昨日回顾
>pip freeze >requirement.txt
>pip install -r requirement.txt -i 豆瓣源
>使用whl文件装,windows上你装的模块,都是 xxx.whl文件
-直接去网站搜:https://www.lfd.uci.edu/~gohlke/pythonlibs/
-指定版本和平下载Twisted‑20.3.0‑cp36‑cp36m‑win_amd64.whl
-cmd下:pip3 install 文件的路径
>pip download -r requirement.txt -d "D:pipDownloadTest"
>切换终端在待安装文件目录下(D:pipDownloadTest)
pip install PyMySQL-0.9.3-py2.py3-none-any.whl
-因为机器上多个程序依赖的第三方模块不一样,版本不一样
-pip3 install virtualenv
-pip3 install virtualenvwrapper-win
-
-配置环境变量,执行以下bat,让你配置的生效
-workon 虚拟环境
-mkvirtualenv -p python3.6 虚拟环境名称
-deactivate
-rmvirtualenv 虚拟环境名称
├── luffyapi
├── logs/
├── manage.py
├── luffyapi/
├── apps/
├── libs/
├── settings/
├── dev.py
└── prod.py
├── urls.py
└── utils/
└── scripts/
-创建app,需要到apps目录下创建 python ../../manage.py startapp user
-luffyapi--》下的luffyapi也加入到了环境变量,以后导入模块,从luffyapi--》下的luffyapi开始导入即可,pycharm会飘红,右键变成source
-在setting中注册前,要把apps的路径加入到环境变量
-创建了一个用户,授予了某个数据库的权限,给他设了一个秘密
grant all privileges on luffy.* to 'luffy'@'%' identified by 'Luffy123?';
grant all privileges on luffy.* to 'luffy'@'localhost' identified by 'Luffy123?';
-在setting中配置
-继承AbstractUser,要在执行迁移命令之前完成
-mvvm架构:M:script里写的东西 vm:viewmodel v:template, 数据驱动页面
-单页面开发:以后只需要写xx.vue组件:小组件和页面组件
今日内容
1 后台Response和异常和日志封装
from rest_framework.response import Response
class APIResponse(Response):
def __init__(self,code=1,msg='成功',result=None,status=None,headers=None,content_type=None,**kwargs):
dic={
'code':code,
'msg':msg
}
if result:
dic['result']=result
dic.update(kwargs)
super().__init__(data=dic,status=status,headers=headers,content_type=content_type)
from rest_framework.views import exception_handler
from .response import APIResponse
from .logger import log
def common_exception_handler(exc, context):
log.error('view是:%s ,错误是%s'%(context['view'].__class__.__name__,str(exc)))
print(context['view'].__class__.__name__)
ret=exception_handler(exc, context)
if not ret:
if isinstance(exc,KeyError):
return APIResponse(code=0, msg='key error')
return APIResponse(code=0,msg='error',result=str(exc))
else:
return APIResponse(code=0,msg='error',result=ret.data)
封装logger
LOGGING = {
'version': 1,
'disable_existing_loggers': False,
'formatters': {
'verbose': {
'format': '%(levelname)s %(asctime)s %(module)s %(lineno)d %(message)s'
},
'simple': {
'format': '%(levelname)s %(module)s %(lineno)d %(message)s'
},
},
'filters': {
'require_debug_true': {
'()': 'django.utils.log.RequireDebugTrue',
},
},
'handlers': {
'console': {
'level': 'DEBUG',
'filters': ['require_debug_true'],
'class': 'logging.StreamHandler',
'formatter': 'simple'
},
'file': {
'level': 'INFO',
'class': 'logging.handlers.RotatingFileHandler',
'filename': os.path.join(os.path.dirname(BASE_DIR), "logs", "luffy.log"),
'maxBytes': 300 * 1024 * 1024,
'backupCount': 100,
'formatter': 'verbose',
'encoding': 'utf-8'
},
},
'loggers': {
'django': {
'handlers': ['console', 'file'],
'propagate': True,
},
}
}
log日志文件
import logging
log = logging.getLogger('django')
from luffyapi.utils.logger import log
log.info('xxxxxx')
2 跨域问题及解决
只要同时满足以下两大条件,就属于简单请求
(1) 请求方法是以下三种方法之一:
HEAD
GET
POST
(2)HTTP的头信息不超出以下几种字段:
Accept
Accept-Language
Content-Language
Last-Event-ID
Content-Type:只限于三个值application/x-www-form-urlencoded、multipart/form-data、text/plain
class MyMiddle(MiddlewareMixin):
def process_response(self, request, response):
response['Access-Control-Allow-Origin'] = '*'
if request.method == "OPTIONS":
response["Access-Control-Allow-Headers"] = "Content-Type"
response["Access-Control-Allow-Headers"] = "authorization"
return response
-pip install django-cors-headers
-注册app:'corsheaders',
-配置中间件:corsheaders.middleware.CorsMiddleware
-setting中配置:
CORS_ORIGIN_ALLOW_ALL = True
CORS_ALLOW_METHODS = (
'DELETE',
'GET',
'OPTIONS',
'PATCH',
'POST',
'PUT',
'VIEW',
)
CORS_ALLOW_HEADERS = (
'authorization',
'content-type',
)
3 前后台打通
import axios from 'axios' //导入安装的axios
//相当于把axios这个对象放到了vue对象中,以后用 vue对象.$axios
Vue.prototype.$axios = axios;
this.$axios.get('http://127.0.0.1:8000/home/home/'). 向某个地址发送get请求
then(function (response) { 如果请求成功,返回的数据再response中
console.log(response)
}).catch(function (error) {
console.log(error)
})
function (response) { console.log(response)}
response=>{ console.log(response)}
4 xadmin后台管理
'xadmin',
'crispy_forms',
'reversion',
python manage.py makemigrations
python manage.py migrate
import xadmin
xadmin.autodiscover()
from xadmin.plugins import xversion
xversion.register_models()
urlpatterns = [
path(r'xadmin/', xadmin.site.urls),
]
python manage.py createsuperuser
作业
1 解决跨域问题,前后台打通
2 写一个登陆,注册功能,前端vue(不需要界面好看)
3 编写首页轮播图接口
4 预习git,redis(安装上git客户端,注册码云账号(https://gitee.com/),本机安装上redis和RedisDesktopManager)