Redmine/app/controllers/wiki_controller.rb

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# Redmine - project management software
# Copyright (C) 2006-2012 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 'diff'
# The WikiController follows the Rails REST controller pattern but with
# a few differences
#
# * index - shows a list of WikiPages grouped by page or date
# * new - not used
# * create - not used
# * show - will also show the form for creating a new wiki page
# * edit - used to edit an existing or new page
# * update - used to save a wiki page update to the database, including new pages
# * destroy - normal
#
# Other member and collection methods are also used
#
# TODO: still being worked on
class WikiController < ApplicationController
default_search_scope :wiki_pages
before_filter :find_wiki, :authorize
before_filter :find_existing_or_new_page, :only => [:show, :edit, :update]
before_filter :find_existing_page, :only => [:rename, :protect, :history, :diff, :annotate, :add_attachment, :destroy, :destroy_version]
accept_api_auth :index, :show, :update, :destroy
before_filter :find_attachments, :only => [:preview]
helper :attachments
include AttachmentsHelper
helper :watchers
include Redmine::Export::PDF
# List of pages, sorted alphabetically and by parent (hierarchy)
def index
load_pages_for_index
respond_to do |format|
format.html {
@pages_by_parent_id = @pages.group_by(&:parent_id)
}
format.api
end
end
# List of page, by last update
def date_index
load_pages_for_index
@pages_by_date = @pages.group_by {|p| p.updated_on.to_date}
end
# display a page (in editing mode if it doesn't exist)
def show
if @page.new_record?
if User.current.allowed_to?(:edit_wiki_pages, @project) && editable? && !api_request?
edit
render :action => 'edit'
else
render_404
end
return
end
if params[:version] && !User.current.allowed_to?(:view_wiki_edits, @project)
deny_access
return
end
@content = @page.content_for_version(params[:version])
if User.current.allowed_to?(:export_wiki_pages, @project)
if params[:format] == 'pdf'
send_data(wiki_page_to_pdf(@page, @project), :type => 'application/pdf', :filename => "#{@page.title}.pdf")
return
elsif params[:format] == 'html'
export = render_to_string :action => 'export', :layout => false
send_data(export, :type => 'text/html', :filename => "#{@page.title}.html")
return
elsif params[:format] == 'txt'
send_data(@content.text, :type => 'text/plain', :filename => "#{@page.title}.txt")
return
end
end
@editable = editable?
@sections_editable = @editable && User.current.allowed_to?(:edit_wiki_pages, @page.project) &&
@content.current_version? &&
Redmine::WikiFormatting.supports_section_edit?
respond_to do |format|
format.html
format.api
end
end
# edit an existing page or a new one
def edit
return render_403 unless editable?
if @page.new_record?
@page.content = WikiContent.new(:page => @page)
if params[:parent].present?
@page.parent = @page.wiki.find_page(params[:parent].to_s)
end
end
@content = @page.content_for_version(params[:version])
@content.text = initial_page_content(@page) if @content.text.blank?
# don't keep previous comment
@content.comments = nil
# To prevent StaleObjectError exception when reverting to a previous version
@content.version = @page.content.version
@text = @content.text
if params[:section].present? && Redmine::WikiFormatting.supports_section_edit?
@section = params[:section].to_i
@text, @section_hash = Redmine::WikiFormatting.formatter.new(@text).get_section(@section)
render_404 if @text.blank?
end
end
# Creates a new page or updates an existing one
def update
return render_403 unless editable?
was_new_page = @page.new_record?
@page.content = WikiContent.new(:page => @page) if @page.new_record?
@page.safe_attributes = params[:wiki_page]
@content = @page.content
content_params = params[:content]
if content_params.nil? && params[:wiki_page].is_a?(Hash)
content_params = params[:wiki_page].slice(:text, :comments, :version)
end
content_params ||= {}
@content.comments = content_params[:comments]
@text = content_params[:text]
if params[:section].present? && Redmine::WikiFormatting.supports_section_edit?
@section = params[:section].to_i
@section_hash = params[:section_hash]
@content.text = Redmine::WikiFormatting.formatter.new(@content.text).update_section(params[:section].to_i, @text, @section_hash)
else
@content.version = content_params[:version] if content_params[:version]
@content.text = @text
end
@content.author = User.current
if @page.save_with_content
attachments = Attachment.attach_files(@page, params[:attachments])
render_attachment_warning_if_needed(@page)
call_hook(:controller_wiki_edit_after_save, { :params => params, :page => @page})
respond_to do |format|
format.html { redirect_to project_wiki_page_path(@project, @page.title) }
format.api {
if was_new_page
render :action => 'show', :status => :created, :location => project_wiki_page_path(@project, @page.title)
else
render_api_ok
end
}
end
else
respond_to do |format|
format.html { render :action => 'edit' }
format.api { render_validation_errors(@content) }
end
end
rescue ActiveRecord::StaleObjectError, Redmine::WikiFormatting::StaleSectionError
# Optimistic locking exception
respond_to do |format|
format.html {
flash.now[:error] = l(:notice_locking_conflict)
render :action => 'edit'
}
format.api { render_api_head :conflict }
end
rescue ActiveRecord::RecordNotSaved
respond_to do |format|
format.html { render :action => 'edit' }
format.api { render_validation_errors(@content) }
end
end
# rename a page
def rename
return render_403 unless editable?
