File size: 4,375 Bytes
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import itertools
import hashlib
from django.db import models
from django.core.mail import send_mass_mail, send_mail
from django.conf import settings
from django.utils.text import slugify
from django.core.urlresolvers import reverse
from django.contrib.sites.shortcuts import get_current_site
from . import creation_email_subject, creation_email_content
class SantaList(models.Model):
name = models.CharField(max_length=200)
slug = models.SlugField(unique=True)
organiser_email = models.EmailField(max_length=200)
email_subject = models.CharField(max_length=200)
email_content = models.TextField()
# For people to sign up
secure_hash_signup = models.CharField(max_length=12, unique=True, null=True)
# For the organiser to review/close
secure_hash_review = models.CharField(max_length=12, unique=True, null=True)
def __str__(self):
return "{0}".format(self.name)
def get_signup_url(self, request):
current_site = get_current_site(request)
secure_hash = self.secure_hash_signup
slug = self.slug
signup_path = reverse('santa:signup', kwargs={'secure_hash': secure_hash, 'slug': slug})
return "{0}{1}".format(current_site.domain, signup_path)
def get_review_url(self, request):
current_site = get_current_site(request)
secure_hash = self.secure_hash_review
slug = self.slug
review_path = reverse('santa:review', kwargs={'secure_hash': secure_hash, 'slug': slug})
return "{0}{1}".format(current_site.domain, review_path)
def send_creation_email(self, request):
signup_url = self.get_signup_url(request)
review_url = self.get_review_url(request)
send_mail(
creation_email_subject,
creation_email_content.format(signup_url, review_url),
settings.DEFAULT_FROM_EMAIL,
[self.organiser_email]
)
def save(self, *args, **kwargs):
if not self.slug:
self.slug = slugify(self.name)
orig_slug = self.slug
for i in itertools.count(1):
if not SantaList.objects.exclude(pk=self.pk).filter(slug=self.slug).exists():
break
self.slug = '%s-%d' % (orig_slug, i)
super().save(*args, **kwargs)
if not self.secure_hash_signup or not self.secure_hash_review:
token = "{0}{1}".format(self.pk, self.slug)
md5 = hashlib.md5(token.encode('utf-8')).hexdigest()
self.secure_hash_signup = md5[:12]
self.secure_hash_review = md5[12:24]
self.save()
def get_email_data(self, pairs):
data_list = []
for giver, receiver in pairs:
email_to = ["Santa's Little Helper <{0}>".format(giver.email)]
content = self.email_content.format(giver=giver, receiver=receiver)
subject = self.email_subject.format(giver=giver, receiver=receiver)
data_item = (subject, content, settings.DEFAULT_FROM_EMAIL, email_to)
data_list.append(data_item)
return tuple(data_list)
def shuffle_recipients(self):
matches = {}
# Get all the people on this list, and shuffle them
person_list = list(self.person_set.all())
random.shuffle(person_list)
# Now that the list is randomised, just match each person, to the next person in the list
for i, person in enumerate(person_list):
try:
matches[person] = person_list[i+1]
except IndexError:
# This is the last person on the list, so match them to the first person, who's currently unmatched
matches[person] = person_list[0]
# Return a tuple of ((giver, receiver,) ...)
return matches.items()
def finish_list(self):
pairs = self.shuffle_recipients()
data = self.get_email_data(pairs)
send_mass_mail(data)
self.person_set.all().delete()
self.delete()
class Person(models.Model):
first_name = models.CharField(max_length=200)
last_name = models.CharField(max_length=200)
email = models.EmailField(max_length=200)
santa_list = models.ForeignKey(SantaList)
@property
def name(self):
return "{0} {1}".format(self.first_name, self.last_name)
def __str__(self):
return self.name
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