Move DBModel._id -> DBModel.id

We were refering to model._id in most of the code base as this is
what Mongo uses. However, each use of _id required a) fixup of queries:
e.g. what we did in our find() and find_one() functions moving all
'_id' to 'id'. It also required using AliasFields to make the ._id
attribute available. This all means lots of superfluous fixing and
transitioning in a SQL world.

It will also not work in the long run. Much newer code already refers
to the objects by model.id (e.g. in the oauth plugin), which will break
with Mongo. So let's be honest, rip out the _id mongoism and live with
.id as the one canonical way to address objects.

This commit modifies all users and providers of model._id to use
model.id instead. This patch works with or without Mongo removed first,
but will break Mongo usage (even more than before)

I have not bothered to fixup db.mongo.* and db.sql.convert
(which converts from Mongo to SQL)

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>

mediagoblin/user_pages/lib.py

@@ -33,7 +33,7 @@ def send_comment_email(user, comment, media, request):
 
     comment_url = request.urlgen(
                     'mediagoblin.user_pages.media_home.view_comment',
-                    comment=comment._id,
+                    comment=comment.id,
                     user=media.get_uploader.username,
                     media=media.slug_or_id,
                     qualified=True) + '#comment'

mediagoblin/user_pages/views.py

@@ -53,7 +53,7 @@ def user_home(request, page):
             {'user': user})
 
     cursor = request.db.MediaEntry.find(
-        {'uploader': user._id,
+        {'uploader': user.id,
          'state': u'processed'}).sort('created', DESCENDING)
 
     pagination = Pagination(page, cursor)
@@ -196,12 +196,12 @@ def media_collect(request, media):
 
                 collection.description = unicode(
                         request.form.get('collection_description'))
-                collection.creator = request.user._id
+                collection.creator = request.user.id
                 collection.generate_slug()
 
                 # Make sure this user isn't duplicating an existing collection
                 existing_collection = request.db.Collection.find_one({
-                                        'creator': request.user._id,
+                                        'creator': request.user.id,
                                         'title': collection.title})
 
                 if existing_collection:
@@ -220,7 +220,7 @@ def media_collect(request, media):
             # Otherwise, use the collection selected from the drop-down
             else:
                 collection = request.db.Collection.find_one({
-                    '_id': request.form.get('collection')})
+                    'id': request.form.get('collection')})
                 collection_item.collection = collection.id
 
             # Make sure the user actually selected a collection
@@ -306,7 +306,7 @@ def media_confirm_delete(request, media):
                 location=media.url_for_self(request.urlgen))
 
     if ((request.user.is_admin and
-         request.user._id != media.uploader)):
+         request.user.id != media.uploader)):
         messages.add_message(
             request, messages.WARNING,
             _("You are about to delete another user's media. "
@@ -378,7 +378,7 @@ def collection_item_confirm_remove(request, collection_item):
                         collection=collection.slug)
 
     if ((request.user.is_admin and
-         request.user._id != collection_item.in_collection.creator)):
+         request.user.id != collection_item.in_collection.creator)):
         messages.add_message(
             request, messages.WARNING,
             _("You are about to delete an item from another user's collection. "
@@ -428,7 +428,7 @@ def collection_confirm_delete(request, collection):
                             collection=collection.slug)
 
     if ((request.user.is_admin and
-         request.user._id != collection.creator)):
+         request.user.id != collection.creator)):
         messages.add_message(
             request, messages.WARNING,
             _("You are about to delete another user's collection. "
@@ -456,7 +456,7 @@ def atom_feed(request):
         return render_404(request)
 
     cursor = request.db.MediaEntry.find({
-                 'uploader': user._id,
+                 'uploader': user.id,
                  'state': u'processed'}) \
                  .sort('created', DESCENDING) \
                  .limit(ATOM_DEFAULT_NR_OF_UPDATED_ITEMS)
@@ -524,7 +524,7 @@ def collection_atom_feed(request):
                'slug': request.matchdict['collection']})
 
     cursor = request.db.CollectionItem.find({
-                 'collection': collection._id}) \
+                 'collection': collection.id}) \
                  .sort('added', DESCENDING) \
                  .limit(ATOM_DEFAULT_NR_OF_UPDATED_ITEMS)
 
@@ -601,7 +601,7 @@ def processing_panel(request):
     #
     # Make sure we have permission to access this user's panel.  Only
     # admins and this user herself should be able to do so.
-    if not (user._id == request.user._id
+    if not (user.id == request.user.id
             or request.user.is_admin):
         # No?  Let's simply redirect to this user's homepage then.
         return redirect(
@@ -610,16 +610,16 @@ def processing_panel(request):
 
     # Get media entries which are in-processing
     processing_entries = request.db.MediaEntry.find(
-        {'uploader': user._id,
+        {'uploader': user.id,
          'state': u'processing'}).sort('created', DESCENDING)
 
     # Get media entries which have failed to process
     failed_entries = request.db.MediaEntry.find(
-        {'uploader': user._id,
+        {'uploader': user.id,
          'state': u'failed'}).sort('created', DESCENDING)
 
     processed_entries = request.db.MediaEntry.find(
-            {'uploader': user._id,
+            {'uploader': user.id,
                 'state': u'processed'}).sort('created', DESCENDING).limit(10)
 
     # Render to response