[Printer] Digicode are stored in bdd

printer/migrations/0010_auto_20181025_1257.py

@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2018-10-25 10:57
+from __future__ import unicode_literals
+
+from django.conf import settings
+import django.core.files.storage
+from django.db import migrations, models
+import django.db.models.deletion
+import printer.utils
+import printer.validators
+import re2o.mixins
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('printer', '0009_jobwithoptions_paid'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Digicode',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('code', models.BigIntegerField(default=0, unique=True)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('used_time', models.DateTimeField(null=True)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL)),
+            ],
+            bases=(re2o.mixins.RevMixin, models.Model),
+        ),
+        migrations.AlterField(
+            model_name='jobwithoptions',
+            name='file',
+            field=models.FileField(storage=django.core.files.storage.FileSystemStorage(location='/var/impressions'), upload_to=printer.models.user_printing_path, validators=[printer.validators.FileValidator(allowed_types=['application/pdf'], max_size=41943040)]),
+        ),
+    ]

printer/models.py

@@ -11,6 +11,7 @@ from numpy.random import randint
 import unidecode
 
 from django.core.files.storage import FileSystemStorage
+from django.core.exceptions import ObjectDoesNotExist
 
 from django.db import models
 from django.forms import ValidationError
@@ -21,8 +22,6 @@ from re2o.mixins import RevMixin
 
 import users.models
 
-import unidecode
-
 from .validators import (
     FileValidator,
 )
@@ -54,6 +53,28 @@ def user_printing_path(instance, filename):
     return 'printings/user_{0}/{1}'.format(instance.user.id, unidecode.unidecode(filename))
 
 
+class Digicode(RevMixin, models.Model):
+        """
+    This is a model to represent a digicode, maybe should be an external app.
+        """
+        code = models.BigIntegerField(default=0, unique=True)
+        user = models.ForeignKey('users.User', on_delete=models.PROTECT)
+        created = models.DateTimeField(auto_now_add=True)
+        used_time = models.DateTimeField(null=True)
+
+        def _gen_code(user):
+            try_again = True
+            while try_again:
+                try:
+                    code = randint(695895, 6958942)*1437+38
+                    Digicode.objects.get(code=code)
+                except ObjectDoesNotExist:
+                    try_again = False
+            digicode = Digicode.objects.create(code=code, user=user)
+            digicode.save()
+            return (str(code) + '#')
+
+
 class JobWithOptions(RevMixin, models.Model):
         """
     This is the main model of printer application :

printer/utils.py

@@ -5,9 +5,9 @@ import os
 from django.template.loader import get_template
 from django.core.mail import EmailMessage
 
-from preferences.models import OptionalPrinter, GeneralOption, AssoOption
+from preferences.models import GeneralOption, AssoOption
 
-from numpy.random import randint
+from .models import Digicode
 
 import datetime
 
@@ -54,20 +54,11 @@ def pdfbook(file_path):
         ])
     return newfile
 
-
-def gen_code():
-    code = randint(10**9, 10**10-1)
-    while code % 1437 != 38:
-        code = randint(10**9, 10**10-1)
-    return (str(code) + '#')
-
-
 def send_mail_printer(client):
     """Sends an email to the client explaning how to get the printings"""
 
     template = get_template('printer/email_printer')
-    code = gen_code()
+    code = Digicode._gen_code(client)
-
 
     printer_access_fr = "au quatrième (4) étage du bâtiment J (code B7806)"
     printer_access_en = "on fourth (4th) floor of building J (code B7806)"