标签：dirname 需要 存在 html bst signature wait web im bool
邮件发送:
需要进行注册邮件发送或者功能模块需要发送邮件时可以采用:
from threading import Thread
from app import mail
from flask import current_app,render_template
from flask_mail import Message
‘‘‘开启异步线程‘‘‘
def send_async_mail(app,msg):
‘‘‘mail.send发送需要获取上下文,因此添加with‘‘‘
with app.app_context():
try:
mail.send(msg)
except Exception as e:
raise e
def send_mail(to, subject, template,**kwargs):
‘‘‘
发送邮件
:param to: 收件人
:param subject: 标题
:param template: 渲染模板
:param kwargs: 关键字参数
:return:
‘‘‘
msg = Message(‘[鱼书]‘+ ‘‘ +subject,
sender=current_app.config[‘MAIL_USERNAME‘],
recipients=[to])
msg.html = render_template(template,**kwargs)
‘‘‘
current_app是代理对象,开启新的线程时,我们直接获取真实的app核心对象_get_current_object()
‘‘‘
app = current_app._get_current_object()
thr = Thread(target=send_async_mail,args=[app,msg])
thr.start()状态标识
状态的变更需要进行标识时(等待,成功,拒绝,撤销)
from enum import Enum
class PendingStatus(Enum):
‘‘‘
交易状态: 枚举方法实现
‘‘‘
Waiting = 1
Success = 2
Reject = 3
Redraw = 4
@classmethod
def pending_str(cls,status,key):
key_map = {
cls.Waiting:{
‘requester‘:‘等待对方邮寄‘,
‘gifter‘:‘等待你邮寄‘
},
cls.Success: {
‘requester‘: ‘对方已邮寄‘,
‘gifter‘: ‘你已邮寄,交易完成‘
},
cls.Reject: {
‘requester‘: ‘对方已拒绝‘,
‘gifter‘: ‘你已经拒绝‘
},
cls.Redraw: {
‘requester‘: ‘你已撤销‘,
‘gifter‘: ‘对方已撤销‘
}
}
return key_map[status][key]模型定义的方法:
1 password以hash方式存储
2 用户信息生成token
3 password的私有化
from math import floor
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin
from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
from app.libs.enums import PendingStatus
from app.models.base import Base, db
from sqlalchemy import Column, Integer, String, Boolean, Float
from app import login_manager
from app.models.drift import Drift
from app.models.gift import Gift
from app.models.wish import Wish
from app.spider.yushu_book import YuShuBook
from app.libs.helper import is_isbn_or_key
from flask import current_app
class User(Base, UserMixin):
‘‘‘
模型属性设置 , UserMixin 记录用户账号的状态
‘‘‘
id = Column(Integer, primary_key=True)
nickname = Column(String(24), nullable=False)
_password = Column(‘password‘, String(128), nullable=True)
phone_number = Column(String(18), unique=True)
email = Column(String(50), unique=True, nullable=False)
confirmed = Column(Boolean, default=False)
beans = Column(Float, default=0)
send_counter = Column(Integer, default=0)
receive_counter = Column(Integer, default=0)
wx_open_id = Column(String(50))
wx_name = Column(String(32))
‘‘‘
将password方法hash加密只读并将其变为属性访问
‘‘‘
@property
def password(self):
return self._password
@password.setter
def password(self, raw):
self._password = generate_password_hash(raw)
def check_password(self, raw):
return check_password_hash(self._password, raw)
def generate_token(self, expiration=600):
s = Serializer(current_app.config[‘SECRET_KEY‘],expiration)
return s.dumps({‘id‘:self.id}).decode(‘utf-8‘)
@staticmethod
def reset_password(token,new_password):
s = Serializer(current_app.config[‘SECRET_KEY‘])
try:
data = s.loads(token.encode(‘utf-8‘))
except:
return False
uid = data.get(‘id‘)
with db.auto_commit():
user = User.query.get(uid)
if user:
