contact/forms.py

   1 # -*- coding: utf-8 -*-
   2 from django.contrib.sites.models import Site
   3 from django.core.exceptions import ValidationError
   4 from django.core.files.uploadedfile import UploadedFile
   5 from django.core.mail import send_mail, mail_managers
   6 from django.core.validators import validate_email
   7 from django import forms
   8 from django.template.loader import render_to_string
   9 from django.template import RequestContext
  10 from django.utils.translation import ugettext_lazy as _
  11
  12 from . import mailing
  13
  14
  15 contact_forms = {}
  16 update_forms = {}
  17 admin_list_width = 0
  18
  19
  20 class ContactFormMeta(forms.Form.__class__):
  21     def __new__(cls, name, bases, attrs):
  22         global admin_list_width
  23         model = super(ContactFormMeta, cls).__new__(cls, name, bases, attrs)
  24         if model.form_tag:
  25             if model.form_type == 'create':
  26                 assert model.form_tag not in contact_forms, 'Duplicate form_tag.'
  27                 if model.admin_list:
  28                     admin_list_width = max(admin_list_width, len(model.admin_list))
  29                 contact_forms[model.form_tag] = model
  30             elif model.form_type == 'update':
  31                 assert model.form_tag not in update_forms, 'Duplicate form_tag.'
  32                 update_forms[model.form_tag] = model
  33         return model
  34
  35
  36 class ContactForm(forms.Form):
  37     """Subclass and define some fields."""
  38     __metaclass__ = ContactFormMeta
  39
  40     form_tag = None
  41     form_type = 'create'
  42     old_form_tags = []
  43     form_title = _('Contact form')
  44     submit_label = _('Submit')
  45     admin_list = None
  46     result_page = False
  47     mailing_field = None
  48     mailing = False
  49     data_processing = None
  50
  51     required_css_class = 'required'
  52     contact = NotImplemented
  53
  54     def __init__(self, *args, **kwargs):
  55         self.instance = kwargs.pop('instance', None)
  56         super(ContactForm, self).__init__(*args, **kwargs)
  57         if not self.is_bound and self.instance:
  58             # files are omitted (not necessary for now)
  59             self.fields['contact'].initial = self.instance.contact
  60             body = self.instance.body
  61             for field, value in body.iteritems():
  62                 if field in self.fields:
  63                     self.fields[field].initial = value
  64
  65     def get_dictionary(self, contact):
  66         site = Site.objects.get_current()
  67         return {
  68             'form_tag': self.form_tag,
  69             'site_name': getattr(self, 'site_name', site.name),
  70             'site_domain': getattr(self, 'site_domain', site.domain),
  71             'contact': contact,
  72         }
  73
  74     def save(self, request, formsets=None):
  75         from .models import Attachment, Contact
  76         body = {}
  77         for name, value in self.cleaned_data.items():
  78             if not isinstance(value, UploadedFile) and name != 'contact':
  79                 body[name] = value
  80
  81         for formset in formsets or []:
  82             for f in formset.forms:
  83                 sub_body = {}
  84                 for name, value in f.cleaned_data.items():
  85                     if not isinstance(value, UploadedFile):
  86                         sub_body[name] = value
  87                 if sub_body:
  88                     body.setdefault(f.form_tag, []).append(sub_body)
  89
  90         if self.instance:
  91             contact = self.instance
  92             contact.body = body
  93             email_changed = contact.contact != self.cleaned_data['contact']
  94             contact.contact = self.cleaned_data['contact']
  95             assert contact.form_tag == self.form_tag
  96             contact.save()
  97         else:
  98             contact = Contact.objects.create(
  99                 body=body,
 100                 ip=request.META['REMOTE_ADDR'],
 101                 contact=self.cleaned_data['contact'],
 102                 form_tag=self.form_tag)
 103             email_changed = True
 104         # not intended to be used with update forms
 105         for name, value in self.cleaned_data.items():
 106             if isinstance(value, UploadedFile):
 107                 attachment = Attachment(contact=contact, tag=name)
 108                 attachment.file.save(value.name, value)
 109                 attachment.save()
 110
 111         site = Site.objects.get_current()
 112         dictionary = self.get_dictionary(contact)
 113         context = RequestContext(request)
 114         mail_managers_subject = render_to_string([
 115                 'contact/%s/mail_managers_subject.txt' % self.form_tag,
 116                 'contact/mail_managers_subject.txt',
 117             ], dictionary, context).strip()
 118         mail_managers_body = render_to_string([
 119                 'contact/%s/mail_managers_body.txt' % self.form_tag,
 120                 'contact/mail_managers_body.txt',
 121             ], dictionary, context)
 122         mail_managers(mail_managers_subject, mail_managers_body, fail_silently=True)
 123
 124         try:
 125             validate_email(contact.contact)
 126         except ValidationError:
 127             pass
 128         else:
 129             if not self.instance:
 130                 mail_subject = render_to_string([
 131                         'contact/%s/mail_subject.txt' % self.form_tag,
 132                         'contact/mail_subject.txt',
 133                     ], dictionary, context).strip()
 134                 if self.result_page:
 135                     mail_body = render_to_string(
 136                         'contact/%s/results_email.txt' % contact.form_tag,
 137                         {
 138                             'contact': contact,
 139                             'results': self.results(contact),
 140                         }, context)
 141                 else:
 142                     mail_body = render_to_string([
 143                             'contact/%s/mail_body.txt' % self.form_tag,
 144                             'contact/mail_body.txt',
 145                         ], dictionary, context)
 146                 send_mail(mail_subject, mail_body, 'no-reply@%s' % site.domain, [contact.contact], fail_silently=True)
 147             if email_changed and (self.mailing or (self.mailing_field and self.cleaned_data[self.mailing_field])):
 148                 mailing.subscribe(contact.contact)
 149
 150         return contact