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README
BSD-3-Clause

Django Cool

Django 框架快速使用扩展库

【阅读文档】

本项目在以下代码托管网站同步更新:

安装与升级

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

开始使用

settings.py 配置

INSTALLED_APPS 中添加 cool

INSTALLED_APPS = (
    ...
    'cool',
)

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')),
    )
}

models扩展

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

后台管理扩展

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
    )

api接口扩展

  • 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)
]

示例项目

demo项目

BSD 3-Clause License Copyright (c) 2020, 007gzs All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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