# The filters added to this controller will be run for all controllers in the application.
# Likewise will all the methods added be available for all controllers.
class ApplicationController < ActionController::Base
before_filter :connect_to_model, :setup_url_generator, :set_content_type_header, :set_robots_metatag
after_filter :remember_location, :teardown_url_generator
observer :page_observer
# For injecting a different wiki model implementation. Intended for use in tests
def self.wiki=(the_wiki)
# a global variable is used here because Rails reloads controller and model classes in the
# development environment; therefore, storing it as a class variable does not work
# class variable is, anyway, not much different from a global variable
#$instiki_wiki_service = the_wiki
logger.debug("Wiki service: #{the_wiki.to_s}")
end
def self.wiki
Wiki.new
end
protected
def authorized?
@web.nil? ||
@web.password.nil? ||
cookies['web_address'] == @web.password ||
password_check(@params['password'])
end
def check_authorization
if in_a_web? and needs_authorization?(@action_name) and not authorized? and
redirect_to :controller => 'wiki', :action => 'login', :web => @web_name
return false
end
end
def connect_to_model
@action_name = @params['action'] || 'index'
@web_name = @params['web']
@wiki = wiki
if @web_name
@web = @wiki.webs[@web_name]
if @web.nil?
render_text "Unknown web '#{@web_name}'", '404 Not Found'
return false
end
end
@page_name = @file_name = @params['id']
@page = @wiki.read_page(@web_name, @page_name) unless @page_name.nil?
@author = cookies['author'] || 'AnonymousCoward'
check_authorization
end
FILE_TYPES = {
'.exe' => 'application/octet-stream',
'.gif' => 'image/gif',
'.jpg' => 'image/jpeg',
'.pdf' => 'application/pdf',
'.png' => 'image/png',
'.txt' => 'text/plain',
'.zip' => 'application/zip'
} unless defined? FILE_TYPES
def send_file(file, options = {})
options[:type] ||= (FILE_TYPES[File.extname(file)] || 'application/octet-stream')
options[:stream] = false
super(file, options)
end
def in_a_web?
not @web_name.nil?
end
def password_check(password)
if password == @web.password
cookies['web_address'] = password
true
else
false
end
end
def password_error(password)
if password.nil? or password.empty?
'Please enter the password.'
else
'You entered a wrong password. Please enter the right one.'
end
end
def redirect_home(web = @web_name)
if web
redirect_to_page('HomePage', web)
else
redirect_to_url '/'
end
end
def redirect_to_page(page_name = @page_name, web = @web_name)
redirect_to :web => web, :controller => 'wiki', :action => 'show',
:id => (page_name || 'HomePage')
end
@@REMEMBER_NOT = ['locked', 'save', 'back', 'file', 'pic', 'import']
def remember_location
if @response.headers['Status'] == '200 OK'
unless @@REMEMBER_NOT.include? action_name or @request.method != :get
@session[:return_to] = @request.request_uri
logger.debug("Session ##{session.object_id}: remembered URL '#{@session[:return_to]}'")
end
end
end
def rescue_action_in_public(exception)
message = <<-EOL
Internal Error 500
An application error occurred while processing your request.
EOL
render_text message, 'Internal Error 500'
end
def return_to_last_remembered
# Forget the redirect location
redirect_target, @session[:return_to] = @session[:return_to], nil
tried_home, @session[:tried_home] = @session[:tried_home], false
# then try to redirect to it
if redirect_target.nil?
if tried_home
raise 'Application could not render the index page'
else
logger.debug("Session ##{session.object_id}: no remembered redirect location, trying home")
redirect_home
end
else
logger.debug("Session ##{session.object_id}: " +
"redirect to the last remembered URL #{redirect_target}")
redirect_to_url(redirect_target)
end
end
def set_content_type_header
if %w(rss_with_content rss_with_headlines).include?(action_name)
@response.headers['Content-Type'] = 'text/xml; charset=UTF-8'
else
@response.headers['Content-Type'] = 'text/html; charset=UTF-8'
end
end
def set_robots_metatag
if controller_name == 'wiki' and %w(show published).include? action_name
@robots_metatag_value = 'index,follow'
else
@robots_metatag_value = 'noindex,nofollow'
end
end
def setup_url_generator
PageRenderer.setup_url_generator(UrlGenerator.new(self))
end
def teardown_url_generator
PageRenderer.teardown_url_generator
end
def wiki
self.class.wiki
end
def needs_authorization?(action)
not %w( login authenticate published rss_with_content rss_with_headlines ).include?(action)
end
end