user.password = new_password
return True
@property
def summary(self):
return dict(
nickname = self.nickname,
beans = self.beans,
email = self.email,
send_receive = str(self.send_counter)+ ‘/‘ + str(self.receive_counter)
)
@login_manager.user_loader
def get_user(uid):
‘‘‘
继承UserMixin,进行用户的回调
:param uid:
:return:
‘‘‘
return User.query.get(int(uid))
方案二
from app.extensions import db,login_manager
from werkzeug.security import generate_password_hash,check_password_hash
#生成token的模块
from itsdangerous import TimedJSONWebSignatureSerializer as Seralize
from flask_login import UserMixin
from flask import current_app
from .posts import Posts
class User(UserMixin,db.Model):
__tablename__ = ‘user‘
id = db.Column(‘id‘,db.Integer,primary_key=True)
username = db.Column(db.String(12),index=True)
password_hash = db.Column(db.String(128))
sex = db.Column(db.Boolean,default=True)
age = db.Column(db.Integer)
email = db.Column(db.String(40))
icon = db.Column(db.String(70),default=‘default.jpg‘)
#当期账户激活状态
confirm = db.Column(db.Boolean,default=False)
#参数1模型名称 参数2反向引用的字段名 参数3 加载方式 提供对象
posts = db.relationship(‘Posts‘,backref=‘user‘,lazy=‘dynamic‘)
#secondary在多对多关系中指定关联表的名称
favorite = db.relationship(‘Posts‘,secondary=‘collections‘,backref=db.backref(‘users‘,lazy=‘dynamic‘),lazy=‘dynamic‘)
#添加使用append 删除使用remove
@property
def password(self):
raise ValueError
@password.setter
def password(self, password):
self.password_hash = generate_password_hash(password)
#生成token的方法
def generate_token(self):
s = Seralize(current_app.config[‘SECRET_KEY‘])
return s.dumps({‘id‘:self.id})
#检测token的方法
@staticmethod
def check_token(token):
s = Seralize(current_app.config[‘SECRET_KEY‘])
#从当前的token中拿出字典
try:
id = s.loads(token)[‘id‘]
except:
return False
#根据用户id取出对应用户的对象
u = User.query.get(id)
#判断 当期u对象是否存在
if not u:
return False
#判断当期用户的激活状态 如果没有激活 则激活
if not u.confirm:
u.confirm = True
db.session.add(u)
return True
#验证密码
def check_password_hash(self,password):
return check_password_hash(self.password_hash,password)
def is_favorite(self,postsId):
all = self.favorite.all()
for p in all:
if p.id==postsId:
return True
#lambda表达式
if list(filter(lambda p:p.id==int(postsId),all)):
return True
return False
#登录认证的回调,保持数据的一致性
@login_manager.user_loader
def user_loader(uid):
return User.query.get(int(uid))1
extensions.py负责三方模块的导入与2
app.__init__.py负责create_app初始化3
view.__init__.py负责蓝本的注册
方案一:
manage.py
from app import create_app
from flask_script import Manager
from flask_migrate import MigrateCommand
#通过函数create_app进行包括蓝本/扩展/系统配置的初始化
app = create_app(‘default‘)
manager = Manager(app)
#给manage添加迁移命令db
manager.add_command(‘db‘,MigrateCommand)
if __name__ == ‘__main__‘:
manager.run()
extensions.py
#extensions.py
from flask_bootstrap import Bootstrap
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from flask_mail import Mail
from flask_login import LoginManager
from flask_uploads import UploadSet,IMAGES,patch_request_class,configure_uploads
from flask_moment import Moment
from flask_cache import Cache
#实例化db
db = SQLAlchemy()
#实例化bootstrap
bootstrap = Bootstrap()
