Flask with MongoDB how to setup and Create Read Update Delete (CRUD) methods

Flask with MongoDB how to setup and Create Read Update Delete (CRUD) methods

MongoDB is a popular database, but unlike other databases it’s classified as a NoSQL database program (MongoDB uses JSON-like documents with schema).

ModuleNotFoundError: No module named 'flask_mongoengine'

install module

(venv) C:\flaskmyproject>pip install flask-mongoengine

create file app.py

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#app.py import json from flask import Flask, request, jsonify from flask_mongoengine import MongoEngine #ModuleNotFoundError: No module named 'flask_mongoengine' = (venv) C:\flaskmyproject>pip install flask-mongoengine   app = Flask(__name__) app.config['MONGODB_SETTINGS'] = {     'db': 'dbtestmongo',     'host': 'localhost',     'port': 27017 } db = MongoEngine() db.init_app(app)   class User(db.Document):     name = db.StringField()     email = db.StringField()     def to_json(self):         return {"name": self.name,                 "email": self.email}   @app.route('/') def query_records():     name = 'tutorial101'     user = User.objects(name=name).first()     if not user:         return jsonify({'error': 'data not found'})     else:         return jsonify(user.to_json())   @app.route('/add') def create_record():     user = User(name='Caite',                 email='caite@gmail.com')     user.save()     return jsonify(user.to_json())   @app.route('/update') def update_record():     name = 'tutorial101'     user = User.objects(name=name).first()     if not user:         return jsonify({'error': 'data not found'})     else:         user.update(email='emailupdate@gmail.com')     return jsonify(user.to_json())       @app.route('/delete') def delete_record():     name = 'tutorial101'     user = User.objects(name=name).first()     if not user:         return jsonify({'error': 'data not found'})     else:         user.delete()     return jsonify(user.to_json())       if __name__ == "__main__":     app.run(debug=True)