src/contact/forms.py

   1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   3 #
   4 import json
   5 from django.contrib.sites.models import Site
   6 from django.core.exceptions import ValidationError
   7 from django.core.files.uploadedfile import UploadedFile
   8 from django.core.mail import send_mail, mail_managers
   9 from django.core.validators import validate_email
  10 from django import forms
  11 from django.template.loader import render_to_string
  12 from django.template import RequestContext
  13 from django.urls import reverse
  14 from django.utils.translation import ugettext_lazy as _
  15
  16
  17 contact_forms = {}
  18 admin_list_width = 0
  19
  20
  21 class ContactFormMeta(forms.Form.__class__):
  22     def __new__(cls, name, bases, attrs):
  23         global admin_list_width
  24         model = super(ContactFormMeta, cls).__new__(cls, name, bases, attrs)
  25         assert model.form_tag not in contact_forms, 'Duplicate form_tag.'
  26         if model.admin_list:
  27             admin_list_width = max(admin_list_width, len(model.admin_list))
  28         contact_forms[model.form_tag] = model
  29         return model
  30
  31
  32 class ContactForm(forms.Form, metaclass=ContactFormMeta):
  33     """Subclass and define some fields."""
  34
  35     form_tag = None
  36     form_title = _('Contact form')
  37     submit_label = _('Submit')
  38     admin_list = None
  39     result_page = False
  40
  41     required_css_class = 'required'
  42     # a subclass has to implement this field, but doing it here breaks the order
  43     contact = NotImplemented
  44
  45     def save(self, request, formsets=None):
  46         from .models import Attachment, Contact
  47         body = {}
  48         for name, value in self.cleaned_data.items():
  49             if not isinstance(value, UploadedFile) and name != 'contact':
  50                 body[name] = value
  51
  52         for formset in formsets or []:
  53             for f in formset.forms:
  54                 sub_body = {}
  55                 for name, value in f.cleaned_data.items():
  56                     if not isinstance(value, UploadedFile):
  57                         sub_body[name] = value
  58                 if sub_body:
  59                     body.setdefault(f.form_tag, []).append(sub_body)
  60
  61         contact = Contact.objects.create(
  62             body=json.dumps(body),
  63             ip=request.META['REMOTE_ADDR'],
  64             contact=self.cleaned_data['contact'],
  65             form_tag=self.form_tag)
  66         for name, value in self.cleaned_data.items():
  67             if isinstance(value, UploadedFile):
  68                 attachment = Attachment(contact=contact, tag=name)
  69                 attachment.file.save(value.name, value)
  70                 attachment.save()
  71
  72         site = Site.objects.get_current()
  73         dictionary = {
  74             'form_tag': self.form_tag,
  75             'site_name': getattr(self, 'site_name', site.name),
  76             'site_domain': getattr(self, 'site_domain', site.domain),
  77             'contact': contact,
  78         }
  79         context = RequestContext(request)
  80         mail_managers_subject = render_to_string([
  81                 'contact/%s/mail_managers_subject.txt' % self.form_tag,
  82                 'contact/mail_managers_subject.txt',
  83             ], dictionary, context).strip()
  84         mail_managers_body = render_to_string([
  85                 'contact/%s/mail_managers_body.txt' % self.form_tag,
  86                 'contact/mail_managers_body.txt',
  87             ], dictionary, context)
  88         mail_managers(mail_managers_subject, mail_managers_body, fail_silently=True)
  89
  90         try:
  91             validate_email(contact.contact)
  92         except ValidationError:
  93             pass
  94         else:
  95             mail_subject = render_to_string([
  96                     'contact/%s/mail_subject.txt' % self.form_tag,
  97                     'contact/mail_subject.txt',
  98                 ], dictionary, context).strip()
  99             if self.result_page:
 100                 mail_body = render_to_string(
 101                     'contact/%s/results_email.txt' % contact.form_tag,
 102                     {
 103                         'contact': contact,
 104                         'results': self.results(contact),
 105                     }, context)
 106             else:
 107                 mail_body = render_to_string([
 108                         'contact/%s/mail_body.txt' % self.form_tag,
 109                         'contact/mail_body.txt',
 110                     ], dictionary, context)
 111             send_mail(mail_subject, mail_body, 'no-reply@%s' % site.domain, [contact.contact], fail_silently=True)
 112
 113         return contact