August 2018
Intermediate to advanced
230 pages
6h 42m
Chinese
Content preview from Flask Web开发：基于Python的Web应用开发实战（第2版）
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用户身份验证
｜
81
app/auth/views.py
模块导入蓝本，然后使用蓝本的 route 装饰器定义与身份验证相关的路
由，如示例
8-4
所示。这段代码添加了一个
/login
路由，渲染同名占位模板。
示例
8-4
app/auth/views.py
：身份验证蓝本中的路由和视图函数
from flask import render_template
from . import auth
@auth.route('/login')
def login():
return render_template('auth/login.html')
注意，为
render_template()
指定的模板文件保存在
auth
目录中。这个目录必须在
app/
templates
中创建，因为
Flask
期望模板的路径是相对于应用的模板目录而言的。把蓝本中
用到的模板放在单独的子目录中，能避免与
main
蓝本或以后添加的蓝本发生冲突。
我们也可以配置蓝本使用专门的目录保存模板。如果配置了多个模板目录，
那么
render_template()
函数会先搜索应用的模板目录，然后再搜索蓝本的
模板目录。
auth 蓝本要在 create_app() 工厂函数中附加到应用上，如示例
8-5
所示。
示例
8-5
app/__init__.py
：注册身份验证蓝本
def create_app(config_name):
# ...
from .auth import auth as auth_blueprint
app.register_blueprint(auth_blueprint, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.