#实例化migrate
migrate = Migrate(db=db)
#实例化邮箱
mail = Mail()
#实例化用户登录模块
login_manager = LoginManager()
#实例化文件对象
file = UploadSet(‘photos‘,IMAGES)
moment = Moment()
#simple简单缓存
# cache = Cache(config={‘CACHE_TYPE‘:‘simple‘})
cache = Cache(config={‘CACHE_TYPE‘: ‘simple‘})
def config_extensions(app):
#bootstrap初始化app
bootstrap.init_app(app)
#db初始化app
db.init_app(app)
#migrate初始化app
migrate.init_app(app=app)
#mail初始化
mail.init_app(app)
#登录模块初始化
login_manager.init_app(app)
#moment时间模块初始化
moment.init_app(app)
cache.init_app(app=app)
#需要指定登录端点
login_manager.login_view =‘user.login‘
#提示信息
login_manager.login_message = ‘请登录再访问‘
#设置session保护级别
login_manager.session_protection = ‘strong‘
#配置文件上传
configure_uploads(app,file)
patch_request_class(app,size=None)
app.__init__.py
#app.__init__.py
from flask import Flask,render_template
from app.settings import config
from app.extensions import config_extensions
from app.views import config_blueprint
#初始化当前整个应用的函数
def create_app(config_name):
app = Flask(__name__)
#导入settings配置信息
app.config.from_object(config[config_name])
#第三方库初始化
config_extensions(app)
#注册所有的蓝本函数
config_blueprint(app)
#错误页面绑定app
errors(app)
return app
def errors(app):
@app.errorhandler(404)
def page_not_found(e):
return render_template(‘errors/error.html‘,error=e)
@app.errorhandler(500)
def page_not_found(e):
return render_template(‘errors/error.html‘, error=e)view.__init__.py
#view.__init__.py
from .main import main
from .user import user
from .posts import posts
BluePrint = [
(main,‘‘),
(user,‘‘),
(posts,‘‘)
]
#封装注册蓝本的函数
def config_blueprint(app):
#循环注册蓝本
for blueprint,prefix in BluePrint:
app.register_blueprint(blueprint,url_prefix=prefix)方案二
fisher.py
from app import create_app
app = create_app()
if __name__ == ‘__main__‘:
from werkzeug.contrib.fixers import ProxyFix
app.wsgi_app = ProxyFix(app.wsgi_app)
app.run()app.__init__.py
#app.__init__.py
‘‘‘创建flask核心对象‘‘‘
from flask import Flask
from app.models.base import db
from flask_login import LoginManager
from flask_mail import Mail
from app.libs.limiter import Limiter
login_manager = LoginManager()
mail = Mail()
limiter = Limiter()
def create_app():
‘‘‘
系统配置与蓝图需要绑定app
:return:
‘‘‘
app = Flask(__name__)
app.config.from_object(‘app.secure‘)
app.config.from_object(‘app.setting‘)
register_blueprint(app)
db.init_app(app)
login_manager.init_app(app)
login_manager.login_view = ‘web.login‘
login_manager.login_message = ‘请先登录或者注册‘
mail.init_app(app)
with app.app_context():
db.create_all()
return app
#注册蓝本
def register_blueprint(app):
from app.web.book import web
app.register_blueprint(web)view.__init__.py
#view.__init__.py
from flask import Blueprint,render_template
‘‘‘蓝图 blueprint ‘‘‘
web = Blueprint(‘web‘,__name__) #__name__代表蓝图所在模块
@web.app_errorhandler(404)
def not_found(e):
‘‘‘
AOP: 处理所有的404请求
‘‘‘
return render_template(‘404.html‘),404
@web.app_errorhandler(500)
def internal_server_error(e):
‘‘‘
AOP: 处理所有的500请求
‘‘‘
return render_template(‘500.html‘),500
#在此处导入代表先初始化在导入应用
#防止循环调用的问题
from app.web import book
from app.web import auth
from app.web import drift
