[Printer] Move user_printing_path from utils to models (avoid circular import)

printer/migrations/0008_auto_20181012_1242.py

@@ -18,6 +18,6 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='jobwithoptions',
             name='file',
-            field=models.FileField(storage=django.core.files.storage.FileSystemStorage(location='/var/impressions'), upload_to=printer.utils.user_printing_path, validators=[printer.validators.FileValidator(allowed_types=['application/pdf'], max_size=26214400)]),
+            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=26214400)]),
         ),
     ]

printer/models.py

@@ -7,6 +7,9 @@ Author : Maxime Bombar <bombar@crans.org>.
 
 from __future__ import unicode_literals
 
+from numpy.random import randint
+import unidecode
+
 from django.core.files.storage import FileSystemStorage
 
 from django.db import models
@@ -43,10 +46,13 @@ import math
 - ```Job``` is the main model of a printer job. His parent is the ```user``` model.
 """
 
-
 def user_printing_path(instance, filename):
+    """
+    Defines the path where will be uploaded the files
+    """
     # File will be uploaded to MEDIA_ROOT/printings/user_<id>/<filename>
-    return 'printings/user_{0}/{1}'.format(instance.user.id, filename)
+    return 'printings/user_{0}/{1}'.format(instance.user.id, unidecode.unidecode(filename))
+
 
 class JobWithOptions(RevMixin, models.Model):
         """