, :class_name => 'WikiPage'
+  belongs_to :author, :class_name => 'User'
+  validates_presence_of :text
+  validates_length_of :comments, :maximum => 1024, :allow_nil => true
+  attr_protected :id
+
+  acts_as_versioned
+
+  after_save :send_notification
+
+  scope :without_text, lambda {select(:id, :page_id, :version, :updated_on)}
+
+  def visible?(user=User.current)
+    page.visible?(user)
+  end
+
+  def project
+    page.project
+  end
+
+  def attachments
+    page.nil? ? [] : page.attachments
+  end
+
+  def notified_users
+    project.notified_users.reject {|user| !visible?(user)}
+  end
+
+  # Returns the mail addresses of users that should be notified
+  def recipients
+    notified_users.collect(&:mail)
+  end
+
+  # Return true if the content is the current page content
+  def current_version?
+    true
+  end
+
+  class Version
+    belongs_to :page, :class_name => '::WikiPage'
+    belongs_to :author, :class_name => '::User'
+    attr_protected :data
+
+    acts_as_event :title => Proc.new {|o| "#{l(:label_wiki_edit)}: #{o.page.title} (##{o.version})"},
+                  :description => :comments,
+                  :datetime => :updated_on,
+                  :type => 'wiki-page',
+                  :group => :page,
+                  :url => Proc.new {|o| {:controller => 'wiki', :action => 'show', :project_id => o.page.wiki.project, :id => o.page.title, :version => o.version}}
+
+    acts_as_activity_provider :type => 'wiki_edits',
+                              :timestamp => "#{WikiContent.versioned_table_name}.updated_on",
+                              :author_key => "#{WikiContent.versioned_table_name}.author_id",
+                              :permission => :view_wiki_edits,
+                              :scope => select("#{WikiContent.versioned_table_name}.updated_on, #{WikiContent.versioned_table_name}.comments, " +
+                                               "#{WikiContent.versioned_table_name}.#{WikiContent.version_column}, #{WikiPage.table_name}.title, " +
+                                               "#{WikiContent.versioned_table_name}.page_id, #{WikiContent.versioned_table_name}.author_id, " +
+                                               "#{WikiContent.versioned_table_name}.id").
+                                        joins("LEFT JOIN #{WikiPage.table_name} ON #{WikiPage.table_name}.id = #{WikiContent.versioned_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")
+
+    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 ||= WikiContent::Version.
+        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 ||= WikiContent::Version.
+        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("#{self.class.table_name}.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
+
+  private
+
+  def send_notification
+    # new_record? returns false in after_save callbacks
+    if id_changed?
+      if Setting.notified_events.include?('wiki_content_added')
+        Mailer.wiki_content_added(self).deliver
+      end
+    elsif text_changed?
+      if Setting.notified_events.include?('wiki_content_updated')
+        Mailer.wiki_content_updated(self).deliver
+      end
+    end
+  end
+end