app/soc/modules/gci/views/age_check.py

#!/usr/bin/env python2.5
#
# Copyright 2011 the Melange authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Module for the GCI age check.
"""


from django import forms

from soc.logic import validate

from soc.views.helper import url_patterns

from soc.modules.gci.views import forms as gci_forms
from soc.modules.gci.views.base import RequestHandler
from soc.modules.gci.views.helper.url_patterns import url


class AgeCheckForm(gci_forms.GCIModelForm):
  """Django form for the Age verification page.
  """

  class Meta:
    model = None
    css_prefix = 'gci_age_check'
    fields = ['birth_date']

  birth_date = forms.DateField(label='Date of birth (YYYY-MM-DD)',
      required=True)


class AgeCheck(RequestHandler):
  """View for the GCI age check.
  """

  def djangoURLPatterns(self):
    """The URL pattern for the view.
    """
    return [
        url(r'age_check/%s$' % url_patterns.PROGRAM, self,
            name='gci_age_check')]

  def checkAccess(self):
    """Ensures that student sign up is active and the user is logged out.
    """
    self.check.studentSignupActive()
    self.check.isLoggedOut()

  def templatePath(self):
    """Returns the path to the template.
    """
    return 'v2/modules/gci/age_check/base.html'

  def context(self):
    """Handler for default HTTP GET request.
    """
    context = {
        'page_name': 'Age Verification for %s' % self.data.program.name,
        'program': self.data.program,
        'failed_check': False
        }

    cookies = self.request.COOKIES
    age_check_result =  cookies.get('age_check', None)

    if age_check_result == '0':
      context['failed_check'] = True
    elif age_check_result:
      # age check passed, redirect to create profile page
      self.redirect.createProfile('student').to('create_gci_profile',
                                                secure=True)
      return {}

    if self.data.POST:
      context['form'] = AgeCheckForm(self.data.POST)
    else:
      context['form'] = AgeCheckForm()

    return context

  def post(self):
    """Handles POST requests.
    """
    form = AgeCheckForm(self.data.POST)

    if not form.is_valid():
      return self.get()

    program = self.data.program
    birth_date = form.cleaned_data['birth_date']

    age_sufficient = validate.isAgeSufficientForProgram(birth_date, program)
    if age_sufficient:
      self.response.set_cookie('age_check', birth_date)
    else:
      self.response.set_cookie('age_check', '0')

    # redirect to the same page and have the cookies sent across
    self.redirect.program().to('gci_age_check')