Make hamlpy module a Django app which can be loaded to ensure that te…

…mplatize is patched

README.md

@@ -174,7 +174,17 @@ optional arguments:
 
 ### Create message files for translation
 
-Just include your Haml templates along with all the other files which contain translatable strings, e.g.
+HamlPy must first be included in Django's list of apps, i.e.
+
+```python
+INSTALLED_APPS = [
+  ...
+  'hamlpy'
+  ...
+]
+```
+
+Then just include your Haml templates along with all the other files which contain translatable strings, e.g.
 
 ```bash
 python manage.py makemessages --extension haml,html,py,txt

hamlpy/__init__.py

@@ -1,6 +1,18 @@
 from __future__ import unicode_literals
 
-__version__ = '1.0.1'
+from django.apps import AppConfig
 
+__version__ = '1.0.1'
 
 HAML_EXTENSIONS = ('haml', 'hamlpy')
+
+
+class Config(AppConfig):
+    name = 'hamlpy'
+
+    def ready(self):
+        # patch Django's templatize method
+        from .template import templatize  # noqa
+
+
+default_app_config = 'hamlpy.Config'

hamlpy/template/__init__.py

@@ -1,8 +1,6 @@
 from __future__ import unicode_literals
 
-# load templatize module to patch Django's templatize function
-from . import templatize  # noqa
-
 from .loaders import haml_loaders as _loaders
 
+
 locals().update(_loaders)

hamlpy/template/templatize.py

@@ -13,11 +13,11 @@
 from hamlpy.compiler import Compiler
 
 
-def decorate_templatize(func):
+def patch_templatize(func):
     def templatize(src, origin=None):
         # if the template has no origin then don't attempt to convert it because we don't know if it's Haml
         if origin:
-            extension = os.path.splitext(origin.name)[1][1:].lower()
+            extension = os.path.splitext(origin)[1][1:].lower()
 
             if extension in HAML_EXTENSIONS:
                 compiler = Compiler()
@@ -27,4 +27,4 @@ def templatize(src, origin=None):
     return templatize
 
 
-translation.templatize = decorate_templatize(translation.templatize)
+translation.templatize = patch_templatize(translation.templatize)

hamlpy/test/test_templatize.py

@@ -2,26 +2,29 @@
 
 import unittest
 
-from django.template.base import Origin
+from hamlpy import Config
 
 
 class TemplatizeTest(unittest.TestCase):
 
     def test_templatize(self):
+        # patching of Django's templatize happens when our app is loaded
+        Config.ready(None)
+
         from django.utils.translation import templatize
 
         # test regular Django tags
-        output = templatize('{% trans "Foo" %}{% blocktrans %}\nBar\n{% endblocktrans %}', origin=Origin('test.html'))
+        output = templatize('{% trans "Foo" %}{% blocktrans %}\nBar\n{% endblocktrans %}', origin='test.html')
         self.assertRegexpMatches(output, r"gettext\(u?'Foo'\)")
         self.assertRegexpMatches(output, r"gettext\(u?'\\nBar\\n'\)")
 
         # test Haml tags with HTML origin
-        output = templatize('- trans "Foo"\n- blocktrans\n  Bar\n', origin=Origin('test.haml'))
+        output = templatize('- trans "Foo"\n- blocktrans\n  Bar\n', origin='test.haml')
         self.assertRegexpMatches(output, r"gettext\(u?'Foo'\)")
         self.assertRegexpMatches(output, r"gettext\(u?'\\n  Bar\\n'\)")
 
         # test Haml tags and HTML origin
-        self.assertNotIn('gettext', templatize('- trans "Foo"\n- blocktrans\n  Bar\n', origin=Origin('test.html')))
+        self.assertNotIn('gettext', templatize('- trans "Foo"\n- blocktrans\n  Bar\n', origin='test.html'))
 
         # test Haml tags and no origin
         self.assertNotIn('gettext', templatize('- trans "Foo"\n- blocktrans\n  Bar\n'))