How to add a counter using Flask?

Question

Flask

How to add a counter using Flask? Maybe there are useful articles or someone knows an example?

Answer 1

If by clever flask-redis, and very little js/jquery
code Dig in that direction. In principle, you can also sql

@app.route('/comment/<int:id>/like', methods=["POST"])
@login_required
def comment_like(id):
    comment = Comment.query.get_or_404(id)
    comment.like += 1
    db.session.add(comment)
    db.session.commit()
    return jsonify({'likes': comment.like})

Well, you make buttons
And you hang up the handler,

$('.like-button').onclick(
  ...
  //Post запрос по url, из  data-id
$.ajax({
  type: 'POST',
  url: "/comment/"+data-id+"/like",
  data: data
});
 // если удался меняем innerhtml