@page.redirect_existing_links = true
# used to display the *original* title if some AR validation errors occur
@original_title = @page.pretty_title
if request.post? && @page.update_attributes(params[:wiki_page])
flash[:notice] = l(:notice_successful_update)
redirect_to project_wiki_page_path(@project, @page.title)
end
end
def protect
@page.update_attribute :protected, params[:protected]
redirect_to project_wiki_page_path(@project, @page.title)
end
# show page history
def history
@version_count = @page.content.versions.count
@version_pages = Paginator.new self, @version_count, per_page_option, params['page']
# don't load text
@versions = @page.content.versions.
select("id, author_id, comments, updated_on, version").
reorder('version DESC').
limit(@version_pages.items_per_page + 1).
offset(@version_pages.current.offset).
all
render :layout => false if request.xhr?
end
def diff
@diff = @page.diff(params[:version], params[:version_from])
render_404 unless @diff
end
def annotate
@annotate = @page.annotate(params[:version])
render_404 unless @annotate
end
# Removes a wiki page and its history
# Children can be either set as root pages, removed or reassigned to another parent page
def destroy
return render_403 unless editable?
@descendants_count = @page.descendants.size
if @descendants_count > 0
case params[:todo]
when 'nullify'
# Nothing to do
when 'destroy'
# Removes all its descendants
@page.descendants.each(&:destroy)
when 'reassign'
# Reassign children to another parent page
reassign_to = @wiki.pages.find_by_id(params[:reassign_to_id].to_i)
return unless reassign_to
@page.children.each do |child|
child.update_attribute(:parent, reassign_to)
end
else
@reassignable_to = @wiki.pages - @page.self_and_descendants
# display the destroy form if it's a user request
return unless api_request?
end
end
@page.destroy
respond_to do |format|
format.html { redirect_to project_wiki_index_path(@project) }
format.api { render_api_ok }
end
end
def destroy_version
return render_403 unless editable?
@content = @page.content_for_version(params[:version])
@content.destroy
redirect_to_referer_or history_project_wiki_page_path(@project, @page.title)
end
# Export wiki to a single pdf or html file
def export
@pages = @wiki.pages.all(:order => 'title', :include => [:content, {:attachments => :author}])
respond_to do |format|
format.html {
export = render_to_string :action => 'export_multiple', :layout => false
send_data(export, :type => 'text/html', :filename => "wiki.html")
}
format.pdf {
send_data(wiki_pages_to_pdf(@pages, @project), :type => 'application/pdf', :filename => "#{@project.identifier}.pdf")
}
end
end
def preview
page = @wiki.find_page(params[:id])
# page is nil when previewing a new page
return render_403 unless page.nil? || editable?(page)
if page
@attachments += page.attachments
@previewed = page.content
end
@text = params[:content][:text]
render :partial => 'common/preview'
end
def add_attachment
return render_403 unless editable?
attachments = Attachment.attach_files(@page, params[:attachments])
render_attachment_warning_if_needed(@page)
redirect_to :action => 'show', :id => @page.title, :project_id => @project
end
private
def find_wiki
@project = Project.find(params[:project_id])
@wiki = @project.wiki
render_404 unless @wiki
rescue ActiveRecord::RecordNotFound
render_404
end
# Finds the requested page or a new page if it doesn't exist
def find_existing_or_new_page
@page = @wiki.find_or_new_page(params[:id])
if @wiki.page_found_with_redirect?
redirect_to params.update(:id => @page.title)
end
end
# Finds the requested page and returns a 404 error if it doesn't exist
def find_existing_page
@page = @wiki.find_page(params[:id])
if @page.nil?
render_404
return
end
if @wiki.page_found_with_redirect?
redirect_to params.update(:id => @page.title)
end
end
# Returns true if the current user is allowed to edit the page, otherwise false
def editable?(page = @page)
page.editable_by?(User.current)
end
# Returns the default content of a new wiki page
def initial_page_content(page)
helper = Redmine::WikiFormatting.helper_for(Setting.text_formatting)
extend helper unless self.instance_of?(helper)
helper.instance_method(:initial_page_content).bind(self).call(page)
end
def load_pages_for_index
@pages = @wiki.pages.with_updated_on.reorder("#{WikiPage.table_name}.title").includes(:wiki => :project).includes(:parent).all
end
end