[full-history]

* ChangeLog now uses ContentTypes
* added "commet" field
* fixed get_version() default "offset"
* more generic list_history()
* added get_all_models() function (work-in-progress)
* removed _get_first_revision()



git-svn-id: http://code.djangoproject.com/svn/django/branches/full-history@3422 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/history/models.py

@@ -1,18 +1,27 @@
 from django.db import models
-from django.db.models import signals
+from django.db.models import signals, get_models
 from django.dispatch import dispatcher
 from django.contrib.auth.models import User
+from django.contrib.contenttypes.models import ContentType
 from tut1.polls.models import Poll #Temp import of used models
 # Misc stuff
 import cPickle as Pickle
 from datetime import datetime
+from django.utils.text import capfirst
 #from django.contrib.history.api import get_object, save_new_revision
 
 class ChangeLog(models.Model):
     change_time = models.DateTimeField (_('time of change'), auto_now=True)
-    parent = models.ForeignKey(Poll)
+
+    content_type = models.ForeignKey(ContentType)
+    parent = models.GenericForeignKey()
+    object_id = models.IntegerField(_('object ID'))
+    #parent = models.ForeignKey(Poll)
+
     user = models.ForeignKey(User, default="1")
     object = models.TextField()
+    comment = models.CharField(maxlength=250, default="Bla")
+
     #object_type = models.CharField(maxlength=50)
     #pub_date = models.DateTimeField('date published')
     
@@ -23,11 +32,11 @@ class ChangeLog(models.Model):
 	
     class Admin:
 	fields = (
-	    ('Meta info', {'fields': ('change_time', 'parent', 'user',)}),
+	    ('Meta info', {'fields': ('change_time', 'content_type', 'object_id', 'user', 'comment'),}),
 	    ('Object', {'fields': ('object',),}),
 	)
 
-	list_display = ('parent', 'user', 'change_time')
+	list_display = ('object_id', 'user', 'change_time')
 
     def get_object(self):
 	""" Returns unpickled object. """
@@ -37,48 +46,87 @@ class ChangeLog(models.Model):
 	""" Returns the ID/revision number of ChangeLog entry. """
 	return self.id
 
-################
-# Other (API) methods
-################
+#######################
+# Other (API) methods #
+#######################
 
-def get_version(object, offset=1):
+def get_version(object, offset=0):
     """ Returns 'current-offset' revision of the 'object' """
-    list = ChangeLog.objects.order_by('-id').filter(parent=object.id)[offset]
+    list = ChangeLog.objects.order_by('-id').filter(object_id=object.id)[offset]
     print list.get_object()
     return list
 
-def list_history(parent_id, *args):
-    """ Returns a list of all revisions for that id. """
-    if args:
-	return ChangeLog.objects.filter(parent=parent_id)[:args[0]]
-	#print "extra"
-	#return ChangeLog.objects.filter(parent=parent_id)
+def list_history(parent_id, **kwargs):
+    """ 
+    list_history(parent_id): Returns a list of all revisions for that id.
+    list_history(parent_id, offset=X): Returns a list of last X revisions.    
+    """
+    if kwargs:
+	list = ChangeLog.objects.filter(object_id=parent_id)[:kwargs['offset']]
+	#for l in list:
+	#    print l.parent.id
+	return list
     else:
-	return ChangeLog.objects.filter(parent=parent_id)
+	return ChangeLog.objects.filter(object_id=parent_id)
+
+#def version(object, num=5):
+#    """ Returns last 'num' revisions of the 'object'. """
+#    return ChangeLog.objects.order_by('-id').filter(parent=object.id)[:num]
 
-def version(object, num=5):
-    """ Returns last 'num' revisions of the 'object'. """
-    return ChangeLog.objects.order_by('-id').filter(parent=object.id)[:num]
 
 def version_by_date(object, date):
     """ Returns a list of revisions made at 'date'. """
-    return ChangeLog.objects.filter(parent=object.id).filter(change_time__exact=date)
+    return ChangeLog.objects.filter(object_id=object.id).filter(change_time__exact=date)
 
 
+def get_all_models():
+    app_list = []
+    
+    for app in models.get_apps():
+	app_models = get_models(app)
+	app_label = app_models[0]._meta.app_label
+
+	model_list = []
+
+	for m in app_models:
+	    model_list.append({
+		    'name': capfirst(m._meta.verbose_name_plural),
+	    })
+
+	if model_list:
+	    model_list.sort()
+	    app_list.append({
+		    'name': app_label.title(),
+		    'models': model_list,
+            })
+
+    for app in app_list:
+	#print app['name']
+	#print app['models']
+	
+	for m in app['models']:
+	    print m['name']
+
+#########################
+# Pre-save signal catch #
+#########################
+
 def save_new_revision(sender, instance, signal, *args, **kwargs):
     """ Saves a old copy of the record into the History table."""
     #modelname = instance.__class__.__name__
     #print modelname
     old = Poll.objects.filter(pk=instance.id)
-    log = ChangeLog()
-    log.parent_id = instance.id
+    print old
+    if instance.History:
+	print "Admin"
+	print Poll._meta
+    print instance.id
+    log = ChangeLog(parent=instance)
+    print log
+    #log.parent_id = instance.id
     #log.user_id = .user_id
     log.object = Pickle.dumps(old[0], protocol=0)
     log.save()
     print "New change saved."
 
-def _get_first_revision(object):
-    pass
-
-
 dispatcher.connect( save_new_revision, signal=signals.pre_save, sender=Poll )