django arya插件对数据库操作使用，reverse发娘解析url的使用

arya 项目01 （主要学习reverse方法，逆向解析url）
一、项目结构(只列出使用的文件)

- learnmodelform    项目目录
- app01    第一个app
model.py    数据库文件
arya.py    引用插件

- arya    第二个app
apps.py    加载自动搜索模块，django启动时自动搜索该我文件配置的模块
- service    arya逻辑文件目录
v1.py    逻辑代码文件，主要用来配置url，table表单展示数据，数据库操作等
- learnmodelform
settings.py  配置文件
urls.py    路由文件

- templates    模板文件

model.py代码:
from django.db import models

# Create your models here.

class Role(models.Model):
caption = models.CharField(max_length=32)

def __str__(self):
return self.caption

class UserType(models.Model):
title = models.CharField(max_length=32)

def __str__(self):
return self.title

class UserInfo(models.Model):
name = models.CharField(max_length=32)
pwd = models.CharField(max_length=32)
email = models.CharField(max_length=32)

ut = models.ForeignKey(to="UserType", blank=True,null=True)

roles = models.ManyToManyField(to="Role",blank=True)

def __str__(self):
return self.name

arya.py代码:
from arya.service import v1
from . import models

"""
{
models.UserInfo: AryaConfig(models.UserInfo,site),
models.UserType: AryaConfig(models.UserType,site),
}
"""

class UserInfoConfig(v1.AryaConfig):
list_display = ['name', 'pwd', 'id', 'email']

v1.site.register(models.UserInfo,UserInfoConfig)

class UserTypeConfig(v1.AryaConfig):
list_display = ['id', 'title']

v1.site.register(models.UserType, UserTypeConfig)

class RoleConfig(v1.AryaConfig):
list_display = ['id', 'caption']

v1.site.register(models.Role,RoleConfig)

apps.py代码(在arya应用中)
from django.apps import AppConfig

class AryaConfig(AppConfig):
name = 'arya'

def ready(self):
from django.utils.module_loading import autodiscover_modules
autodiscover_modules('arya')

v1.py代码:
from django.shortcuts import HttpResponse,render,redirect
from django.utils.safestring import mark_safe
from django.urls import reverse

class AryaConfig(object):
list_display = []

def get_list_display(self):
result = []
result.extend(self.list_display)
# 如果有编辑权限   #reslut=['name', 'pwd', 'id', 'email']
result.append(AryaConfig.row_edit)
# 如果有删除权限
result.append(AryaConfig.row_del)

result.insert(0, AryaConfig.row_checkbox)

return result

def row_del(self,row):
# return row.name + row.email+str(row.id)
# 生成删除URL
# app01_userinfo_delete
app = self.model_class._meta.app_label  #app名
md = self.model_class._meta.model_name
name = "arya:%s_%s_delete" %(app,md,)  # arya:app01_userinfo_delete
url = reverse(viewname=name, args=(row.id,))    #逆向解析url
print(url)
return mark_safe("<a href='{0}'>删除</a>".format(url))

def row_edit(self,row):
# return row.name + row.email+str(row.id)
# 生成编辑URL
#  app01_userinfo_change
app = self.model_class._meta.app_label
md = self.model_class._meta.model_name
name = "arya:%s_%s_change" %(app, md,) # arya:app01_userinfo_change  必须按照这种格式，change是视图函数
url = reverse(viewname=name,args=(row.id,))
return mark_safe("<a href='{0}'>编辑</a>".format(url))

def row_checkbox(self,row):
return mark_safe("<input type='checkbox' value='{0}' />".format(row.id))

def __init__(self, model_class,site):
self.model_class = model_class
self.site = site

@property
def urls(self):
from django.conf.urls import url, include
# self.model_class # UserInfo,UserGroup
app = self.model_class._meta.app_label
md = self.model_class._meta.model_name

partterns = [
url(r'^$', self.changelist_view, name="%s_%s_list" %(app, md,)),
url(r'^add/',self.add_view,name="%s_%s_add" %(app,md,)),
url(r'^(\d+)/change/',self.change_view,name="%s_%s_change" %(app,md,)),
url(r'^(\d+)/delete/',self.delete_view,name="%s_%s_delete" %(app,md,)),
]
return partterns

def changelist_view(self,request):
"""
访问列表页面
self =  AryaConfig对象1（UserInfo）,model_class=UserInfo
/userinfo/
/userinfo/add/
/userinfo/1/delete/
/userinfo/1/change/
self.model_class = UserInfo
/usertype/
/usertype/add/
/usertype/1/delete/
/usertype/1/change/
self.model_class = UserType

