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	git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9636 e93f8b46-1217-0410-a6f0-8f06a7374b81
		
			
				
	
	
		
			319 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			319 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
# Redmine - project management software
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# Copyright (C) 2006-2012  Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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require 'diff'
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# The WikiController follows the Rails REST controller pattern but with
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# a few differences
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#
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# * index - shows a list of WikiPages grouped by page or date
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# * new - not used
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# * create - not used
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# * show - will also show the form for creating a new wiki page
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# * edit - used to edit an existing or new page
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# * update - used to save a wiki page update to the database, including new pages
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# * destroy - normal
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#
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# Other member and collection methods are also used
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#
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# TODO: still being worked on
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class WikiController < ApplicationController
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  default_search_scope :wiki_pages
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  before_filter :find_wiki, :authorize
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  before_filter :find_existing_or_new_page, :only => [:show, :edit, :update]
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  before_filter :find_existing_page, :only => [:rename, :protect, :history, :diff, :annotate, :add_attachment, :destroy]
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  helper :attachments
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  include AttachmentsHelper
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  helper :watchers
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  include Redmine::Export::PDF
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  # List of pages, sorted alphabetically and by parent (hierarchy)
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  def index
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    load_pages_for_index
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    @pages_by_parent_id = @pages.group_by(&:parent_id)
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  end
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  # List of page, by last update
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  def date_index
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    load_pages_for_index
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    @pages_by_date = @pages.group_by {|p| p.updated_on.to_date}
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  end
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  # display a page (in editing mode if it doesn't exist)
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  def show
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    if @page.new_record?
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      if User.current.allowed_to?(:edit_wiki_pages, @project) && editable?
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        edit
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        render :action => 'edit'
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      else
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        render_404
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      end
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      return
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    end
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    if params[:version] && !User.current.allowed_to?(:view_wiki_edits, @project)
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      # Redirects user to the current version if he's not allowed to view previous versions
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      redirect_to :version => nil
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      return
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    end
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    @content = @page.content_for_version(params[:version])
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    if User.current.allowed_to?(:export_wiki_pages, @project)
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      if params[:format] == 'pdf'
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        send_data(wiki_page_to_pdf(@page, @project), :type => 'application/pdf', :filename => "#{@page.title}.pdf")
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        return
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      elsif params[:format] == 'html'
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        export = render_to_string :action => 'export', :layout => false
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        send_data(export, :type => 'text/html', :filename => "#{@page.title}.html")
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        return
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      elsif params[:format] == 'txt'
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        send_data(@content.text, :type => 'text/plain', :filename => "#{@page.title}.txt")
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        return
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      end
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    end
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    @editable = editable?
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    @sections_editable = @editable && User.current.allowed_to?(:edit_wiki_pages, @page.project) &&
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      @content.current_version? &&
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      Redmine::WikiFormatting.supports_section_edit?
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    render :action => 'show'
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  end
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  # edit an existing page or a new one
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  def edit
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    return render_403 unless editable?
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    if @page.new_record?
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      @page.content = WikiContent.new(:page => @page)
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      if params[:parent].present?
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        @page.parent = @page.wiki.find_page(params[:parent].to_s)
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      end
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    end
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    @content = @page.content_for_version(params[:version])
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    @content.text = initial_page_content(@page) if @content.text.blank?
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    # don't keep previous comment
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    @content.comments = nil
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    # To prevent StaleObjectError exception when reverting to a previous version
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    @content.version = @page.content.version
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    @text = @content.text
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    if params[:section].present? && Redmine::WikiFormatting.supports_section_edit?
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      @section = params[:section].to_i
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      @text, @section_hash = Redmine::WikiFormatting.formatter.new(@text).get_section(@section)
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      render_404 if @text.blank?
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    end
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  end
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  # Creates a new page or updates an existing one
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  def update
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    return render_403 unless editable?
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    @page.content = WikiContent.new(:page => @page) if @page.new_record?
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    @page.safe_attributes = params[:wiki_page]
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    @content = @page.content_for_version(params[:version])
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    @content.text = initial_page_content(@page) if @content.text.blank?
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    # don't keep previous comment
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    @content.comments = nil
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    if !@page.new_record? && params[:content].present? && @content.text == params[:content][:text]
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      attachments = Attachment.attach_files(@page, params[:attachments])
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      render_attachment_warning_if_needed(@page)
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      # don't save content if text wasn't changed
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      @page.save
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      redirect_to :action => 'show', :project_id => @project, :id => @page.title
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      return
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    end
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    @content.comments = params[:content][:comments]
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    @text = params[:content][:text]
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    if params[:section].present? && Redmine::WikiFormatting.supports_section_edit?
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      @section = params[:section].to_i
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      @section_hash = params[:section_hash]
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      @content.text = Redmine::WikiFormatting.formatter.new(@content.text).update_section(params[:section].to_i, @text, @section_hash)
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    else
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      @content.version = params[:content][:version]
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      @content.text = @text
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    end
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    @content.author = User.current
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    @page.content = @content
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    if @page.save
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      attachments = Attachment.attach_files(@page, params[:attachments])
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      render_attachment_warning_if_needed(@page)
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      call_hook(:controller_wiki_edit_after_save, { :params => params, :page => @page})
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      redirect_to :action => 'show', :project_id => @project, :id => @page.title
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    else
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      render :action => 'edit'
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    end
