App Engine webapp.RequestHandler child instances has no self.request during __init__
- by grucha
i use modified webapp.RequestHandler for handling requests in my app:
class MyRequestHandler(webapp.RequestHandler):
"""
Request handler with some facilities like user.
self.out is the dictionary to pass to templates
"""
def __init__(self, *args, **kwargs):
super(MyRequestHandler, self).__init__(*args, **kwargs)
self.out = {
'user': users.get_current_user(),
'logout_url': users.create_logout_url(self.request.uri)
}
def render(self, template_name):
"""
Shortcut to render templates
"""
self.response.out.write(template.render(template_name, self.out))
class DeviceList(MyRequestHandler):
def get(self):
self.out['devices'] = GPSDevice.all().fetch(1000)
self.render('templates/device_list.html')
but I get an exception:
line 28, in __init__
self.out['logout_url'] = users.create_logout_url(self.request.uri)
AttributeError: 'DeviceList' object has no attribute 'request'
When the code causing exception is moved out of __init__ everything's fine:
class MyRequestHandler(webapp.RequestHandler):
"""
Request handler with some facilities like user.
self.out is the dictionary to pass to templates and initially it contains user object for example
"""
def __init__(self, *args, **kwargs):
super(MyRequestHandler, self).__init__(*args, **kwargs)
self.out = { 'user': users.get_current_user(), }
def render(self, template_name):
"""
Shortcut to render templates
"""
self.out['logout_url'] = users.create_logout_url(self.request.uri)
self.response.out.write(template.render(template_name, self.out))
Whi is that? Why there's no self.request after parent's (i.e. webapp.RequestHandler's) __init__ was executed?
