4 from django.db import models
5 from django.contrib.auth.models import User
6 from django.core.exceptions import ValidationError
7 from django.utils.translation import ugettext as _
8 from jsonfield import JSONField
10 from contact.models import Contact
15 class Submission(models.Model):
16 contact = models.ForeignKey(Contact, null = True)
17 key = models.CharField(max_length = 30, unique = True)
18 first_name = models.CharField(max_length = 100)
19 last_name = models.CharField(max_length = 100)
20 email = models.EmailField(max_length = 100, unique = True)
21 answers = models.CharField(max_length = 65536, null = True, blank = True)
22 key_sent = models.BooleanField(default = False)
25 def generate_key(cls):
27 while not key or key in [record['key'] for record in cls.objects.values('key')]:
28 key = ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for i in range(30))
32 def create(cls, first_name, last_name, email, key = None, contact = None):
35 key = key if key else Submission.generate_key(),
36 first_name = first_name,
37 last_name = last_name,
45 class Attachment(models.Model):
46 submission = models.ForeignKey(Submission)
47 name = models.CharField(max_length=100)
48 file = models.FileField(upload_to = 'wtem/attachment')
51 class Assignment(models.Model):
52 user = models.ForeignKey(User)
53 exercises = JSONField()
56 if not isinstance(self.exercises, list):
57 raise ValidationError(_('Assigned exercises must be declared in a list format'))
58 for exercise in self.exercises:
59 if not isinstance(exercise, int) or exercise < 1:
60 raise ValidationError(_('Invalid exercise id: %s' % exercise))