CRM——插件流程回顾

1. Django项目启动 自动加载文件 制作启动文件1. 注册strak 在apps.py 类里面增加如下 def ready(self):from django.utils.module_loading import autodiscover_modulesautodiscover_modules("stark")2. 在已经注册的app中创建stark.py文件 加载2. 在stark中模仿AdminSite ModelAdmin类写代码 注册自己的类class StarkConfig(object):def __init__(self,model_class,site):self.model_class = model_classself.site = siteclass StarkSite(object):def __init__(self):self._registey = {}def register(self,model_class,stark_config_class=None):if not stark_config_class:stark_config_class = StarkConfigself._registey[model_class] = stark_config_class(model_class,self)site = StarkSite()3. 将注册的类自动生成url- urls.pyfrom stark.service import v1urlpatterns = [url(r'^stark/', v1.site.urls),]- 为每个类生成4个url v1.py class StarkConfig(object):def __init__(self,model_class,site):self.model_class = model_classself.site = sitedef get_urls(self):app_model_name = (self.model_class._meta.app_label,self.model_class._meta.model_name,)url_patterns = [url(r'^$',self.changelist_view,name="%s_%s_changlist" %app_model_name),url(r'^add/$',self.add_view,name="%s_%s_add" %app_model_name),url(r'^(\d+)/delete/$',self.delete_view,name="%s_%s_delete" %app_model_name),url(r'^(\d+)/change/$',self.change_view,name="%s_%s_chang" %app_model_name),]return url_patterns@propertydef urls(self):return self.get_urls()def changelist_view(self,request,*args,**kwargs):return HttpResponse('列表')def add_view(self,request,*args,**kwargs):return HttpResponse('添加')def delete_view(self,request,nid,*args,**kwargs):return HttpResponse('删除')def change_view(self,request,nid,*args,**kwargs):return HttpResponse('修改')class StarkSite(object):def __init__(self):self._registey = {}def register(self,model_class,stark_config_class=None):if not stark_config_class:stark_config_class = StarkConfigself._registey[model_class] = stark_config_class(model_class,self)def get_urls(self):url_pattern = []for model_class,stark_config_obj in self._registry.items():app_name = model_class._meta.app_labelmodel_name = model_class._meta.model_namecurd_url = url(r'^%s/%s/' %(app_name,model_name,) , (stark_config_obj.urls,None,None))url_pattern.append(curd_url)return url_pattern@propertydef urls(self):return (self.get_urls(),None,'stark')site = StarkSite()4. 列表页面展示- v1.pydef changelist_view(self,request,*args,**kwargs):# 处理表头head_list = []for field_name in self.list_display:if isinstance(field_name,str):# 根据类和字段名称，获取字段对象的verbose_nameverbose_name = self.model_class._meta.get_field(field_name).verbose_nameelse:verbose_name = field_name(self,is_header=True)head_list.append(verbose_name)# 处理表中的数据# [ UserInfoObj,UserInfoObj,UserInfoObj,UserInfoObj,]# [ UserInfo(id=1,name='alex',age=18),UserInfo(id=2,name='alex2',age=181),]data_list = self.model_class.objects.all()new_data_list = []for row in data_list:# row是 UserInfo(id=2,name='alex2',age=181)# row.id,row.name,row.agetemp = []for field_name in self.list_display:if isinstance(field_name,str):val = getattr(row,field_name) # # 2 alex2else:val = field_name(self,row)temp.append(val)new_data_list.append(temp)return render(request,'stark/changelist.html',{'data_list':new_data_list,'head_list':head_list})- shark.pyclass UserInfoConfig(v1.StarkConfig):def checkbox(self,obj=None,is_header=False):if is_header:return '选择'return mark_safe('<input type="checkbox" name="pk" value="%s" />' %(obj.id,))def edit(self,obj=None,is_header=False):if is_header:return '编辑'return mark_safe('<a href="/edit/%s">编辑</a>' %(obj.id,))list_display = [checkbox,'id','name',edit]4. 显示增加按钮- 先判断是否显示,再通过反向解析生成增加链接- 后端# 是否显示增加按钮show_add_btn = Truedef get_show_btn(self):return self.show_add_btnreturn render(request, 'stark/changelist.html', {'data_list': new_data_list, 'head_list': head_list,"add_url":self.get_add_url(),"show_add_btn":self.get_show_btn()})- 前端{% if show_add_btn %}<a class="btn btn-primary" href="{{ add_url }}">增加</a>{% endif %}5. 增加内容页面1. 通过ModelForm创建公共类 显示和提交- 后端def add_view(self, request, *args, **kwargs):class AddTable(ModelForm):class Meta:model = self.model_classfields = "__all__"if request.method == "GET":form = AddTable()return render(request,"stark/add_view.html",{"form":form})else:form = AddTable(request.POST)if form.is_valid():form.save()return redirect(self.get_list_url())else:return render(request, "stark/add_view.html", {"form": form})- 前端<form method="post" novalidate>{% csrf_token %}{{ form.as_p }}<input type="submit" value="提交"></form>2. 升级 在子类自定义ModelForm类 子类之后可以自定义类- v1.pymodel_form_class = Nonedef get_model_form_class(self):if self.model_form_class:return self.model_form_classelse:#方式一:# class AddTable(ModelForm):#     class Meta:#         model = self.model_class#         fields = "__all__"# return AddTable#方式二:meta = type("Meta",(object,),{"model":self.model_class,"fields":"__all__"})AddTable = type("AddTable",(ModelForm,),{"Meta":meta})return AddTabledef add_view(self, request, *args, **kwargs):model_form_class = self.get_model_form_class()if request.method == "GET":form = model_form_class()return render(request,"stark/add_view.html",{"form":form})else:form = model_form_class(request.POST)if form.is_valid():form.save()return redirect(self.get_list_url())else:return render(request, "stark/add_view.html", {"form": form})- stark.pyclass UserInfoModelForm(ModelForm):class Meta:model = models.UserInfofields = ["name","password"]error_messages = {"name":{'required':'用户名不能为空'}}class UserInfoConfig(v1.StarkConfig):model_form_class = UserInfoModelForm6. 修改 和 删除def change_view(self, request, nid, *args, **kwargs):obj = self.model_class.objects.filter(pk=nid).first()if not obj:return redirect(self.get_list_url())model_form_class = self.get_model_form_class()if request.method == "GET":form = model_form_class(instance=obj)return render(request,"stark/change_view.html",{"form":form})else:form = model_form_class(instance=obj,data=request.POST)if form.is_valid:form.save()return redirect(self.get_list_url())return render(request,"stark/change_view.html",{"form":form})def delete_view(self, request, nid, *args, **kwargs):self.model_class.objects.filter(pk=nid).delete()return redirect(self.get_list_url())