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  rescue ActiveRecord::StaleObjectError, Redmine::WikiFormatting::StaleSectionError
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    # Optimistic locking exception
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    flash.now[:error] = l(:notice_locking_conflict)
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    render :action => 'edit'
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  rescue ActiveRecord::RecordNotSaved
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    render :action => 'edit'
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  end
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  # rename a page
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  def rename
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    return render_403 unless editable?
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    @page.redirect_existing_links = true
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    # used to display the *original* title if some AR validation errors occur
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    @original_title = @page.pretty_title
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    if request.post? && @page.update_attributes(params[:wiki_page])
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      flash[:notice] = l(:notice_successful_update)
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      redirect_to :action => 'show', :project_id => @project, :id => @page.title
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    end
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  end
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  def protect
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    @page.update_attribute :protected, params[:protected]
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    redirect_to :action => 'show', :project_id => @project, :id => @page.title
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  end
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  # show page history
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  def history
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    @version_count = @page.content.versions.count
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    @version_pages = Paginator.new self, @version_count, per_page_option, params['p']
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    # don't load text
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    @versions = @page.content.versions.find :all,
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                                            :select => "id, author_id, comments, updated_on, version",
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                                            :order => 'version DESC',
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                                            :limit  =>  @version_pages.items_per_page + 1,
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                                            :offset =>  @version_pages.current.offset
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    render :layout => false if request.xhr?
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  end
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  def diff
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    @diff = @page.diff(params[:version], params[:version_from])
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    render_404 unless @diff
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  end
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  def annotate
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    @annotate = @page.annotate(params[:version])
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    render_404 unless @annotate
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  end
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  # Removes a wiki page and its history
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  # Children can be either set as root pages, removed or reassigned to another parent page
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  def destroy
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    return render_403 unless editable?
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    @descendants_count = @page.descendants.size
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    if @descendants_count > 0
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      case params[:todo]
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      when 'nullify'
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        # Nothing to do
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      when 'destroy'
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        # Removes all its descendants
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        @page.descendants.each(&:destroy)
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      when 'reassign'
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        # Reassign children to another parent page
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        reassign_to = @wiki.pages.find_by_id(params[:reassign_to_id].to_i)
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        return unless reassign_to
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        @page.children.each do |child|
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          child.update_attribute(:parent, reassign_to)
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        end
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      else
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        @reassignable_to = @wiki.pages - @page.self_and_descendants
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        return
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      end
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    end
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    @page.destroy
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    redirect_to :action => 'index', :project_id => @project
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  end
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  # Export wiki to a single pdf or html file
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  def export
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    @pages = @wiki.pages.all(:order => 'title', :include => [:content, :attachments], :limit => 75)
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    respond_to do |format|
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      format.html {
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        export = render_to_string :action => 'export_multiple', :layout => false
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        send_data(export, :type => 'text/html', :filename => "wiki.html")
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      }
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      format.pdf {
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        send_data(wiki_pages_to_pdf(@pages, @project), :type => 'application/pdf', :filename => "#{@project.identifier}.pdf")
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      }
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    end
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  end
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  def preview
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    page = @wiki.find_page(params[:id])
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    # page is nil when previewing a new page
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    return render_403 unless page.nil? || editable?(page)
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    if page
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      @attachements = page.attachments
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      @previewed = page.content
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    end
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    @text = params[:content][:text]
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    render :partial => 'common/preview'
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  end
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  def add_attachment
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    return render_403 unless editable?
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    attachments = Attachment.attach_files(@page, params[:attachments])
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    render_attachment_warning_if_needed(@page)
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    redirect_to :action => 'show', :id => @page.title, :project_id => @project
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  end
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private
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  def find_wiki
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    @project = Project.find(params[:project_id])
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    @wiki = @project.wiki
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    render_404 unless @wiki
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  rescue ActiveRecord::RecordNotFound
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    render_404
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  end
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  # Finds the requested page or a new page if it doesn't exist
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  def find_existing_or_new_page
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    @page = @wiki.find_or_new_page(params[:id])
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    if @wiki.page_found_with_redirect?
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      redirect_to params.update(:id => @page.title)
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    end
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  end
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  # Finds the requested page and returns a 404 error if it doesn't exist
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  def find_existing_page
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    @page = @wiki.find_page(params[:id])
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    if @page.nil?
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      render_404
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      return
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    end
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    if @wiki.page_found_with_redirect?
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      redirect_to params.update(:id => @page.title)
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    end
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  end
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  # Returns true if the current user is allowed to edit the page, otherwise false
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  def editable?(page = @page)
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    page.editable_by?(User.current)
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  end
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  # Returns the default content of a new wiki page
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  def initial_page_content(page)
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    helper = Redmine::WikiFormatting.helper_for(Setting.text_formatting)
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    extend helper unless self.instance_of?(helper)
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    helper.instance_method(:initial_page_content).bind(self).call(page)
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  end
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  def load_pages_for_index
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    @pages = @wiki.pages.with_updated_on.all(:order => 'title', :include => {:wiki => :project})
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  end
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end
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