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# frozen_string_literal: true
# Redmine - project management software
# Copyright (C) 2006-2023 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 'redmine/string_array_diff/diff'
class WikiPage < ActiveRecord::Base
include Redmine::SafeAttributes
belongs_to :wiki
has_one :content, :class_name => 'WikiContent', :foreign_key => 'page_id',
:dependent => :destroy
has_one :content_without_text, lambda {without_text.readonly},
:class_name => 'WikiContent', :foreign_key => 'page_id'
acts_as_attachable :delete_permission => :delete_wiki_pages_attachments
acts_as_tree :dependent => :nullify, :order => 'title'
acts_as_watchable
acts_as_event(
:title => proc {|o| "#{l(:label_wiki)}: #{o.title}"},
:description => :text,
:datetime => :created_on,
:url =>
proc do |o|
{:controller => 'wiki', :action => 'show',
:project_id => o.wiki.project, :id => o.title}
end
)
acts_as_searchable :columns => ['title', "#{WikiContent.table_name}.text"],
:scope => joins(:content, {:wiki => :project}),
:preload => [:content, {:wiki => :project}],
:permission => :view_wiki_pages,
:project_key => "#{Wiki.table_name}.project_id"
attr_accessor :redirect_existing_links
attr_writer :deleted_attachment_ids
validates_presence_of :title
validates_format_of :title, :with => /\A[^,\.\/\?\;\|\s]*\z/
validates_uniqueness_of :title, :scope => :wiki_id, :case_sensitive => false
validates_length_of :title, maximum: 255
validates_associated :content
validate :validate_parent_title
before_destroy :delete_redirects
before_save :handle_rename_or_move, :update_wiki_start_page
after_save :handle_children_move, :delete_selected_attachments
# eager load information about last updates, without loading text
scope :with_updated_on, lambda {preload(:content_without_text)}
# Wiki pages that are protected by default
DEFAULT_PROTECTED_PAGES = %w(sidebar)
safe_attributes 'parent_id', 'parent_title', 'title', 'redirect_existing_links', 'wiki_id',
:if => lambda {|page, user| page.new_record? || user.allowed_to?(:rename_wiki_pages, page.project)}
safe_attributes 'is_start_page',
:if => lambda {|page, user| user.allowed_to?(:manage_wiki, page.project)}
safe_attributes 'deleted_attachment_ids',
:if => lambda {|page, user| page.attachments_deletable?(user)}
def initialize(attributes=nil, *args)
super
if new_record? && DEFAULT_PROTECTED_PAGES.include?(title.to_s.downcase)
self.protected = true
end
end
def visible?(user=User.current)
!user.nil? && user.allowed_to?(:view_wiki_pages, project)
end
def title=(value)
value = Wiki.titleize(value)
write_attribute(:title, value)
end
def safe_attributes=(attrs, user=User.current)
if attrs.respond_to?(:to_unsafe_hash)
attrs = attrs.to_unsafe_hash
end
return unless attrs.is_a?(Hash)
attrs = attrs.deep_dup
# Project and Tracker must be set before since new_statuses_allowed_to depends on it.
if (w_id = attrs.delete('wiki_id')) && safe_attribute?('wiki_id')
if (w = Wiki.find_by_id(w_id)) && w.project && user.allowed_to?(:rename_wiki_pages, w.project)
self.wiki = w
end
end
super attrs, user
end
# Manages redirects if page is renamed or moved
def handle_rename_or_move
if !new_record? && (title_changed? || wiki_id_changed?)
