flask 数据库初体验 只接受post方法 不接受直接访问 在 Flask 的应用上下文 app_context() 调用 db.create_all()

from flask import Flask, render_template, request
from flask_sqlalchemy import SQLAlchemy

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

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(80), nullable=False)

@app.route('/form')
def form():
    return render_template('form.html')

# 只接受post方法 不接受直接访问
# Method Not Allowed The method is not allowed for the requested URL.
@app.route('/submit', methods=['POST'])
def submit():
    name = request.form['name']
    user = User(name=name)
    db.session.add(user)
    db.session.commit()
    return f'你好，{name}！已将你的姓名存入数据库。'

if __name__ == '__main__':
    # 在 Flask 的应用上下文 app_context() 调用 db.create_all()
    with app.app_context():
        db.create_all()
    app.run()

https://zhuanlan.zhihu.com/p/624750458