Django 框架快速使用扩展库
本项目在以下代码托管网站同步更新:
目前 Django Cool 支持的 Python 环境有 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12 支持 Django 版本 2.2, 3.x, 4.x, 5.x
为了简化安装过程,推荐使用 pip 进行安装
pip install django-cool
升级 Django Cool 到新版本:
pip install -U django-cool
如果需要安装 GitHub 上的最新代码:
pip install https://github.com/007gzs/django-cool/archive/master.zip
如果需要展示html接口文档需要安装markdown依赖:
pip install markdown
如果使用websocket功能需要安装channels依赖:
pip install channels>=2.4
在 INSTALLED_APPS 中添加 cool
INSTALLED_APPS = (
...
'cool',
)
在 settings.py 中设置 DJANGO_COOL
DJANGO_COOL = {
'API_ERROR_CODES': (
('ERR_DEMO_NOLOGIN', (10001, '请先登陆')),
('ERR_DEMO_NOTFOUND', (10002, '用户名密码错误')),
('ERR_DEMO_PERMISSION', (10003, '权限错误')),
('ERR_DEMO_DUPLICATE_USERNAME', (10011, '用户名已存在')),
('ERR_DEMO_DUPLICATE_MOBILE', (10012, '手机号已存在')),
)
}
自定义 Model 继承 BaseModel 可使用扩展功能:
- 支持字段变更监控记录
- 通过 save_changed() 保存已修改字段
- 主键唯一键缓存
- 缓存获取: get_obj_by_pk_from_cache() get_obj_by_unique_key_from_cache()
- 删除缓存: flush_cache_by_pk() flush_cache_by_unique_key() flush_cache()
- 搜索字段自动生成
- get_search_fields() 自动生成搜索字段,默认返回所有设置索引的char和int类型字段
BaseModelAdmin 提供扩展功能:
- 默认列出所有基础字段
- 增加相关项列,通过外键快速跳转
- 增、删、改权限统一控制
- 提交保存时,检查数据是否被修改
使用 admin_register() 装饰器可以快速将 Model 注册到后台管理
@admin_register
class Module(BaseModel):
name = models.CharField('module name', max_length=255)
code = models.CharField('module code', max_length=100, unique=True)
@admin_register(
list_display=['module', 'name'],
list_filter=['module', ],
change_view_readonly_fields=['code', ],
list_editable=['name', 'module']
)
class Permission(BaseModel):
name = models.CharField('permission name', max_length=255)
code = models.CharField('permission code', max_length=100)
module = model.ForeignKey(
Module, verbose_name='module', to_field='code', db_column='module_code', on_delete=models.PROTECT
)
- CoolBFFAPIView 可方便创建
application/x-www-form-urlencoded
/multipart/form-data
方式的接口。 - Meta 类中配置参数列表 param_fields 后可以自动生成接口文档,自动做参数验证
- 使用 ViewSite 快速注册接口生成 urlpatterns
使用样例:
views.py:
from cool.views import ViewSite, CoolBFFAPIView, ErrorCode, CoolAPIException
from django.contrib.auth import authenticate, login
from django.db import IntegrityError
from django.db.models import Q
from rest_framework import fields
from . import serializer, constants
site = ViewSite(name='demo', app_name='demo')
@site
class UserRegister(CoolBFFAPIView):
name = '用户注册'
response_info_serializer_class = serializer.UserSerializer
def get_context(self, request, *args, **kwargs):
user = models.User.objects.filter(
Q(username=request.params.username) | Q(mobile=request.params.mobile)
).first()
if user is not None:
if user.username == request.params.username:
raise CoolAPIException(ErrorCode.ERR_DEMO_DUPLICATE_USERNAME)
elif user.mobile == request.params.mobile:
raise CoolAPIException(ErrorCode.ERR_DEMO_DUPLICATE_MOBILE)
user = models.User()
user.username = request.params.username
user.mobile = request.params.mobile
user.nickname = request.params.nickname
user.name = request.params.name
user.avatar = request.params.avatar
user.gender = request.params.gender
user.set_password(request.params.password)
try:
user.save(force_insert=True)
except IntegrityError as exc:
if exc.args[0] == 1062:
if exc.args[1].find('username') >= 0:
exc = CoolAPIException(ErrorCode.ERR_DEMO_DUPLICATE_USERNAME)
elif exc.args[1].find('mobile') >= 0:
exc = CoolAPIException(ErrorCode.ERR_DEMO_DUPLICATE_MOBILE)
raise exc
user = authenticate(self, base_username=request.params.username, base_password=request.params.password)
if user is None:
raise CoolAPIException(ErrorCode.ERR_DEMO_NOTFOUND)
login(request, user)
return serializer.UserSerializer(user, request=request).data
class Meta:
param_fields = (
('username', fields.CharField(label='登陆名', max_length=64, help_text='字段说明,会显示在接口文档中')),
('password', fields.CharField(label='密码'),
('gender', fields.ChoiceField(label='性别', choices=constants.Gender.get_choices_list())),
('mobile', fields.RegexField(r'1\d{10}', label='手机号')),
('nickname', fields.CharField(label='昵称', max_length=255)),
('name', fields.CharField(label='姓名', default='', max_length=255)),
('avatar', fields.ImageField(label='头像', default=None)),
)
urls = site.urls
urlpatterns = site.urlpatterns
urls.py:
from django.contrib import admin
from django.urls import path, include
from cool.views import get_api_doc_html
api_patterns = [
path('demo/', include('example.apps.demo.views')),
]
urlpatterns = [
path('cool/', include('cool.urls')),
path('admin/', admin.site.urls),
path('api/', include(api_patterns)),
path('api_doc.html', get_api_doc_html)
]