forum: decrease XP when deleting posts (+penalty)

app/routes/posts/edit.py

@@ -1,4 +1,5 @@
 from app import app, db
+from app.models.user import Member
 from app.models.post import Post
 from app.models.attachment import Attachment
 from app.utils.render import render
@@ -69,6 +70,11 @@ def delete_post(postid):
     if current_user.is_anonymous or not current_user.can_delete_post(p):
         abort(403)
 
+    if isinstance(p.author, Member):
+        amount = -3 if request.args.get('penalty') == 'True' else -1
+        p.author.add_xp(amount)
+        db.session.add(p.author)
+
     p.delete()
     db.session.commit()
     return redirect(request.referrer)