SQLAlchemy’s filter_by takes keyword arguments: filter_by(**kwargs) In other words, the function will allow you to give it any keyword parameter. This is why you can use any keyword that you want in your code: SQLAlchemy basically sees the arguments a dictionary of values. See the Python tutorial for more information on keyword arguments. So that … Read more
Counting concurrently is hard. Assume the count is 0. If two users both hit the endpoint at close enough intervals, they may each get the value 0, increment it to 1, and put it back. Two users hit the endpoint, but the resulting count is 1, not 2. To get around this, you need to … Read more
I have read that mysqldb is not supported by python3 And it looks like when you are trying to connect to your database you are using mysql db to connect to the database by default! you need to change it by editing your DATABASE_URI configuration But before you need to install the connector extension : … Read more
I tried something, and it seems to work. I put preload_app = True in my gunicorn.conf and now the lock seems to be shared. I am still looking into exactly what’s happening here but for now this is good enough, YMMV.
Celery and RQ is overengineering for simple task. Take a look at this docs – https://docs.python.org/3/library/concurrent.futures.html Also check example, how to run long-running jobs in background for Flask app – https://stackoverflow.com/a/39008301/5569578
After I tried others suggestions and answers. Here’s what I use, which works. Steps: pip install flask flask-cors Copy and paste this in app.py file Code from flask import Flask, jsonify from flask_cors import CORS, cross_origin app = Flask(__name__) CORS(app, support_credentials=True) @app.route(“/login”) @cross_origin(supports_credentials=True) def login(): return jsonify({‘success’: ‘ok’}) if __name__ == “__main__”: app.run(host=”0.0.0.0″, port=8000, debug=True) … Read more
I haven’t used SQLAlchemy much so I figured I’d give it a shot. I didn’t try to use your models, I just wrote some new ones (similar enough though): likes = db.Table(‘likes’, db.Column(‘user_id’, db.Integer, db.ForeignKey(‘user.id’)), db.Column(‘post_id’, db.Integer, db.ForeignKey(‘post.id’)) ) class User(db.Model): id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(20)) def __repr__(self): return “<User(‘%s’)>” % self.username class … Read more
Have you tried import app.config as Config It did the trick for me.
The best way is to set static_url_path to root url from flask import Flask app = Flask(__name__, static_folder=”static”, static_url_path=””)
You can use ajax with Jquery. You can see this doc for more details. How to proceed: Configure js scripts In your HTML file template: Load Jquery: Load Jquery preferably before any other javascript files. Either statically: <script type=text/javascript src=”https://stackoverflow.com/questions/52870184/{{url_for(“static’, filename=”jquery.js”) }}”> </script> Or using Google’s AJAX Libraries API: <script src=”https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js”></script> <script>window.jQuery || document.write(‘<script src=”https://stackoverflow.com/questions/52870184/{{url_for(“static’, … Read more