models.py
=====
from flask_sqlalchemy import SQLAlchemy
from datetime import datetime
db = SQLAlchemy()
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(80), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
def __repr__(self):
return '%r>' % self.username
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(80), nullable=False)
body = db.Column(db.Text, nullable=False)
json = db.Column(db.JSON)
pub_date = db.Column(db.DateTime, nullable=False,
default=datetime.utcnow)
category_id = db.Column(db.Integer, db.ForeignKey('category.id'),
nullable=False)
category = db.relationship('Category',
backref=db.backref('posts', lazy=True))
def __repr__(self):
return '%r>' % self.title
class Category(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50), nullable=False)
def __repr__(self):
return '%r>' % self.name
app.py
======
from flask import Flask
# from flask_sqlalchemy import SQLAlchemy
from flask_admin import Admin
from flask_admin.contrib.sqla import ModelView
from models import db, User, Post, Category
app = Flask(__name__)
#app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql:///jack'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
# db = SQLAlchemy(app)
db.init_app(app)
admin = Admin(app, name='flask-sql', template_mode='bootstrap3')
admin.add_view(ModelView(User, db.session))
admin.add_view(ModelView(Post, db.session))
admin.add_view(ModelView(Category, db.session))
