Python Flask全栈项目实战构建在线书店流程

bash
pip install flask flask_sqlalchemy flask_wtf flask_login

lua
/online_bookstore  
|-- /static  
|   |-- /css  
|   |-- /js  
|   |-- /images  
|-- /templates  
|   |-- index.html  
|   |-- login.html  
|   |-- register.html  
|   |-- books.html  
|-- /app.py  
|-- /models.py  
|-- /forms.py  
|-- /config.py

python
from flask_sqlalchemy import SQLAlchemy  
from flask_login import UserMixin  
from werkzeug.security import generate_password_hash, check_password_hash  
db = SQLAlchemy()  
class User(UserMixin, db.Model):  
    id = db.Column(db.Integer, primary_key=True)  
    username = db.Column(db.String(64), unique=True, nullable=False)  
    password_hash = db.Column(db.String(128), nullable=False)  
    books = db.relationship('Book', backref='user', lazy='dynamic')  
    def set_password(self, password):  
        self.password_hash = generate_password_hash(password)  
    def check_password(self, password):  
        return check_password_hash(self.password_hash, password)  
class Book(db.Model):  
    id = db.Column(db.Integer, primary_key=True)  
    title = db.Column(db.String(100), nullable=False)  
    author = db.Column(db.String(100), nullable=False)  
    year = db.Column(db.Integer, nullable=False)  
    genre = db.Column(db.String(50), nullable=False)  
    price = db.Column(db.Float, nullable=False)  
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))

python
from flask import Flask, render_template, redirect, url_for, flash, request  
from flask_sqlalchemy import SQLAlchemy  
from flask_login import LoginManager, login_user, logout_user, login_required, current_user  
from forms import RegistrationForm, LoginForm, BookForm  
from models import User, Book, db  
from werkzeug.security import generate_password_hash, check_password_hash  
from flask_login import login_required, current_user  
from flask_mail import Mail, Message  
import os  
from dotenv import load_dotenv # take environment variables from .env.  
load_dotenv() # taking environment variables from .env. file if present in the project root directory else ign