posts-comments

app.py

from flask import Flask, render_template
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
db = SQLAlchemy(app)


class Post(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    title = db.Column(db.String(20), unique=True, nullable=False)    
    text = db.Column(db.String(140), unique=True, nullable=False)
    likes = db.Column(db.Integer)

    def __repr__(self):
        return '<Post %r>' % self.title

class Comment(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    text = db.Column(db.String(50), unique=True, nullable=False)
    post_id = db.Column(db.Integer, db.ForeignKey('post.id'), nullable=False)
    post = db.relationship('Post', backref=db.backref('comments', lazy=True))

    def __repr__(self):
        return '<Comment %r>' % self.text



@app.route('/posts', methods=['POST', 'GET'])
def posts():
    posts = Post.query.all()
    return render_template('index.html', posts=posts)



@app.route('/posts/<id:int>')
def post():
    posts = Post.query.get(id)
    return render_template('index.html', posts=posts)



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