def topics(operation=None, topic_id=-1):
form = NewTopicForm(request.form)
if request.method == 'POST' and form.validate_on_submit():
topic = Topic(name=form.topic.data)
db.session.add(topic)
db.session.commit()
flash('New topic is created')
return redirect(url_for('topics'))
if operation == 'delete':
try:
topic = Topic().query.get(topic_id)
db.session.delete(topic)
db.session.commit()
except:
flash("Failed to delete topic {}.".format(topic_id))
return redirect(url_for('topics'))
if operation == 'update':
try:
topic = Topic().query.get(topic_id)
topic.name = request.values.get("value")
db.session.add(topic)
db.session.commit()
except:
return 'Error renaming topic.', 400
else:
return 'Topic updted successfuly.', 200
topics = Topic().query.all()
return render_template('topics.html',
title='Topics',
form=form,
topics=topics)
