From 3961e2bdfa2cb946f1bd367c9a7a392528bbaeef Mon Sep 17 00:00:00 2001
From: Weitian LI <liweitianux@gmail.com>
Date: Tue, 24 Jun 2014 17:11:44 +0800
Subject: Splited storage function from account.extra

* Splited storage function from account.extra -> tools/storage.py
  - OverwriteStorage
  - file_cleanup
* Updated account.models, archive.models
* Added OverwriteStorage and file_cleanup function to notice.models
---
 account/extra.py  | 53 -----------------------------------------------------
 account/models.py |  3 ++-
 2 files changed, 2 insertions(+), 54 deletions(-)

(limited to 'account')

diff --git a/account/extra.py b/account/extra.py
index d0f74f2..c75ce1c 100644
--- a/account/extra.py
+++ b/account/extra.py
@@ -6,16 +6,11 @@ Extra models for app account
 
 from django import forms
 from django.db import models
-from django.db.models.fields.files import FieldFile
-from django.core.files.storage import FileSystemStorage
-from django.conf import settings
 from django.template.defaultfilters import filesizeformat
 from django.utils.translation import ugettext_lazy as _
 
 from south.modelsinspector import add_introspection_rules
 
-import os
-
 
 ### custom fields ###
 class ContentTypeRestrictedFileField(models.FileField):
@@ -70,51 +65,3 @@ add_introspection_rules([
 ], ["^account\.extra\.ContentTypeRestrictedFileField"])
 
 
-### OverwriteStorage ###
-class OverwriteStorage(FileSystemStorage):
-    """
-    overwrite original file before store the new one
-    """
-    def get_available_name(self, name):
-        """
-        Returns a filename that's free on the target storage system,
-        and available for new content to be written to.
-        Ref: http://djangosnippets.org/snippets/976/
-
-        This file storage solves overwrite on upload problem. Another
-        proposed solution was to override the save method on the model
-        like so (from https://code.djangoproject.com/ticket/11663):
-
-        def save(self, *args, **kwargs):
-            try:
-                this = MyModelName.objects.get(id=self.id)
-                if this.MyImageFieldName != self.MyImageFieldName:
-                    this.MyImageFieldName.delete()
-            except: pass
-            super(MyModelName, self).save(*args, **kwargs)
-        """
-        # If the filename already exists,
-        # remove it as if it was a true file system
-        if self.exists(name):
-            filepath = os.path.join(settings.MEDIA_ROOT, name)
-            if os.path.isfile(filepath):
-                os.remove(filepath)
-        return name
-
-
-### delete files associated with model FileField
-# Pre-delete signal function for deleting files a model
-# https://djangosnippets.org/snippets/2820/
-def file_cleanup(sender, instance, *args, **kwargs):
-    """
-    Deletes the file(s) associated with a model instance. The model
-    is not saved after deletion of the file(s) since this is meant
-    to be used with the pre_delete signal.
-    """
-    for field_name, _ in instance.__dict__.iteritems():
-        field = getattr(instance, field_name)
-        if (issubclass(field.__class__, FieldFile) and field.name):
-            # pass False so FileField does not save the model
-            field.delete(save=False)
-
-
diff --git a/account/models.py b/account/models.py
index 62276b8..4199941 100644
--- a/account/models.py
+++ b/account/models.py
@@ -13,7 +13,8 @@ from django.utils.translation import ugettext_lazy as _
 from django.db.models.signals import pre_delete
 from registration.signals import user_registered, user_activated
 
-from account.extra import ContentTypeRestrictedFileField, OverwriteStorage, file_cleanup
+from account.extra import ContentTypeRestrictedFileField
+from tools.storage import OverwriteStorage, file_cleanup
 
 import os
 
-- 
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