local.py

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from django.shortcuts import render_to_response
from django.template import RequestContext
from django.contrib import messages
from django.utils.translation import ugettext as _
from django.views.decorators.csrf import csrf_exempt

from astakos.im.util import prepare_response, get_query
from astakos.im.views import requires_anonymous
from astakos.im.forms import LoginForm
from astakos.im.settings import RATELIMIT_RETRIES_ALLOWED

from ratelimit.decorators import ratelimit

retries = RATELIMIT_RETRIES_ALLOWED - 1
rate = str(retries) + '/m'


@csrf_exempt
@requires_anonymous
@ratelimit(field='username', method='POST', rate=rate)
def login(request, on_failure='im/login.html'):
    """
    on_failure: the template name to render on login failure
    """
    was_limited = getattr(request, 'limited', False)
    form = LoginForm(data=request.POST,
                     was_limited=was_limited,
                     request=request
                     )
    next = get_query(request).get('next', '')
    if not form.is_valid():
        return render_to_response(on_failure,
                                  {'login_form': form,
                                   'next': next},
                                  context_instance=RequestContext(request))
    # get the user from the cash
    user = form.user_cache

    message = None
    if not user:
        message = _('Cannot authenticate account')
    elif not user.is_active:
        message = _('Inactive account')
    if message:
        messages.error(request, message)
        return render_to_response(on_failure,
                                  {'form': form},
                                  context_instance=RequestContext(request))

    return prepare_response(request, user, next)