1、新建Django项目--新建app:app01和stark--在settings中配置app和数据库--在models.py中新建模型表--完成数据库迁移
2、在stark下的apps.py中：
from django.apps import AppConfig
from django.utils.module_loading import autodiscover_modules class StarkConfig(AppConfig):
name = 'stark' def ready(self):
autodiscover_modules('stark') # 在程序启动后、url路由分配之前去找到叫stark的app
3、在settings中配置stark：
4、在app01下新建stark.py文件，完成模型表注册：
from stark.service.stark import *
from django.utils.safestring import mark_safe
from django.urls import reverse
from .models import * class UserInfoConfig(ModelStark):
def edit(self, data_obj):
"""编辑"""
model_name = self.model._meta.model_name # 表名
app_label = self.model._meta.app_label # app名
_url = reverse("%s_%s_edit" % (app_label, model_name), args=(data_obj.pk,)) # 反向解析 拿到url
return mark_safe("<a href='%s'>编辑</a>" % _url) # 防止转义 def checkbox(self, data_obj):
"""每条记录前面插入一个选择框"""
return mark_safe("<input type='checkbox'>") list_display = [checkbox, "name", "age", edit] class BookConfig(ModelStark):
list_display = ["title", "price", "pub_date"] site.register(UserInfo, UserInfoConfig)
site.register(Book, BookConfig) print("_registry:", site._registry) """
函数：函数中有多少个参数，就要传递多少各参数，不存在自动传参
方法：自动将调用对象作为第一个参数进行传递
"""
5、在stark下新建包service--service下新建stark.py文件：
from django.conf.urls import url
from django.shortcuts import HttpResponse, render class ModelStark(object):
list_display = [] def __init__(self, model, site):
self.model = model # 用户当前访问的模型表
self.site = site def add(self, request):
"""新增记录"""
return HttpResponse("add") def delete(self, request, delete_id):
"""删除记录"""
return HttpResponse("delete") def edit(self, request, edit_id):
"""编辑"""
return HttpResponse("edit") def show(self, request):
"""查看"""
data_list = self.model.objects.all() # 获取数据 new_data_list = []
if self.list_display:
for data_obj in data_list: # 数据对象
temp = []
for field in self.list_display: # 字段名
if callable(field): # 判断是否为函数
val = field(self, data_obj)
else:
val = getattr(data_obj, field) # 通过反射获取字段对应的数据
temp.append(val)
new_data_list.append(temp) return render(request, "listInfo.html", locals()) def get_method(self):
"""增删改查url"""
method_list = []
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
method_list.append(url(r'^add/', self.add, name="%s_%s_add" % (app_label, model_name)))
method_list.append(url(r'^(\d+)/delete/', self.delete, name="%s_%s_delete" % (app_label, model_name)))
method_list.append(url(r'^(\d+)/edit/', self.edit, name="%s_%s_edit" % (app_label, model_name)))
method_list.append(url(r'^$', self.show, name="%s_%s_show" % (app_label, model_name)))
return method_list @property
def urls2(self):
return self.get_method(), None, None class StarkSite(object):
def __init__(self):
self._registry = {} def register(self, model, stark_class=None):
if not stark_class:
stark_class = ModelStark self._registry[model] = stark_class(model, self) def get_urls(self):
"""拼接url"""
urls_list = []
for model, stark_class_obj in self._registry.items():
model_name = model._meta.model_name # 模型表
app_label = model._meta.app_label # app名称
print(model_name, app_label)
# 添加url
urls_list.append(url(r'^%s/%s/' % (app_label, model_name), stark_class_obj.urls2))
"""
url(r'^app01/userinfo/', UserInfoConfig(UserInfo).urls2),
url(r'^app01/book/', ModelStark(Book).urls2),
"""
return urls_list @property
def urls(self):
return self.get_urls(), None, None site = StarkSite()
6、templates下新建模板
7、全局urls.py：
from django.contrib import admin
from django.urls import path, include
from django.conf.urls import url
from stark.service import stark urlpatterns = [
path('admin/', admin.site.urls), # 自定义stark组件
url('^stark/', stark.site.urls),
]
"""
admin源码：
1、注册
admin.py
admin.site.register()
2、url设计
在ModelStark中：
self.model :用户当前访问的模型表 查看页面：
表头
表数据
search
actions
分页
filter 增删改(modelForm) pop功能 作业：
访问任何模型表时都有编辑、删除、选择框
如果用户没有配置的list_display，如何显示数据
"""
