Enable auditing using django-reversion and django-reversion-compare

Collect history for changes, and allow browsing / reverting / comparison
within the admin interface.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>

README

@@ -27,6 +27,8 @@ In order to make use of this application you will need:
     building).
   * GitPython (python-git) version 0.3.1 or later
 * django-registration
+* django-reversion
+* django-reversion-compare
 
 Setup instructions:
 

TODO

@@ -7,7 +7,6 @@ TODO:
 - we might consider adding a link to the all layers and all recipes tables from the layer details page
 
 * Ensure publishing a published layer doesn't do anything
-* Auditing
 
 * Need an "About" section descriptibing what the site is for
 * Need an admin contact in footer

layerindex/admin.py

@@ -6,9 +6,22 @@
 
 from layerindex.models import *
 from django.contrib import admin
+from reversion_compare.admin import CompareVersionAdmin
 
-admin.site.register(LayerItem)
-admin.site.register(LayerMaintainer)
-admin.site.register(LayerDependency)
-admin.site.register(LayerNote)
+class LayerItemAdmin(CompareVersionAdmin):
+    """ Admin settings here """
+
+class LayerMaintainerAdmin(CompareVersionAdmin):
+    """ Admin settings here """
+
+class LayerDependencyAdmin(CompareVersionAdmin):
+    """ Admin settings here """
+
+class LayerNoteAdmin(CompareVersionAdmin):
+    """ Admin settings here """
+
+admin.site.register(LayerItem, LayerItemAdmin)
+admin.site.register(LayerMaintainer, LayerMaintainerAdmin)
+admin.site.register(LayerDependency, LayerDependencyAdmin)
+admin.site.register(LayerNote, LayerNoteAdmin)
 admin.site.register(Recipe)

settings.py

@@ -105,6 +105,7 @@ MIDDLEWARE_CLASSES = (
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
+    'reversion.middleware.RevisionMiddleware',
 )
 
 ROOT_URLCONF = 'urls'
@@ -128,7 +129,9 @@ INSTALLED_APPS = (
     # Uncomment the next line to enable admin documentation:
     # 'django.contrib.admindocs',
     'layerindex',
-    'registration'
+    'registration',
+    'reversion',
+    'reversion_compare'
 )
 
 # A sample logging configuration. The only tangible logging