Add version string template tag.

babybuddy/__init__.py

@@ -50,3 +50,5 @@ __version__ = '0.1.0'
 __license__ = 'BSD 2-Clause'
 
 VERSION = __version__
+
+default_app_config = 'babybuddy.apps.BabyBuddyConfig'

babybuddy/apps.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import os
+
+from django.apps import AppConfig
+
+from babybuddy import VERSION
+
+
+class BabyBuddyConfig(AppConfig):
+    name = 'babybuddy'
+    verbose_name = 'Baby Buddy'
+    version = VERSION
+    version_string = VERSION
+
+    def ready(self):
+        if os.path.isfile('.git/refs/heads/master'):
+            commit = open('.git/refs/heads/master').read()
+            self.version_string += ' ({})'.format(commit[0:7])

babybuddy/templatetags/babybuddy_tags.py

@@ -2,6 +2,7 @@
 from __future__ import unicode_literals
 
 from django import template
+from django.apps import apps
 
 register = template.Library()
 
@@ -22,3 +23,14 @@ def relative_url(context, field_name, value):
         lambda p: p.split('=')[0] != field_name, querystring)
     encoded_querystring = '&'.join(filtered_querystring)
     return '{}&{}'.format(url, encoded_querystring)
+
+
+@register.simple_tag()
+def version_string():
+    """
+    Get Baby Buddy's current version string.
+
+    :return: version string ('n.n.n (commit)')
+    """
+    config = apps.get_app_config('babybuddy')
+    return config.version_string