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

柔光的暖阳◎ 2021-09-20 05:14 105阅读 0赞

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>

转载于:https://blog.51cto.com/haoyonghui/2044721