file organization

├── api
|   ├── __init__.py
|   ├── database.py
|   ├── views
|   |   └── user.py
│   ├── models
|       └── user.py
├── app.py
└── config.py

File creation

`init.py`


from flask import Flask
from api.database import db
from .views.user import user
import config

def create_app():
  
  app = Flask(__name__)

  #Read DB settings
  app.config.from_object('config.Config')
  db.init_app(app)
  
  app.register_blueprint(user, url_prefix='/user')

  return app
  
app = create_app()

`database.py`


from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()

def init_db(app):
  db.init_app(app)

`app.py`


from api import app

if __name__ == '__main__':
  app.run()

`config.py`


class SystemConfig:
  DEBUG = True

  SQLALCHEMY_DATABASE_URI = 'mysql+pymysql://{user}:{password}@{host}/{db-name}?charset=utf8'.format(**{
      'user': 'user',
      'password': 'password',
      'host': 'localhost',
      'db_name': 'sample'
  })

Config = SystemConfig

Creating a model

`/api/models/user.py`


from api.database import db

class User(db.Model):
    __tablename__ = 'users'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String)
    
    def searchBy(id):
        return db.session.query(User)\
            .filter(User.id == id)\
            .one()

Routing creation

`/api/views/user.py`


from flask import Blueprint
from api.models.user import User

# set route
user = Blueprint('user_router', __name__)

@job.route('/<int:id>', methods=['GET'])
def getUser(id):
    user = User.searchBy(id)
    print(user)