Chris@1517: # Redmine - project management software
Chris@1517: # Copyright (C) 2006-2014  Jean-Philippe Lang
Chris@1517: #
Chris@1517: # This program is free software; you can redistribute it and/or
Chris@1517: # modify it under the terms of the GNU General Public License
Chris@1517: # as published by the Free Software Foundation; either version 2
Chris@1517: # of the License, or (at your option) any later version.
Chris@1517: #
Chris@1517: # This program is distributed in the hope that it will be useful,
Chris@1517: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@1517: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@1517: # GNU General Public License for more details.
Chris@1517: #
Chris@1517: # You should have received a copy of the GNU General Public License
Chris@1517: # along with this program; if not, write to the Free Software
Chris@1517: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@1517: 
Chris@1517: # The WikiController follows the Rails REST controller pattern but with
Chris@1517: # a few differences
Chris@1517: #
Chris@1517: # * index - shows a list of WikiPages grouped by page or date
Chris@1517: # * new - not used
Chris@1517: # * create - not used
Chris@1517: # * show - will also show the form for creating a new wiki page
Chris@1517: # * edit - used to edit an existing or new page
Chris@1517: # * update - used to save a wiki page update to the database, including new pages
Chris@1517: # * destroy - normal
Chris@1517: #
Chris@1517: # Other member and collection methods are also used
Chris@1517: #
Chris@1517: # TODO: still being worked on
Chris@1517: class WikiController < ApplicationController
Chris@1517:   default_search_scope :wiki_pages
Chris@1517:   before_filter :find_wiki, :authorize
Chris@1517:   before_filter :find_existing_or_new_page, :only => [:show, :edit, :update]
Chris@1517:   before_filter :find_existing_page, :only => [:rename, :protect, :history, :diff, :annotate, :add_attachment, :destroy, :destroy_version]
Chris@1517:   accept_api_auth :index, :show, :update, :destroy
Chris@1517:   before_filter :find_attachments, :only => [:preview]
Chris@1517: 
Chris@1517:   helper :attachments
Chris@1517:   include AttachmentsHelper
Chris@1517:   helper :watchers
Chris@1517:   include Redmine::Export::PDF
Chris@1517: 
Chris@1517:   # List of pages, sorted alphabetically and by parent (hierarchy)
Chris@1517:   def index
Chris@1517:     load_pages_for_index
Chris@1517: 
Chris@1517:     respond_to do |format|
Chris@1517:       format.html {
Chris@1517:         @pages_by_parent_id = @pages.group_by(&:parent_id)
Chris@1517:       }
Chris@1517:       format.api
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   # List of page, by last update
Chris@1517:   def date_index
Chris@1517:     load_pages_for_index
Chris@1517:     @pages_by_date = @pages.group_by {|p| p.updated_on.to_date}
Chris@1517:   end
Chris@1517: 
Chris@1517:   # display a page (in editing mode if it doesn't exist)
Chris@1517:   def show
Chris@1517:     if params[:version] && !User.current.allowed_to?(:view_wiki_edits, @project)
Chris@1517:       deny_access
Chris@1517:       return
Chris@1517:     end
Chris@1517:     @content = @page.content_for_version(params[:version])
Chris@1517:     if @content.nil?
Chris@1517:       if User.current.allowed_to?(:edit_wiki_pages, @project) && editable? && !api_request?
Chris@1517:         edit
Chris@1517:         render :action => 'edit'
Chris@1517:       else
Chris@1517:         render_404
Chris@1517:       end
Chris@1517:       return
Chris@1517:     end
Chris@1517:     if User.current.allowed_to?(:export_wiki_pages, @project)
Chris@1517:       if params[:format] == 'pdf'
Chris@1517:         send_data(wiki_page_to_pdf(@page, @project), :type => 'application/pdf', :filename => "#{@page.title}.pdf")
Chris@1517:         return
Chris@1517:       elsif params[:format] == 'html'
Chris@1517:         export = render_to_string :action => 'export', :layout => false
Chris@1517:         send_data(export, :type => 'text/html', :filename => "#{@page.title}.html")
Chris@1517:         return
Chris@1517:       elsif params[:format] == 'txt'
Chris@1517:         send_data(@content.text, :type => 'text/plain', :filename => "#{@page.title}.txt")
Chris@1517:         return
Chris@1517:       end
Chris@1517:     end
Chris@1517:     @editable = editable?
