Fixed Django 1.10 deprecation warnings described in jazzband#586

Author: Austin Pua

pipeline/collector.py

@@ -4,6 +4,7 @@
 
 from collections import OrderedDict
 
+import django
 from django.contrib.staticfiles import finders
 from django.contrib.staticfiles.storage import staticfiles_storage
 from django.utils import six
@@ -19,6 +20,11 @@ def __init__(self, storage=None):
             storage = staticfiles_storage
         self.storage = storage
 
+    def _get_modified_time(self, storage, prefixed_path):
+        if django.VERSION[:2] >= (1, 10):
+            return storage.get_modified_time(prefixed_path)
+        return storage.modified_time(prefixed_path)
+
     def clear(self, path=""):
         dirs, files = self.storage.listdir(path)
         for f in files:
@@ -65,14 +71,14 @@ def delete_file(self, path, prefixed_path, source_storage):
         if self.storage.exists(prefixed_path):
             try:
                 # When was the target file modified last time?
-                target_last_modified = self.storage.modified_time(prefixed_path)
+                target_last_modified = self._get_modified_time(self.storage, prefixed_path)
             except (OSError, NotImplementedError, AttributeError):
                 # The storage doesn't support ``modified_time`` or failed
                 pass
             else:
                 try:
                     # When was the source file modified last time?
-                    source_last_modified = source_storage.modified_time(path)
+                    source_last_modified = self._get_modified_time(source_storage, prefixed_path)
                 except (OSError, NotImplementedError, AttributeError):
                     pass
                 else: