feat: make package compatible with Django 2.1+

Author: santi

setup.py

@@ -2,7 +2,7 @@
 from setuptools import find_packages
 
 setup(name="django-sorl-cropping",
-    version="0.1.0",
+    version="0.1.1",
     description="A reusable app for cropping images easily and non-destructively in Django",
     long_description=open('README.rst').read(),
     author="Ilya Chistyakov",

sorl_cropping/widgets.py

@@ -49,23 +49,23 @@ class Media:
 
 
 class ImageCropWidget(AdminFileWidget, CropWidget):
-    def render(self, name, value, attrs=None):
+    def render(self, name, value, attrs=None, renderer=None):
         if not attrs:
             attrs = {}
         if value:
             attrs.update(get_attrs(value, name))
-        return super(AdminFileWidget, self).render(name, value, attrs)
+        return super(AdminFileWidget, self).render(name, value, attrs, renderer)
 
 
 class HiddenImageCropWidget(ImageCropWidget):
-    def render(self, name, value, attrs=None):
+    def render(self, name, value, attrs=None, renderer=None):
         if not attrs:
             attrs = {}
         # we need to hide it the whole field by JS because the admin
         # doesn't yet support hidden fields:
         # https://code.djangoproject.com/ticket/11277
         attrs['data-hide-field'] = True
-        return super(HiddenImageCropWidget, self).render(name, value, attrs)
+        return super(HiddenImageCropWidget, self).render(name, value, attrs, renderer)
 
 
 class CropForeignKeyWidget(ForeignKeyRawIdWidget, CropWidget):
@@ -85,7 +85,7 @@ def __init__(self, *args, **kwargs):
 
         super(CropForeignKeyWidget, self).__init__(*args, **kwargs)
 
-    def render(self, name, value, attrs=None):
+    def render(self, name, value, attrs=None, renderer=None):
         if attrs is None:
             attrs = {}
 
@@ -104,4 +104,4 @@ def render(self, name, value, attrs=None):
             except AttributeError:
                 logger.error("Object %s.%s doesn't have an attribute named '%s'." % (
                     app_name, model_name, self.field_name))
-        return super(CropForeignKeyWidget, self).render(name, value, attrs)
+        return super(CropForeignKeyWidget, self).render(name, value, attrs, renderer)