Add user last_seen

This will facilitate maintenance in the future. Running a script to clean the database from dead accounts will now be much easier

app/models.py

@@ -23,6 +23,7 @@ class User(UserMixin, db.Model):
     username = db.Column(db.String(64), index=True, unique=True)
     password_hash = db.Column(db.String(128))
     posts = db.relationship('Post', backref='author', lazy='dynamic')
+    last_seen = db.Column(db.DateTime, default=datetime.utcnow)
 
     def __repr__(self):
         return '<User {}>'.format(self.username)

app/routes.py

@@ -369,7 +369,10 @@ def login():
             flash('Invalid username or password')
             return redirect(url_for('login'))
         login_user(user, remember=form.remember_me.data)
+        current_user.last_seen = datetime.datetime.utcnow()
+        db.session.commit()
         next_page = request.args.get('next')
+        print(current_user.last_seen)
         if not next_page or url_parse(next_page).netloc != '':
             next_page = url_for('index')
         return redirect(next_page)
@@ -526,6 +529,7 @@ def register():
         return redirect(url_for('login'))
         
     return render_template('register.html', title='Register', registrations=REGISTRATIONS, form=form)
+        
 
 @app.route('/error/<errno>')
 def error(errno):