Chris@1517:     @sections_editable = @editable && User.current.allowed_to?(:edit_wiki_pages, @page.project) &&
Chris@1517:       @content.current_version? &&
Chris@1517:       Redmine::WikiFormatting.supports_section_edit?
Chris@1517: 
Chris@1517:     respond_to do |format|
Chris@1517:       format.html
Chris@1517:       format.api
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   # edit an existing page or a new one
Chris@1517:   def edit
Chris@1517:     return render_403 unless editable?
Chris@1517:     if @page.new_record?
Chris@1517:       if params[:parent].present?
Chris@1517:         @page.parent = @page.wiki.find_page(params[:parent].to_s)
Chris@1517:       end
Chris@1517:     end
Chris@1517: 
Chris@1517:     @content = @page.content_for_version(params[:version])
Chris@1517:     @content ||= WikiContent.new(:page => @page)
Chris@1517:     @content.text = initial_page_content(@page) if @content.text.blank?
Chris@1517:     # don't keep previous comment
Chris@1517:     @content.comments = nil
Chris@1517: 
Chris@1517:     # To prevent StaleObjectError exception when reverting to a previous version
Chris@1517:     @content.version = @page.content.version if @page.content
Chris@1517: 
Chris@1517:     @text = @content.text
Chris@1517:     if params[:section].present? && Redmine::WikiFormatting.supports_section_edit?
Chris@1517:       @section = params[:section].to_i
Chris@1517:       @text, @section_hash = Redmine::WikiFormatting.formatter.new(@text).get_section(@section)
Chris@1517:       render_404 if @text.blank?
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Creates a new page or updates an existing one
Chris@1517:   def update
Chris@1517:     return render_403 unless editable?
Chris@1517:     was_new_page = @page.new_record?
Chris@1517:     @page.safe_attributes = params[:wiki_page]
Chris@1517: 
Chris@1517:     @content = @page.content || WikiContent.new(:page => @page)
Chris@1517:     content_params = params[:content]
Chris@1517:     if content_params.nil? && params[:wiki_page].is_a?(Hash)
Chris@1517:       content_params = params[:wiki_page].slice(:text, :comments, :version)
Chris@1517:     end
Chris@1517:     content_params ||= {}
Chris@1517: 
Chris@1517:     @content.comments = content_params[:comments]
Chris@1517:     @text = content_params[:text]
Chris@1517:     if params[:section].present? && Redmine::WikiFormatting.supports_section_edit?
Chris@1517:       @section = params[:section].to_i
Chris@1517:       @section_hash = params[:section_hash]
Chris@1517:       @content.text = Redmine::WikiFormatting.formatter.new(@content.text).update_section(@section, @text, @section_hash)
Chris@1517:     else
Chris@1517:       @content.version = content_params[:version] if content_params[:version]
Chris@1517:       @content.text = @text
Chris@1517:     end
Chris@1517:     @content.author = User.current
Chris@1517: 
Chris@1517:     if @page.save_with_content(@content)
Chris@1517:       attachments = Attachment.attach_files(@page, params[:attachments])
Chris@1517:       render_attachment_warning_if_needed(@page)
Chris@1517:       call_hook(:controller_wiki_edit_after_save, { :params => params, :page => @page})
Chris@1517: 
Chris@1517:       respond_to do |format|
Chris@1517:         format.html {
Chris@1517:           anchor = @section ? "section-#{@section}" : nil
Chris@1517:           redirect_to project_wiki_page_path(@project, @page.title, :anchor => anchor)
Chris@1517:         }
Chris@1517:         format.api {
Chris@1517:           if was_new_page
Chris@1517:             render :action => 'show', :status => :created, :location => project_wiki_page_path(@project, @page.title)
Chris@1517:           else
Chris@1517:             render_api_ok
Chris@1517:           end
Chris@1517:         }
Chris@1517:       end
Chris@1517:     else
Chris@1517:       respond_to do |format|
Chris@1517:         format.html { render :action => 'edit' }
Chris@1517:         format.api { render_validation_errors(@content) }
Chris@1517:       end
Chris@1517:     end
Chris@1517: 
Chris@1517:   rescue ActiveRecord::StaleObjectError, Redmine::WikiFormatting::StaleSectionError
Chris@1517:     # Optimistic locking exception
Chris@1517:     respond_to do |format|
Chris@1517:       format.html {
Chris@1517:         flash.now[:error] = l(:notice_locking_conflict)
Chris@1517:         render :action => 'edit'
Chris@1517:       }
Chris@1517:       format.api { render_api_head :conflict }
Chris@1517:     end
Chris@1517:   rescue ActiveRecord::RecordNotSaved
Chris@1517:     respond_to do |format|
Chris@1517:       format.html { render :action => 'edit' }
Chris@1517:       format.api { render_validation_errors(@content) }
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   # rename a page
Chris@1517:   def rename
Chris@1517:     return render_403 unless editable?
