7 stark组件介绍、配置、2层url

1、django的admin配置

model.py

from django.db import models

# Create your models here.

class UserInfo(models.Model):
    name=models.CharField(max_length=32)
    age=models.IntegerField()

    def __str__(self):
        return self.name

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

    def __str__(self):
        return self.title

admin.py配置

from django.contrib import admin

# Register your models here.
from .models import *

class UserAdmin(admin.ModelAdmin):
    list_display = ["pk",'name','age']
    list_filter = ['name','age']

    # 定制action具体方法
    def func(self,request,queryset):
        queryset.update(age=44)

    func.short_description = "批量初始化操作"
    actions = [func]

admin.site.register(UserInfo,UserAdmin)
admin.site.register(Book)

admin.py

makemigrations
migrate
createsuperuser （alex 1234qwer）

2 stark组件开发

仿django自带得admin组件。

1、 python manage.py startapp stark

2、stark/service/stark.py (单例对象)

# -*- coding: utf-8 -*-
# @Time    : 2018/08/17 0017 14:46
# @Author  : Venicid

class ModelStark(object):
    def __init__(self,model, site):
        self.model = model
        self.site = site

class StarkSite(object):
    """site单例类"""
    def __init__(self):
        self._registry = {}

    def register(self,model, stark_class=None):
        """注册"""
        if not stark_class:
            stark_class = ModelStark

        self._registry[model] = stark_class(model,self)

site = StarkSite()   # 单例对象

3. settings中配置'  stark.apps.StarkConfig'

from django.apps import AppConfig
from django.utils.module_loading import autodiscover_modules

class App01Config(AppConfig):
    name = 'app01'

    # 程序启动时，扫描app下得指定文件（starkadmin.py）并执行
    def ready(self):
        autodiscover_modules('starkadmin')

4.models.py (一对一，一对多，多对多)

from django.db import models

# Create your models here.

class Author(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    age = models.IntegerField()

    # 与AuthorDetail建立一对一的关系
    authorDetail = models.OneToOneField(to="AuthorDetail",to_field="nid", on_delete=models.CASCADE)

    def __str__(self):
        return self.name

class AuthorDetail(models.Model):
    nid = models.AutoField(primary_key=True)
    birthday = models.DateField()
    telephone = models.BigIntegerField()
    addr = models.CharField(max_length=64)

    def __str__(self):
        return str(self.telephone)

class Publish(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    city = models.CharField(max_length=32)
    email = models.EmailField()

    def __str__(self):
        return self.name

class Book(models.Model):
    nid = models.AutoField(primary_key=True)
    title = models.CharField(verbose_name='名称', max_length=32)
    publishDate = models.DateField()
    price = models.DecimalField(verbose_name='价格', max_digits=5,decimal_places=2)

    # 与Publish建立一对多的关系,外键字段建立在多的一方
    publish = models.ForeignKey(to="Publish", to_field="nid", on_delete=models.CASCADE)
    # 与Author表建立多对多的关系,ManyToManyField可以建在两个模型中的任意一个，自动创建第三张表
    authors = models.ManyToManyField("Author")

    def __str__(self):
        return self.title

5、starkadmin中注册（仿admin）

6 配置urls，启动

3、2层url分发

1、构造1层url

stark/service/stark.py

# -*- coding: utf-8 -*-
# @Time    : 2018/08/17 0017 14:46
# @Author  : Venicid
from django.conf.urls import url

class ModelStark(object):
    def __init__(self,model, site):
        self.model = model
        self.site = site

class StarkSite(object):
    """site单例类"""
    def __init__(self):
        self._registry = {}

    def register(self,model, stark_class=None):
        """注册"""
        if not stark_class:
            stark_class = ModelStark

        self._registry[model] = stark_class(model,self)

    def get_urls(self):
        """构造一层urls app01/book"""
        temp = []
        print(self._registry)

        for model, stark_class_obj in self._registry.items():
            app_label = model._meta.app_label     # app01
            model_name = model._meta.model_name   # book
            temp.append(url(r'^%s/%s'%(app_label, model_name),([],None,None)))

        return temp

    @property
    def urls(self):

        # return [],None,None
        return self.get_urls(),None,None

site = StarkSite()   # 单例对象

2、不同的model表，显示不同的url

3、ModelStark

ModelStark()
    self.model:用户访问的模型表

4、构造2层urls

　　

# -*- coding: utf-8 -*-
# @Time    : 2018/08/17 0017 14:46
# @Author  : Venicid
from django.conf.urls import url
from django.shortcuts import HttpResponse

class ModelStark(object):
    def __init__(self,model, site):
        self.model = model
        self.site = site

    def list_view(self, request):
        print(self.model)  # <class 'app01.models.Book'>  用户访问的模型表
        return HttpResponse('list_view')

    def add(self, request):
        return HttpResponse('add')

    def delete(self, request, id):
        return HttpResponse('delete')

    def change(self, request, id):
        return HttpResponse('change')

    def get_urls2(self):
        """构造 add/delete/change"""
        temp = []
        temp.append(url(r'^$', self.list_view))
        temp.append(url(r'^add/', self.add))
        temp.append(url(r'^(\d+)/delete/', self.delete))
        temp.append(url(r'^(\d+)/change/', self.change))

        return temp

    @property
    def urls2(self):

        return self.get_urls2(), None, None

class StarkSite(object):
    """site单例类"""
    def __init__(self):
        self._registry = {}

    def register(self,model, stark_class=None):
        """注册"""
        if not stark_class:
            stark_class = ModelStark

        self._registry[model] = stark_class(model,self)

    def get_urls(self):
        """构造一层urls app01/book"""
        temp = []
        for model, stark_class_obj in self._registry.items():
            print(model, 'stark_clas_obj', stark_class_obj)  # 不同的model模型表
            """
             <class 'app01.models.UserInfo'> ----> <app01.starkadmin.UserConfig object at 0x00000072DDB65198>
             <class 'app01.models.Book'> ----> <stark.service.stark.ModelStark object at 0x00000072DDB65240>
             """

            app_label = model._meta.app_label     # app01
            model_name = model._meta.model_name   # book
            # temp.append(url(r'^%s/%s'%(app_label, model_name),([],None,None)))
            temp.append(url(r'^%s/%s'%(app_label, model_name),stark_class_obj.urls2))
            """
               path('app01/userinfo/',UserConfig(Userinfo,site).urls2),
               path('app01/book/',ModelStark(Book,site).urls2),
            """

        return temp

    @property
    def urls(self):

        # return [],None,None
        return self.get_urls(),None,None

site = StarkSite()   # 单例对象

4、小结

　　1. url分发：

url(r'^stark/', ([],None,None))

url(r'^stark/', stark.site.urls)

@property
def urls(self):
　　return self.get_urls(), None, None

　　2. 用户可以自定制配置页面，所以调用配置类 stark_class_obj.urls2

# 分发增删改查
temp.append(url(r'%s/%s/'%(app_label,model_name), stark_class_obj.urls2))

　　

　　3.ModelStark

ModelStark()
    self.model:用户访问的模型表

　　

model_name = self.model._meta.model_name
app_label = self.model._meta.app_label