:param request:
:return:
"""
table_data = []
queryset = self.model_class.objects.all()
# [obj,obj,obj,obj]
# list_display = ['name','pwd','email']
for obj in queryset:
row = []
for str_func in self.get_list_display():
if isinstance(str_func,str):
col = getattr(obj,str_func)
else:
col = str_func(self,obj)
row.append(col)
table_data.append(row)

return render(request,'changelist.html',{'table_data': table_data})

def add_view(self,request):
return HttpResponse('添加页面')

def change_view(self,request,nid):
# obj = self.model_class.objects.filter(id=nid).first()

return HttpResponse('修改页面')

def delete_view(self,request,nid):
# self.model_class.objects.filter(id=nid).delete()
return HttpResponse('删除页面')

class AryaSite(object):
def __init__(self):
self._registry = {}

def register(self, class_name, config_class):
"""
self._registry = {
models.UserInfo: obj1 = AryaConfig(models.UserInfo,site),
models.UserType: obj2 = AryaConfig(models.UserType,site),
}
:param class_name:
:param config_class:
:return:
"""
self._registry[class_name] = config_class(class_name,self)

@property
def urls(self):
from django.conf.urls import url, include
partterns = [
url(r'^login/', self.login),
url(r'^logout/', self.logout),
]

for model_class,arya_config_obj in self._registry.items():
app_model_name = r'^{0}/{1}/'.format(model_class._meta.app_label,model_class._meta.model_name)  #/app名/模块名/
pt = url(app_model_name, (arya_config_obj.urls,None,None))
partterns.append(pt)

return partterns

def login(self,request):
from django.shortcuts import HttpResponse
return HttpResponse('Login')

def logout(self,request):
from django.shortcuts import HttpResponse
return HttpResponse('Logout')

site = AryaSite()

urls.py代码:
from django.conf.urls import url,include
from django.contrib import admin
from arya.service import v1

urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'arya/', (v1.site.urls,None,'arya')),
]

settings.py修改install_app
'arya.apps.AryaConfig',
'app01',

changelist.html 模板代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<table border="1">
{% for row in table_data %}
<tr>
{% for col in row %}
<td>{{ col }}</td>
{% endfor %}
</tr>
{% endfor %}
</table>
</body>
</html>

二、ModelForm插件用法(其他代码参考一)
views.py代码:
from django.shortcuts import render,redirect

# Create your views here.
from django.forms import ModelForm
from . import models

class TestModelForm(ModelForm):
class Meta:
# model = models.UserInfo
model = models.UserType
fields = "__all__"

def test(request):
if request.method == "GET":
obj = TestModelForm()
return render(request,'test.html', {'obj':obj})
else:
obj = TestModelForm(data=request.POST)
if obj.is_valid():
obj.save()
return redirect('/arya/app01/usertype/')
return render(request,'test.html', {'obj':obj})

def edit(request,nid):
# user_obj = models.UserInfo.objects.filter(id=nid).first()
user_obj = models.UserType.objects.filter(id=nid).first()
if request.method == 'GET':
obj = TestModelForm(instance=user_obj)
return render(request,'edit.html',{'obj':obj})
else:
obj = TestModelForm(instance=user_obj,data=request.POST)
if obj.is_valid():
obj.save()
return redirect('/arya/app01/usertype/')
return render(request, 'edit.html', {'obj':obj})

urls.py
from django.conf.urls import url,include
from django.contrib import admin
from arya.service import v1
from app01 import views

urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'arya/', (v1.site.urls,None,'arya')),
url(r'^test/',views.test),
url(r'^edit/(\d+)/',views.edit),
]

test.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>添加页面</h1>
<form method="POST" novalidate>
{% csrf_token %}
{{ obj.as_p }}
<input type="submit" value="提交">
</form>
</body>
</html>

edit.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>编辑页面</h1>
<form method="POST" novalidate>
{% csrf_token %}
{{ obj.as_p }}
<input type="submit" value="提交">
</form>
</body>
</html>