[web] safety belt to avoid overriding pageid with loadxhtml()
HtmlHeaders.define_var() now accepts a third optional 'override' paramater.
If set to False, the variable won't be evaluated if it's already defined
in the page.
"""Set of HTML errors views. Error view are generally implemented
as startup views and are used for standard error pages (404, 500, etc.)
:organization: Logilab
:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
from cubicweb.view import StartupView
class FourOhFour(StartupView):
id = '404'
def call(self):
_ = self.req._
self.w(u"<h1>%s</h1>" % _('this resource does not exist'))
class ErrorOccured(StartupView):
id = '500'
def call(self):
_ = self.req._
self.w(u"<h1>%s</h1>" %
_('an error occured, the request cannot be fulfilled'))