add contact app + konkurs contact form

[wolnelektury.git] / src / contact / forms.py

diff --git a/src/contact/forms.py b/src/contact/forms.py
new file mode 100644 (file)
index 0000000..3cdf59d
--- /dev/null
+++ b/src/contact/forms.py
@@ -0,0 +1,111 @@
+# -*- coding: utf-8 -*-
+from django.contrib.sites.models import Site
+from django.core.exceptions import ValidationError
+from django.core.files.uploadedfile import UploadedFile
+from django.core.mail import send_mail, mail_managers
+from django.core.urlresolvers import reverse
+from django.core.validators import validate_email
+from django import forms
+from django.template.loader import render_to_string
+from django.template import RequestContext
+from django.utils.translation import ugettext_lazy as _
+
+
+contact_forms = {}
+admin_list_width = 0
+
+
+class ContactFormMeta(forms.Form.__class__):
+    def __new__(cls, name, bases, attrs):
+        global admin_list_width
+        model = super(ContactFormMeta, cls).__new__(cls, name, bases, attrs)
+        assert model.form_tag not in contact_forms, 'Duplicate form_tag.'
+        if model.admin_list:
+            admin_list_width = max(admin_list_width, len(model.admin_list))
+        contact_forms[model.form_tag] = model
+        return model
+
+
+class ContactForm(forms.Form):
+    """Subclass and define some fields."""
+    __metaclass__ = ContactFormMeta
+
+    form_tag = None
+    form_title = _('Contact form')
+    submit_label = _('Submit')
+    admin_list = None
+    result_page = False
+
+    required_css_class = 'required'
+    # a subclass has to implement this field, but doing it here breaks the order
+    contact = NotImplemented
+
+    def save(self, request, formsets=None):
+        from .models import Attachment, Contact
+        body = {}
+        for name, value in self.cleaned_data.items():
+            if not isinstance(value, UploadedFile) and name != 'contact':
+                body[name] = value
+
+        for formset in formsets or []:
+            for f in formset.forms:
+                sub_body = {}
+                for name, value in f.cleaned_data.items():
+                    if not isinstance(value, UploadedFile):
+                        sub_body[name] = value
+                if sub_body:
+                    body.setdefault(f.form_tag, []).append(sub_body)
+
+        contact = Contact.objects.create(
+            body=body,
+            ip=request.META['REMOTE_ADDR'],
+            contact=self.cleaned_data['contact'],
+            form_tag=self.form_tag)
+        for name, value in self.cleaned_data.items():
+            if isinstance(value, UploadedFile):
+                attachment = Attachment(contact=contact, tag=name)
+                attachment.file.save(value.name, value)
+                attachment.save()
+
+        site = Site.objects.get_current()
+        dictionary = {
+            'form_tag': self.form_tag,
+            'site_name': getattr(self, 'site_name', site.name),
+            'site_domain': getattr(self, 'site_domain', site.domain),
+            'contact': contact,
+        }
+        context = RequestContext(request)
+        mail_managers_subject = render_to_string([
+                'contact/%s/mail_managers_subject.txt' % self.form_tag,
+                'contact/mail_managers_subject.txt', 
+            ], dictionary, context).strip()
+        mail_managers_body = render_to_string([
+                'contact/%s/mail_managers_body.txt' % self.form_tag,
+                'contact/mail_managers_body.txt', 
+            ], dictionary, context)
+        mail_managers(mail_managers_subject, mail_managers_body, fail_silently=True)
+
+        try:
+            validate_email(contact.contact)
+        except ValidationError:
+            pass
+        else:
+            mail_subject = render_to_string([
+                    'contact/%s/mail_subject.txt' % self.form_tag,
+                    'contact/mail_subject.txt', 
+                ], dictionary, context).strip()
+            if self.result_page:
+                mail_body = render_to_string(
+                    'contact/%s/results_email.txt' % contact.form_tag,
+                    {
+                        'contact': contact,
+                        'results': self.results(contact),
+                    }, context)
+            else:
+                mail_body = render_to_string([
+                        'contact/%s/mail_body.txt' % self.form_tag,
+                        'contact/mail_body.txt',
+                    ], dictionary, context)
+            send_mail(mail_subject, mail_body, 'no-reply@%s' % site.domain, [contact.contact], fail_silently=True)
+
+        return contact