Pass the compressor class as the sender to the post_compress signal, not the rather generic string named 'django-compressor'.

compressor/base.py

@@ -266,6 +266,7 @@ class Compressor(object):
         self.context['compressed'].update(context or {})
         self.context['compressed'].update(self.extra_context)
         final_context = Context(self.context)
+        post_compress.send(sender=self.__class__, type=self.type,
                            mode=mode, context=final_context)
         return render_to_string("compressor/%s_%s.html" %
                                 (self.type, mode), final_context)

docs/changelog.txt

@@ -38,6 +38,10 @@ v1.2.0
   if the YUI compressor is shipped as a script like
   ``/usr/bin/yui-compressor``.
 
+- Changed the sender parameter of the :func:`~compressor.signals.post_compress`
+  signal to be either :class:`compressor.css.CssCompressor` or
+  :class:`compressor.js.JsCompressor` for easier customization.
+
 v1.1.1
 ------
 

docs/usage.txt

@@ -165,7 +165,14 @@ you need the exact filenames for use in an HTML5 manifest file.  The signal
 sends the following arguments:
 
 ``sender``
-    Always "django-compressor".
+    Either :class:`compressor.css.CssCompressor` or
+    :class:`compressor.js.JsCompressor`.
+
+    .. versionchanged:: 1.2
+
+    The sender is now one of the supported Compressor classes for
+    easier limitation to only one of them, previously it was a string
+    named ``'django-compressor'``.
 
 ``type``
     Either "``js``" or "``css``".
@@ -177,21 +184,23 @@ sends the following arguments:
     The context dictionary used to render the output of the compress template
     tag.
 
-    If ``mode`` is "``file``", this will contain a "``url``" key that maps to
+    If ``mode`` is "``file``" the dictionary named ``compressed`` in the
-    the relative URL for the compressed asset.  
+    context will contain a "``url``" key that maps to the relative URL for
+    the compressed asset.
 
-    If ``type`` is "``css``", the context will additionally contain a
+    If ``type`` is "``css``", the dictionary named ``compressed`` in the
-    "``media``" key with a value of ``None`` if no media attribute is specified on
+    context will additionally contain a "``media``" key with a value of
-    the link/style tag and equal to that attribute if one is specified.  
+    ``None`` if no media attribute is specified on the link/style tag and
+    equal to that attribute if one is specified.
 
-    Additionally, ``context['name']`` will be the third positional argument to
+    Additionally, ``context['compressed']['name']`` will be the third
-    the template tag, if provided.
+    positional argument to the template tag, if provided.
 
 .. note::
 
     When compressing CSS, the ``post_compress`` signal will be called once for
-    every different media attribute on the tags within the ``{% compress %}`` tag
+    every different media attribute on the tags within the ``{% compress %}``
-    in question.
+    tag in question.
 
 CSS Notes
 ---------

tests/tests/signals.py

@@ -34,7 +34,7 @@ class PostCompressSignalTestCase(TestCase):
         post_compress.connect(callback)
         self.js_node.output()
         args, kwargs = callback.call_args
-        self.assertEquals('django-compressor', kwargs['sender'])
+        self.assertEquals(JsCompressor, kwargs['sender'])
         self.assertEquals('js', kwargs['type'])
         self.assertEquals('file', kwargs['mode'])
         context = kwargs['context']
@@ -47,7 +47,7 @@ class PostCompressSignalTestCase(TestCase):
         post_compress.connect(callback)
         self.css_node.output()
         args, kwargs = callback.call_args
-        self.assertEquals('django-compressor', kwargs['sender'])
+        self.assertEquals(CssCompressor, kwargs['sender'])
         self.assertEquals('css', kwargs['type'])
         self.assertEquals('file', kwargs['mode'])
         context = kwargs['context']