port to new django, AI automated

imagestore/utils.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+
+__author__ = 'zeus'
+
+import os
+import uuid
+from django.core.exceptions import ImproperlyConfigured
+from django.utils.importlib import import_module
+from django.conf import settings
+
+UPLOAD_TO = getattr(settings, 'IMAGESTORE_UPLOAD_TO', 'imagestore/')
+
+def load_class(class_path, setting_name=None):
+    """
+    Loads a class given a class_path.
+    The setting_name parameter is only there for pretty error output, and
+    therefore is optional
+
+    Taken from https://github.com/divio/django-shop/blob/master/shop/util/loader.py
+    """
+    try:
+        class_module, class_name = class_path.rsplit('.', 1)
+    except ValueError:
+        if setting_name:
+            txt = '%s isn\'t a valid module. Check your %s setting' % (class_path,setting_name)
+        else:
+            txt = '%s isn\'t a valid module.' % class_path
+        raise ImproperlyConfigured(txt)
+
+    try:
+        mod = import_module(class_module)
+    except ImportError, e:
+        if setting_name:
+            txt = 'Error importing backend %s: "%s". Check your %s setting' % (class_module, e, setting_name)
+        else:
+            txt = 'Error importing backend %s: "%s".' % (class_module, e)
+        raise ImproperlyConfigured(txt)
+
+    try:
+        clazz = getattr(mod, class_name)
+    except AttributeError, e:
+        if setting_name:
+            txt = 'Backend module "%s" does not define a "%s" class. Check your %s setting. (%s)' % (class_module, class_name, setting_name)
+        else:
+            txt = 'Backend module "%s" does not define a "%s" class. (%s)' % (class_module, class_name, e)
+        raise ImproperlyConfigured(txt)
+    return clazz
+
+def get_model_string(model_name):
+    """
+    Returns the model string notation Django uses for lazily loaded ForeignKeys
+    (eg 'auth.User') to prevent circular imports.
+    This is needed to allow our crazy custom model usage.
+
+    Taken from https://github.com/divio/django-shop/blob/master/shop/util/loader.py
+    """
+    class_path = getattr(settings, 'IMAGESTORE_%s_MODEL' % model_name.upper().replace('_', ''), None)
+    if not class_path:
+        return 'imagestore.%s' % model_name
+    else:
+        klass = load_class(class_path)
+        return '%s.%s' % (klass._meta.app_label, klass.__name__)
+
+def get_file_path(instance, filename):
+    ext = filename.split('.')[-1]
+    filename = "%s.%s" % (uuid.uuid4(), ext)
+    return os.path.join(UPLOAD_TO, filename)