Split device template filter into two extra template filters

.gitignore

@@ -1,3 +1,4 @@
+.idea/
 /example/database.sqlite3
 /example/GeoLiteCity.dat
 /django_user_sessions.egg-info/

user_sessions/templatetags/user_sessions.py

@@ -15,7 +15,7 @@
     (re.compile('Opera'), _('Opera')),
     (re.compile('IE'), _('Internet Explorer')),
 )
-DEVICES = (
+PLATFORMS = (
     (re.compile('Windows Mobile'), _('Windows Mobile')),
     (re.compile('Android'), _('Android')),
     (re.compile('Linux'), _('Linux')),
@@ -40,43 +40,80 @@
 
 
 @register.filter
-def device(value):
+def platform(value):
     """
     Transform a User Agent into human readable text.
 
     Example output:
 
-    * Safari on iPhone
-    * Chrome on Windows 8.1
-    * Safari on macOS
-    * Firefox
+    * iPhone
+    * Windows 8.1
+    * macOS
     * Linux
     * None
     """
 
+    platform = None
+    for regex, name in PLATFORMS:
+        if regex.search(value):
+            platform = name
+            break
+
+    return platform
+
+
+@register.filter
+def browser(value):
+    """
+    Transform a User Agent into human readable text.
+
+    Example output:
+
+    * Safari
+    * Chrome
+    * Safari
+    * Firefox
+    * None
+    """
+
     browser = None
     for regex, name in BROWSERS:
         if regex.search(value):
             browser = name
             break
 
-    device = None
-    for regex, name in DEVICES:
-        if regex.search(value):
-            device = name
-            break
+    return browser
+
+
+@register.filter
+def device(value):
+    """
+    Transform a User Agent into human readable text.
+
+    Example output:
+
+    * Safari on iPhone
+    * Chrome on Windows 8.1
+    * Safari on macOS
+    * Firefox
+    * Linux
+    * None
+    """
+
+    browser_ = browser(value)
+    platform_ = platform(value)
 
-    if browser and device:
+    if browser_ and platform_:
         return _('%(browser)s on %(device)s') % {
-            'browser': browser,
-            'device': device
+            'browser': browser_,
+            'device': platform_
         }
 
-    if browser:
-        return browser
+    if browser_:
+        return browser_
 
-    if device:
-        return device
+    if platform_:
+        return platform_
 
     return None