django-orchestra/orchestra/admin/actions.py

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from django.contrib import admin, messages
from django.core.mail import send_mass_mail
from django.shortcuts import render
from django.utils.translation import ungettext, ugettext_lazy as _
from .. import settings
from .utils import change_url
from .forms import SendEmailForm
class SendEmail(object):
""" Form wizard for billing orders admin action """
short_description = _("Send email")
form = SendEmailForm
template = 'admin/orchestra/generic_confirmation.html'
default_from = settings.ORCHESTRA_DEFAULT_SUPPORT_FROM_EMAIL
__name__ = 'semd_email'
def __call__(self, modeladmin, request, queryset):
""" make this monster behave like a function """
self.modeladmin = modeladmin
self.queryset = queryset
self.opts = modeladmin.model._meta
app_label = self.opts.app_label
self.context = {
'action_name': _("Send email"),
'action_value': self.__name__,
'opts': self.opts,
'app_label': app_label,
'queryset': queryset,
'action_checkbox_name': admin.helpers.ACTION_CHECKBOX_NAME,
}
return self.write_email(request)
def write_email(self, request):
if not request.user.is_superuser:
raise PermissionDenied
initial={
'email_from': self.default_from,
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'to': ' '.join(self.get_queryset_emails())
}
form = self.form(initial=initial)
if request.POST.get('post'):
form = self.form(request.POST, initial=initial)
if form.is_valid():
options = {
'email_from': form.cleaned_data['email_from'],
'extra_to': form.cleaned_data['extra_to'],
'subject': form.cleaned_data['subject'],
'message': form.cleaned_data['message'],
}
return self.confirm_email(request, **options)
opts = self.modeladmin.model._meta
app_label = opts.app_label
self.context.update({
'title': _("Send e-mail to %s") % self.opts.verbose_name_plural,
'content_title': "",
'form': form,
'submit_value': _("Continue"),
})
# Display confirmation page
return render(request, self.template, self.context)
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def get_queryset_emails(self):
return self.queryset.value_list('email', flat=True)
def confirm_email(self, request, **options):
email_from = options['email_from']
extra_to = options['extra_to']
subject = options['subject']
message = options['message']
# The user has already confirmed
if request.POST.get('post') == 'email_confirmation':
emails = []
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num = 0
for email in self.get_queryset_emails():
emails.append((subject, message, email_from, [email]))
num += 1
if extra_to:
emails.append((subject, message, email_from, extra_to))
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send_mass_mail(emails, fail_silently=False)
msg = ungettext(
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_("Message has been sent to one %s.") % self.opts.verbose_name_plural,
_("Message has been sent to %i %s.") % (num, self.opts.verbose_name_plural),
num
)
self.modeladmin.message_user(request, msg)
return None
form = self.form(initial={
'email_from': email_from,
'extra_to': ', '.join(extra_to),
'subject': subject,
'message': message
})
self.context.update({
'title': _("Are you sure?"),
'content_message': _(
"Are you sure you want to send the following message to the following %s?"
) % self.opts.verbose_name_plural,
'display_objects': ["%s (%s)" % (contact, contact.email) for contact in self.queryset],
'form': form,
'subject': subject,
'message': message,
'post_value': 'email_confirmation',
})
# Display the confirmation page
return render(request, self.template, self.context)