python 復(fù)制代碼運(yùn)行

from flask import Flask,render_template, request, redirect, url_for fromflask_s import S app =Flask(__name__) app.config['SE_URI']= 'sqlite:https:///credit_installment.db' db =S(app) class User(db.Model):id = db.Column(db.Integer,primary_key=True) username =db.Column(db.String(80), unique=True,nullable=False) password =db.Column(db.String(120), nullable=False)class LoanApplication(db.Model):id = db.Column(db.Integer,primary_key=True) user_id = db.Column(db.Integer,db.ForeignKey('user.id'), nullable=False)amount = db.Column(db.Float, nullable=False) term =db.Column(db.Integer, nullable=False) status =db.Column(db.String(20), nullable=False)@app.route('/')def index(): returnrender_template('index.html')@app.route('/login',methods=['POST']) deflogin(): username =re['username'] password =re['password'] user =User.(username=username, password=password).first()if user: returnredirect(url_for('loan_application'))else: return '用戶名或密碼錯誤'@app.route('/loan_application',methods=['GET', 'POST'])def loan_application(): ifre == 'POST': user_id =re['user_id'] amount =float(re['amount']) term =int(re['term']) application =LoanApplication(user_id=user_id, amount=amount, term=term,status='待審批') db.session.add(application)db.session.commit() return '貸款申請已提交，等待審批'else: returnrender_template('loan_application.html')if __name__ == '__main__':app.run(debug=True)