# Update redirects that point to the old title
WikiRedirect.where(:redirects_to => title_was, :redirects_to_wiki_id => wiki_id_was).each do |r|
r.redirects_to = title
r.redirects_to_wiki_id = wiki_id
(r.title == r.redirects_to && r.wiki_id == r.redirects_to_wiki_id) ? r.destroy : r.save
end
# Remove redirects for the new title
WikiRedirect.where(:wiki_id => wiki_id, :title => title).delete_all
# Create a redirect to the new title
unless redirect_existing_links == "0"
WikiRedirect.create(
:wiki_id => wiki_id_was, :title => title_was,
:redirects_to_wiki_id => wiki_id, :redirects_to => title
)
end
end
if !new_record? && wiki_id_changed? && parent.present?
unless parent.wiki_id == wiki_id
self.parent_id = nil
end
end
end
private :handle_rename_or_move
# Moves child pages if page was moved
def handle_children_move
if !new_record? && saved_change_to_wiki_id?
children.each do |child|
child.wiki_id = wiki_id
child.redirect_existing_links = redirect_existing_links
unless child.save
WikiPage.where(:id => child.id).update_all :parent_id => nil
end
end
end
end
private :handle_children_move
# Deletes redirects to this page
def delete_redirects
WikiRedirect.where(:redirects_to_wiki_id => wiki_id, :redirects_to => title).delete_all
end
def pretty_title
WikiPage.pretty_title(title)
end
def content_for_version(version=nil)
(content && version) ? content.versions.find_by_version(version.to_i) : content
end
def diff(version_to=nil, version_from=nil)
version_to = version_to ? version_to.to_i : self.content.version
content_to = content.versions.find_by_version(version_to)
content_from = version_from ? content.versions.find_by_version(version_from.to_i) : content_to.try(:previous)
return nil unless content_to && content_from
if content_from.version > content_to.version
content_to, content_from = content_from, content_to
end
(content_to && content_from) ? WikiDiff.new(content_to, content_from) : nil
end
def annotate(version=nil)
version = version ? version.to_i : self.content.version
c = content.versions.find_by_version(version)
c ? WikiAnnotate.new(c) : nil
end
def self.pretty_title(str)
(str && str.is_a?(String)) ? str.tr('_', ' ') : str
end
def project
wiki.try(:project)
end
def text
content.text if content
end
def updated_on
content_attribute(:updated_on)
end
def version
content_attribute(:version)
end
# Returns true if usr is allowed to edit the page, otherwise false
def editable_by?(usr)
!protected? || usr.allowed_to?(:protect_wiki_pages, wiki.project)
end
def attachments_deletable?(usr=User.current)
editable_by?(usr) && super(usr)
end
def parent_title
@parent_title || (self.parent && self.parent.pretty_title)
end
def parent_title=(t)
@parent_title = t
parent_page = t.blank? ? nil : self.wiki.find_page(t)
self.parent = parent_page
end
def is_start_page
if @is_start_page.nil?
@is_start_page = wiki.try(:start_page) == title_was
end
@is_start_page
end
def is_start_page=(arg)
@is_start_page = arg == '1' || arg == true
end
def update_wiki_start_page
if is_start_page
wiki.update_attribute :start_page, title
end
end
private :update_wiki_start_page
# Saves the page and its content if text was changed
# Return true if the page was saved
def save_with_content(content)
ret = nil
transaction do
ret = save
if content.text_changed?
begin
self.content = content
rescue ActiveRecord::RecordNotSaved
ret = false
end
end
raise ActiveRecord::Rollback unless ret
end
ret
end
def deleted_attachment_ids
Array(@deleted_attachment_ids).map(&:to_i)
end
def delete_selected_attachments
if deleted_attachment_ids.present?
objects = attachments.where(:id => deleted_attachment_ids.map(&:to_i))
attachments.delete(objects)
end
end
protected
def validate_parent_title
errors.add(:parent_title, :invalid) if !@parent_title.blank? && parent.nil?
errors.add(:parent_title, :circular_dependency) if parent && (parent == self || parent.ancestors.include?(self))
if parent_id_changed? && parent && (parent.wiki_id != wiki_id)
errors.add(:parent_title, :not_same_project)
end
end
private
def content_attribute(name)
(association(:content).loaded? ? content : content_without_text).try(name)
end
end
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