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.db.models.fields.files import FieldFile
   9 from django.template.loader import render_to_string
  10 from django.template import RequestContext
  11 from django.utils.translation import ugettext_lazy as _
  12
  13 from . import mailing
  14
  15
  16 contact_forms = {}
  17 update_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         if model.form_tag:
  26             if model.form_type == 'create':
  27                 assert model.form_tag not in contact_forms, 'Duplicate form_tag.'
  28                 if model.admin_list:
  29                     admin_list_width = max(admin_list_width, len(model.admin_list))
  30                 contact_forms[model.form_tag] = model
  31             elif model.form_type == 'update':
  32                 assert model.form_tag not in update_forms, 'Duplicate form_tag.'
  33                 update_forms[model.form_tag] = model
  34         return model
  35
  36
  37 class ContactForm(forms.Form):
  38     """Subclass and define some fields."""
  39     __metaclass__ = ContactFormMeta
  40
  41     form_tag = None
  42     form_type = 'create'
  43     updatable = False
  44     old_form_tags = []
  45     form_title = _('Contact form')
  46     submit_label = _('Submit')
  47     admin_list = None
  48     result_page = False
  49     mailing_field = None
  50     mailing = False
  51     data_processing = None
  52     form_formsets = {}
  53
  54     disabled = False
  55     disabled_template = None
  56
  57     required_css_class = 'required'
  58     contact = NotImplemented
  59
  60     def __init__(self, data=None, files=None, *args, **kwargs):
  61         self.instance = kwargs.pop('instance', None)
  62         if self.instance and (data is not None or files is not None):
  63             for attachment in self.instance.attachment_set.all():
  64                 if attachment.tag not in files:
  65                     files[attachment.tag] = attachment.file
  66         super(ContactForm, self).__init__(data, files, *args, **kwargs)
  67         if not self.is_bound and self.instance:
  68             self.fields['contact'].initial = self.instance.contact
  69             body = self.instance.body
  70             for field, value in body.iteritems():
  71                 if field in self.fields:
  72                     self.fields[field].initial = value
  73             for attachment in self.instance.attachment_set.all():
  74                 self.fields[attachment.tag].initial = attachment
  75
  76     def get_dictionary(self, contact):
  77         site = Site.objects.get_current()
  78         return {
  79             'form_tag': self.form_tag,
  80             'site_name': getattr(self, 'site_name', site.name),
  81             'site_domain': getattr(self, 'site_domain', site.domain),
  82             'contact': contact,
  83         }
  84
  85     @classmethod
  86     def is_disabled(cls):
  87         # end_time = localtime_to_utc(datetime(*cls.ends_on)) if cls.ends_on else None
  88         # expired = end_time and end_time < timezone.now()
  89         return cls.disabled  # or expired
  90
  91     def formset_initial(self, prefix):
  92         if not self.instance:
  93             return None
  94         return self.instance.body.get(prefix)
  95
  96     def get_formsets(self, request=None):
  97         request_data = {'data': request.POST, 'files': request.FILES} if request else {}
  98         kwargs_instance = dict(request_data)
  99         kwargs_instance['instance'] = self.instance
 100         formsets = {}
 101         for prefix, formset_class in self.form_formsets.iteritems():
 102             if getattr(formset_class, 'takes_instance', False):
 103                 kwargs = kwargs_instance
 104             else:
 105                 kwargs = request_data
 106             formsets[prefix] = formset_class(
 107                 prefix=prefix, initial=self.formset_initial(prefix), **kwargs)
 108         return formsets
 109
 110     def save(self, request, formsets=None):
 111         from .models import Attachment, Contact
 112         body = {}
 113         for name, value in self.cleaned_data.items():
 114             if not isinstance(value, UploadedFile) and not isinstance(value, FieldFile) and name != 'contact':
 115                 body[name] = value
 116
 117         for formset in formsets or []:
 118             for f in formset.forms:
 119                 sub_body = {}
 120                 for name, value in f.cleaned_data.items():
 121                     if not isinstance(value, UploadedFile):
 122                         sub_body[name] = value
 123                 if sub_body:
 124                     body.setdefault(f.form_tag, []).append(sub_body)
 125
 126         if self.instance:
 127             contact = self.instance
 128             contact.body = body
 129             email_changed = contact.contact != self.cleaned_data['contact']
 130             contact.contact = self.cleaned_data['contact']
 131             assert contact.form_tag == self.form_tag
 132             contact.save()
 133         else:
 134             contact = Contact.objects.create(
 135                 body=body,
 136                 ip=request.META['REMOTE_ADDR'],
 137                 contact=self.cleaned_data['contact'],
 138                 form_tag=self.form_tag)
 139             contact.generate_key()
 140             contact.save()
 141             email_changed = True
 142         for name, value in self.cleaned_data.items():
 143             if isinstance(value, UploadedFile):
 144                 Attachment.objects.filter(contact=contact, tag=name).delete()  # delete files?
 145                 attachment = Attachment(contact=contact, tag=name)
 146                 attachment.file.save(value.name, value)
 147                 attachment.save()
 148
 149         site = Site.objects.get_current()
 150         dictionary = self.get_dictionary(contact)
 151         context = RequestContext(request)
 152         mail_managers_subject = render_to_string([
 153                 'contact/%s/mail_managers_subject.txt' % self.form_tag,
 154                 'contact/mail_managers_subject.txt',
 155             ], dictionary, context).strip()
 156         mail_managers_body = render_to_string([
 157                 'contact/%s/mail_managers_body.txt' % self.form_tag,
 158                 'contact/mail_managers_body.txt',
 159             ], dictionary, context)
 160         mail_managers(mail_managers_subject, mail_managers_body, fail_silently=True)
 161
 162         try:
 163             validate_email(contact.contact)
 164         except ValidationError:
 165             pass
 166         else:
 167             if not self.instance:
 168                 mail_subject = render_to_string([
 169                         'contact/%s/mail_subject.txt' % self.form_tag,
 170                         'contact/mail_subject.txt',
 171                     ], dictionary, context).strip()
 172                 if self.result_page:
 173                     mail_body = render_to_string(
 174                         'contact/%s/results_email.txt' % contact.form_tag,
 175                         {
 176                             'contact': contact,
 177                             'results': self.results(contact),
 178                         }, context)
 179                 else:
 180                     mail_body = render_to_string([
 181                             'contact/%s/mail_body.txt' % self.form_tag,
 182                             'contact/mail_body.txt',
 183                         ], dictionary, context)
 184                 send_mail(mail_subject, mail_body, 'no-reply@%s' % site.domain, [contact.contact], fail_silently=True)
 185             if email_changed and (self.mailing or (self.mailing_field and self.cleaned_data[self.mailing_field])):
 186                 mailing.subscribe(contact.contact)
 187
 188         return contact