from app.web import gift
from app.web import main
from app.web import wishsettings配置
1 根据不同等级,配置系统设置
2 配置数据库的连接
3 配置不同环境下的生产
方案一
import os
base_path = os.path.abspath(os.path.dirname(__file__))
#配置所有环境的基类
class Config:
SECRET_KEY = ‘secret_key‘
SQLALCHEMY_COMMIT_ON_TEARDOWN = True
SQLALCHEMY_TRACK_MODIFICATIONS = False
MAIL_SERVER = os.environ.get(‘MAIL_SERVER‘, ‘smtp.163.com‘)
MAIL_USERNAME = os.environ.get(‘MAIL_USERNAME‘, ‘xxx@163.com‘)
MAIL_PASSWORD = os.environ.get(‘MAIL_PASSWORD‘, ‘xxx‘)
#配置上传文件
MAX_CONTENT_LENGTH = 1024*1024*64
UPLOADED_PHOTOS_DEST = os.path.join(base_path,‘static/upload‘)
PAGE_NUM = 3
#测试
class TestingConfig(Config):
SQLALCHEMY_DATABASE_URI = ‘mysql+pymysql://root:xxx@127.0.0.1:3306/blog‘
#开发
class DevelopmentConfig(Config):
SQLALCHEMY_DATABASE_URI = ‘mysql+pymysql://root:xxx@127.0.0.1:3306/blog‘
# SQLALCHEMY_DATABASE_URI = ‘sqlite:///‘+ os.path.join(base_path,‘develop.sqlite‘)
#生产
class ProductionConfig(Config):
SQLALCHEMY_DATABASE_URI = ‘mysql+pymysql://root:xxx@127.0.0.1:3306/blog‘
#设置字典
config = {
‘development‘:DevelopmentConfig,
‘production‘:ProductionConfig,
‘test‘:TestingConfig,
‘default‘:DevelopmentConfig
}方案二
settings.py
‘‘‘
配置文件: 生产环境与开发环境相同的配置,setting可以上传git
‘‘‘
PER_PAGE = 15
BEANS_UPLOAD_ONE_BOOK = 0.5
RECENT_BOOK_COUNT = 20secure.py
‘‘‘
配置文件:保存单独的加密信息,secure不要上传git
‘‘‘
DEBUG = True
# 单数据库
SQLALCHEMY_DATABASE_URI = ‘mysql+cymysql://root:xxx@xxx:3306/fisher‘
SECRET_KEY = ‘\SAAFsdfsdf:sdadzxcsd,./.dasdafasd‘
#Email相关配置
MAIL_SERVER = ‘smtp.163.com‘
MAIL_PORT = 465
MAIL_USE_SSL = True
MAIL_USE_TSL = False
MAIL_USERNAME = ‘xxx@163.com‘
MAIL_PASSWORD = ‘xxx‘def calulate_start(self,page):
return (page-1)* current_app.config.get(‘PER_PAGE‘)模型类的设置
1 创建基类继承db.Model
2 db实例化通过继承添加容错自动提交数据库功能
3 封装了快速设置属性功能
base.py
from flask_sqlalchemy import SQLAlchemy as _SQLAlchemy, BaseQuery
from sqlalchemy import Column, Integer, SmallInteger
from contextlib import contextmanager
from datetime import datetime
class SQLAlchemy(_SQLAlchemy):
‘‘‘
封装了数据库的自动提交回滚
‘‘‘
@contextmanager
def auto_commit(self):
try:
yield
self.session.commit()
except Exception as e:
self.session.rollback()
raise e
class Query(BaseQuery):
‘‘‘
自定义基类(继承,初始化),重写filter_by方法
‘‘‘
def filter_by(self, **kwargs):
if ‘status‘ not in kwargs.keys():
kwargs[‘status‘] = 1
return super(Query, self).filter_by(**kwargs)
db = SQLAlchemy(query_class=Query)
class Base(db.Model):
‘‘‘
该模型表不想在数据库创建,添加__abstract__ = True不会创建该表
‘‘‘
__abstract__ = True
‘‘‘类变量在类开始的时候就已经确定了‘‘‘
create_time = Column(‘create_time‘, Integer)
status = Column(SmallInteger, default=1)
def __init__(self):
‘‘‘实例变量保证创建时间的准确性‘‘‘
self.create_time = int(datetime.now().timestamp())
def delete(self):
self.status = 0
def set_attrs(self, attrs_dict):
for key, value in attrs_dict.items():
if hasattr(self, key) and key != ‘id‘:
setattr(self, key, value)
@property
def create_datetime(self):
‘‘‘时间格式统一,将方法转换成属性调用‘‘‘
if self.create_time:
return datetime.fromtimestamp(self.create_time)
else:
return None标签：dirname 需要 存在 html bst signature wait web im bool
原文地址：https://www.cnblogs.com/why957/p/9285838.html