Chris@1517:     @page.redirect_existing_links = true
Chris@1517:     # used to display the *original* title if some AR validation errors occur
Chris@1517:     @original_title = @page.pretty_title
Chris@1517:     if request.post? && @page.update_attributes(params[:wiki_page])
Chris@1517:       flash[:notice] = l(:notice_successful_update)
Chris@1517:       redirect_to project_wiki_page_path(@project, @page.title)
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   def protect
Chris@1517:     @page.update_attribute :protected, params[:protected]
Chris@1517:     redirect_to project_wiki_page_path(@project, @page.title)
Chris@1517:   end
Chris@1517: 
Chris@1517:   # show page history
Chris@1517:   def history
Chris@1517:     @version_count = @page.content.versions.count
Chris@1517:     @version_pages = Paginator.new @version_count, per_page_option, params['page']
Chris@1517:     # don't load text
Chris@1517:     @versions = @page.content.versions.
Chris@1517:       select("id, author_id, comments, updated_on, version").
Chris@1517:       reorder('version DESC').
Chris@1517:       limit(@version_pages.per_page + 1).
Chris@1517:       offset(@version_pages.offset).
Chris@1517:       all
Chris@1517: 
Chris@1517:     render :layout => false if request.xhr?
Chris@1517:   end
Chris@1517: 
Chris@1517:   def diff
Chris@1517:     @diff = @page.diff(params[:version], params[:version_from])
Chris@1517:     render_404 unless @diff
Chris@1517:   end
Chris@1517: 
Chris@1517:   def annotate
Chris@1517:     @annotate = @page.annotate(params[:version])
Chris@1517:     render_404 unless @annotate
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Removes a wiki page and its history
Chris@1517:   # Children can be either set as root pages, removed or reassigned to another parent page
Chris@1517:   def destroy
Chris@1517:     return render_403 unless editable?
Chris@1517: 
Chris@1517:     @descendants_count = @page.descendants.size
Chris@1517:     if @descendants_count > 0
Chris@1517:       case params[:todo]
Chris@1517:       when 'nullify'
Chris@1517:         # Nothing to do
Chris@1517:       when 'destroy'
Chris@1517:         # Removes all its descendants
Chris@1517:         @page.descendants.each(&:destroy)
Chris@1517:       when 'reassign'
Chris@1517:         # Reassign children to another parent page
Chris@1517:         reassign_to = @wiki.pages.find_by_id(params[:reassign_to_id].to_i)
Chris@1517:         return unless reassign_to
Chris@1517:         @page.children.each do |child|
Chris@1517:           child.update_attribute(:parent, reassign_to)
Chris@1517:         end
Chris@1517:       else
Chris@1517:         @reassignable_to = @wiki.pages - @page.self_and_descendants
Chris@1517:         # display the destroy form if it's a user request
Chris@1517:         return unless api_request?
