don't overrwrite files from different lessons

[edumed.git] / contact / models.py

diff --git a/contact/models.py b/contact/models.py
index 6b33d29..dbc48b9 100644 (file)
--- a/contact/models.py
+++ b/contact/models.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
 import yaml
-from django.core.files.storage import FileSystemStorage
+from hashlib import sha1
 from django.db import models
+from django.utils.encoding import smart_unicode, force_str
 from django.utils.translation import ugettext_lazy as _
 from jsonfield import JSONField
 from . import app_settings
@@ -17,11 +18,9 @@ class Contact(models.Model):
     @staticmethod
     def pretty_print(value, for_html=False):
         if type(value) in (tuple, list, dict):
-            value = yaml.safe_dump(value, 
-                allow_unicode=True,
-                default_flow_style=False)
+            value = yaml.safe_dump(value, allow_unicode=True, default_flow_style=False)
             if for_html:
-                value = value.replace(" ", unichr(160))
+                value = smart_unicode(value).replace(u" ", unichr(160))
         return value
 
     class Meta:
@@ -32,6 +31,12 @@ class Contact(models.Model):
     def __unicode__(self):
         return unicode(self.created_at)
 
+    def digest(self):
+        serialized_body = ';'.join(sorted('%s:%s' % item for item in self.body.iteritems()))
+        data = '%s%s%s%s%s' % (self.id, self.contact, serialized_body, self.ip, self.form_tag)
+        data = force_str(data)
+        return sha1(data).hexdigest()
+
 
 class Attachment(models.Model):
     contact = models.ForeignKey(Contact)
@@ -40,7 +45,7 @@ class Attachment(models.Model):
 
     @models.permalink
     def get_absolute_url(self):
-        return ('contact_attachment', [self.contact_id, self.tag])
+        return 'contact_attachment', [self.contact_id, self.tag]
 
 
 __import__(app_settings.FORMS_MODULE)