diff app/controllers/wiki_controller.rb @ 0:513646585e45

* Import Redmine trunk SVN rev 3859

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/controllers/wiki_controller.rb	Fri Jul 23 15:52:44 2010 +0100
@@ -0,0 +1,248 @@
+# redMine - project management software
+# Copyright (C) 2006-2007  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'
+
+class WikiController < ApplicationController
+  default_search_scope :wiki_pages
+  before_filter :find_wiki, :authorize
+  before_filter :find_existing_page, :only => [:rename, :protect, :history, :diff, :annotate, :add_attachment, :destroy]
+  
+  verify :method => :post, :only => [:destroy, :protect], :redirect_to => { :action => :index }
+
+  helper :attachments
+  include AttachmentsHelper   
+  helper :watchers
+  
+  # display a page (in editing mode if it doesn't exist)
+  def index
+    page_title = params[:page]
+    @page = @wiki.find_or_new_page(page_title)
+    if @page.new_record?
+      if User.current.allowed_to?(:edit_wiki_pages, @project) && editable?
+        edit
+        render :action => 'edit'
+      else
+        render_404
+      end
+      return
+    end
+    if params[:version] && !User.current.allowed_to?(:view_wiki_edits, @project)
+      # Redirects user to the current version if he's not allowed to view previous versions
+      redirect_to :version => nil
+      return
+    end
+    @content = @page.content_for_version(params[:version])
+    if User.current.allowed_to?(:export_wiki_pages, @project)
+      if 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?
+    render :action => 'show'
+  end
+  
+  # edit an existing page or a new one
+  def edit
+    @page = @wiki.find_or_new_page(params[:page])    
+    return render_403 unless editable?
+    @page.content = WikiContent.new(:page => @page) if @page.new_record?
+    
+    @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
+    if request.get?
+      # To prevent StaleObjectError exception when reverting to a previous version
+      @content.version = @page.content.version
+    else
+      if !@page.new_record? && @content.text == params[:content][:text]
+        attachments = Attachment.attach_files(@page, params[:attachments])
+        render_attachment_warning_if_needed(@page)
+        # don't save if text wasn't changed
+        redirect_to :action => 'index', :id => @project, :page => @page.title
+        return
+      end
+      #@content.text = params[:content][:text]
+      #@content.comments = params[:content][:comments]
+      @content.attributes = params[:content]
+      @content.author = User.current
+      # if page is new @page.save will also save content, but not if page isn't a new record
+      if (@page.new_record? ? @page.save : @content.save)
+        attachments = Attachment.attach_files(@page, params[:attachments])
+        render_attachment_warning_if_needed(@page)
+        call_hook(:controller_wiki_edit_after_save, { :params => params, :page => @page})
+        redirect_to :action => 'index', :id => @project, :page => @page.title
+      end
+    end
+  rescue ActiveRecord::StaleObjectError
+    # Optimistic locking exception
+    flash[:error] = l(:notice_locking_conflict)
+  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 :action => 'index', :id => @project, :page => @page.title
+    end
+  end
+  
+  def protect
+    @page.update_attribute :protected, params[:protected]
+    redirect_to :action => 'index', :id => @project, :page => @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['p']
+    # don't load text    
+    @versions = @page.content.versions.find :all, 
+                                            :select => "id, author_id, comments, updated_on, version",
+                                            :order => 'version DESC',
+                                            :limit  =>  @version_pages.items_per_page + 1,
+                                            :offset =>  @version_pages.current.offset
+
+    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
+        return
+      end
+    end
+    @page.destroy
+    redirect_to :action => 'special', :id => @project, :page => 'Page_index'
+  end
+
+  # display special pages
+  def special
+    page_title = params[:page].downcase
+    case page_title
+    # show pages index, sorted by title
+    when 'page_index', 'date_index'
+      # eager load information about last updates, without loading text
+      @pages = @wiki.pages.find :all, :select => "#{WikiPage.table_name}.*, #{WikiContent.table_name}.updated_on",
+                                      :joins => "LEFT JOIN #{WikiContent.table_name} ON #{WikiContent.table_name}.page_id = #{WikiPage.table_name}.id",
+                                      :order => 'title'
+      @pages_by_date = @pages.group_by {|p| p.updated_on.to_date}
+      @pages_by_parent_id = @pages.group_by(&:parent_id)
+    # export wiki to a single html file
+    when 'export'
+      if User.current.allowed_to?(:export_wiki_pages, @project)
+        @pages = @wiki.pages.find :all, :order => 'title'
+        export = render_to_string :action => 'export_multiple', :layout => false
+        send_data(export, :type => 'text/html', :filename => "wiki.html")
+      else
+        redirect_to :action => 'index', :id => @project, :page => nil
+      end
+      return      
+    else
+      # requested special page doesn't exist, redirect to default page
+      redirect_to :action => 'index', :id => @project, :page => nil
+      return
+    end
+    render :action => "special_#{page_title}"
+  end
+  
+  def preview
+    page = @wiki.find_page(params[:page])
+    # page is nil when previewing a new page
+    return render_403 unless page.nil? || editable?(page)
+    if page
+      @attachements = 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 => 'index', :page => @page.title
+  end
+
+private
+  
+  def find_wiki
+    @project = Project.find(params[:id])
+    @wiki = @project.wiki
+    render_404 unless @wiki
+  rescue ActiveRecord::RecordNotFound
+    render_404
+  end
+  
+  # Finds the requested page and returns a 404 error if it doesn't exist
+  def find_existing_page
+    @page = @wiki.find_page(params[:page])
+    render_404 if @page.nil?
+  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
+end