Chris@1517:       end
Chris@1517:     end
Chris@1517:     @page.destroy
Chris@1517:     respond_to do |format|
Chris@1517:       format.html { redirect_to project_wiki_index_path(@project) }
Chris@1517:       format.api { render_api_ok }
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   def destroy_version
Chris@1517:     return render_403 unless editable?
Chris@1517: 
Chris@1517:     @content = @page.content_for_version(params[:version])
Chris@1517:     @content.destroy
Chris@1517:     redirect_to_referer_or history_project_wiki_page_path(@project, @page.title)
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Export wiki to a single pdf or html file
Chris@1517:   def export
Chris@1517:     @pages = @wiki.pages.
Chris@1517:                       order('title').
Chris@1517:                       includes([:content, {:attachments => :author}]).
Chris@1517:                       all
Chris@1517:     respond_to do |format|
Chris@1517:       format.html {
Chris@1517:         export = render_to_string :action => 'export_multiple', :layout => false
Chris@1517:         send_data(export, :type => 'text/html', :filename => "wiki.html")
Chris@1517:       }
Chris@1517:       format.pdf {
Chris@1517:         send_data(wiki_pages_to_pdf(@pages, @project),
Chris@1517:                   :type => 'application/pdf',
Chris@1517:                   :filename => "#{@project.identifier}.pdf")
Chris@1517:       }
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   def preview
Chris@1517:     page = @wiki.find_page(params[:id])
Chris@1517:     # page is nil when previewing a new page
Chris@1517:     return render_403 unless page.nil? || editable?(page)
Chris@1517:     if page
Chris@1517:       @attachments += page.attachments
Chris@1517:       @previewed = page.content
Chris@1517:     end
Chris@1517:     @text = params[:content][:text]
Chris@1517:     render :partial => 'common/preview'
Chris@1517:   end
Chris@1517: 
Chris@1517:   def add_attachment
Chris@1517:     return render_403 unless editable?
Chris@1517:     attachments = Attachment.attach_files(@page, params[:attachments])
Chris@1517:     render_attachment_warning_if_needed(@page)
Chris@1517:     redirect_to :action => 'show', :id => @page.title, :project_id => @project
Chris@1517:   end
Chris@1517: 
Chris@1517: private
Chris@1517: 
Chris@1517:   def find_wiki
Chris@1517:     @project = Project.find(params[:project_id])
Chris@1517:     @wiki = @project.wiki
Chris@1517:     render_404 unless @wiki
Chris@1517:   rescue ActiveRecord::RecordNotFound
Chris@1517:     render_404
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Finds the requested page or a new page if it doesn't exist
Chris@1517:   def find_existing_or_new_page
Chris@1517:     @page = @wiki.find_or_new_page(params[:id])
Chris@1517:     if @wiki.page_found_with_redirect?
Chris@1517:       redirect_to params.update(:id => @page.title)
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Finds the requested page and returns a 404 error if it doesn't exist
Chris@1517:   def find_existing_page
Chris@1517:     @page = @wiki.find_page(params[:id])
Chris@1517:     if @page.nil?
Chris@1517:       render_404
Chris@1517:       return
Chris@1517:     end
Chris@1517:     if @wiki.page_found_with_redirect?
Chris@1517:       redirect_to params.update(:id => @page.title)
Chris@1517:     end
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Returns true if the current user is allowed to edit the page, otherwise false
Chris@1517:   def editable?(page = @page)
Chris@1517:     page.editable_by?(User.current)
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Returns the default content of a new wiki page
Chris@1517:   def initial_page_content(page)
Chris@1517:     helper = Redmine::WikiFormatting.helper_for(Setting.text_formatting)
Chris@1517:     extend helper unless self.instance_of?(helper)
Chris@1517:     helper.instance_method(:initial_page_content).bind(self).call(page)
Chris@1517:   end
Chris@1517: 
Chris@1517:   def load_pages_for_index
Chris@1517:     @pages = @wiki.pages.with_updated_on.
Chris@1517:                 reorder("#{WikiPage.table_name}.title").
Chris@1517:                 includes(:wiki => :project).
Chris@1517:                 includes(:parent).
Chris@1517:                 all
Chris@1517:   end
Chris@1517: end