以往建立了一张表，需要
1.为每张表创建4个url
2.为每张表创建4个视图函数
urlpatterns = [
url('^role/list/$',role.role_list,name='role_list'),
url('^role/add/$',role.role_add,name='role_add'),
url('^role/edit/(?P<pk>\d+)/$',role.role_edit,name='role_edit'),
url('^role/del/(?P<pk>\d+)/$',role.role_del,name='role_del'),
] 如果我们需要对大量的表进行这些操作，虽简单但是耗费时间和精力，且不保证细节会百分百正确。再有的是 程序狗为写重复的代码可耻！
现在：为app中的每个model类自动创建URL以及相关视图函数
def url(regex, view, kwargs=None, name=None):
return re_path(regex, view, kwargs, name)
url函数 源码
返回值主要参数为regex ，view
前面的StarkSite类中，同样是regex , view
if prev:
patterns.append(url(r'^%s/%s/%s/'%(app_name,model_name,prev),(handler.get_urls(),None,None)))
else:
patterns.append(url(r'^%s/%s/' % (app_name, model_name), (handler.get_urls(), None,None)))
prev前缀。(默认prev=None)使用者可以通过导入参数prev，实现正则不同前缀的url。
在StarkHandler类中get_urls生成相关视图函数：
def get_urls(self):
"""
生成视图函数
:return:
"""
patterns = [
url(r'^list/$', self.wapper(self.list_view), name=self.get_list_url_name),
url(r'^add/$', self.wapper(self.add_view), name=self.get_add_url_name),
url(r'^change/(?P<pk>\d+)/$', self.wapper(self.change_view), name=self.get_change_url_name),
url(r'^delete/(?P<pk>\d+)/$', self.wapper(self.delete_view), name=self.get_delete_url_name),
] patterns.extend(self.extra_urls())
return patterns
其中，各视图函数：
def list_view(self,request,*args,**kwargs):
###################### 处理action #####################
action_list = self.action_list
action_dict = {func.__name__:func.text for func in action_list}
if request.method == 'POST':
func_name = request.POST.get('action')
if func_name and func_name in action_dict: #逻辑优化，防止被 方法乱入
func = getattr(self,func_name)
func(request)
###################### 1.搜索(有值才会显示搜索框) #####################
search_list = self.get_search_list()
search_value = request.GET.get('q','')
from django.db.models import Q
conn = Q()
conn.connector = 'OR'
if search_value:
#Q,用于构造复杂的ORM查询条件
for item in search_list:
conn.children.append((item,search_value))
######################### 2.获取排序 ###############################
order_list = self.get_order_list()
#组合搜索条件字典
search_dict = self.get_search_group_condition(request)
#自定义方法筛选后的结果
queryset = self.get_queryset(**kwargs)
# print(queryset)
queryset = queryset.filter(conn).filter(**search_dict).all().order_by(*order_list)
###################### 3.处理分页(使用组件) #######################
all_count = queryset.count()
query_params = request.GET.copy() # ?=page=1&name='李四'
query_params._mutable = True #query_params['page']默认是不可以修改的
pager = Pagination(
current_page=request.GET.get('page'),
all_count=all_count,
base_url=request.path_info,
query_params=query_params,
per_page=self.per_page_count,
)
###################### 4.处理表格 ##############################
list_display = self.get_list_display()
# 4.1处理表头
header_list = []
if list_display:
for multi_key in list_display:
if isinstance(multi_key,FunctionType): #判断 传入值是否为函数
verbose_name = multi_key(self,obj=None,is_header=True)
else:
verbose_name = self.model_class._meta.get_field(multi_key).verbose_name
header_list.append(verbose_name)
else:
header_list.append(self.model_class._meta.model_name)
# 4.2处理表的内容
data_list = queryset[pager.start:pager.end]
body_list = []
for row in data_list: #row 是UserInfo object (1)
row_list = []
if list_display:
for multi_key in list_display:
if isinstance(multi_key,FunctionType):
row_list.append(multi_key(self,row,is_header=False,*args,**kwargs))
else:
row_list.append(getattr(row,multi_key)) #获取UserInfo object (1)的属性
else:
row_list.append(row)
body_list.append(row_list)
###################### 5.处理添加按钮 ##############################
add_btn = self.get_add_btn(**kwargs) #是一个URL
###################### 6.处理组合搜索 ##############################
search_group_row_list = []
search_group = self.get_search_group() # ['gender', 'depart']
for keyword_object in search_group: #keyword是一个Option类实例对象
row = keyword_object.get_queryset_or_tuple(self.model_class,request,*args,**kwargs)
#返回的是一个SearchGroupRow对象，且可迭代
search_group_row_list.append(row)
return render(request,
self.list_template or 'list.html',
{'body_list':body_list,
'header_list':header_list,
'pager':pager,
'add_btn':add_btn,
'search_list':search_list,
'search_value':search_value,
'action_dict':action_dict,
'search_group_row_list':search_group_row_list})
list_view
def add_view(self,request,*args,**kwargs):
"""
添加视图
:param request:
:return:
""" model_form = self.get_model_form()
if request.method == 'GET':
form = model_form
return render(request, 'change.html', {'form': form}) form = model_form(data=request.POST)
if form.is_valid():
response = self.save(request,form,False,*args,**kwargs)
return response or redirect(self.reverse_list_url(**kwargs))
return render(request,'change.html',{'form':form})
add_view
def change_view(self,request,pk,*args,**kwargs):
"""
编辑视图
:param request:
:param pk:
:return:
"""
checked_obj = self.get_change_object(request, pk, *args, **kwargs) if not checked_obj:
return render(request,'rbac\error.html') model_form = self.get_model_form()
if request.method == 'GET':
form = model_form(instance=checked_obj)
return render(request, 'change.html', {'form': form}) form = model_form(data=request.POST,instance=checked_obj)
if form.is_valid():
response = self.save(request, form, True, *args, **kwargs)
return response or redirect(self.reverse_list_url(**kwargs))
return render(request, 'change.html', {'form': form})
change_view
def delete_view(self,request,pk,*args,**kwargs):
"""
删除视图
:param request:
:param pk:
:return:
"""
checked_obj = self.model_class.objects.filter(pk=pk).first()
if not checked_obj:
return render(request,'rbac\error.html',) list_url = self.reverse_list_url(**kwargs)
if request.method == 'GET':
return render(request,'delete.html',{'list_url':list_url}) response = self.delete_object(request, pk, *args, **kwargs)
return response or redirect(list_url)
delete_view
以及生成各URL的别名：
def extra_urls(self):
return [] def get_url_name(self,param):
"""
返回别名(所有别名最后在这里处理)
:param param:
:return:
"""
app_name = self.model_class._meta.app_label
model_name = self.model_class._meta.model_name
if self.prev:
return '%s_%s_%s_%s' %(app_name,model_name,self.prev,param) #Web_customer_public_list
return '%s_%s_%s' %(app_name,model_name,param) @property
def get_list_url_name(self):
"""
获取列表页面URL的name
:return:
"""
return self.get_url_name('list') @property
def get_add_url_name(self):
"""
获取列表页面URL的name
:return:
"""
return self.get_url_name('add') @property
def get_change_url_name(self):
"""
获取列表页面URL的name
:return:
"""
return self.get_url_name('change') @property
def get_delete_url_name(self):
"""
获取列表页面URL的name
:return:
"""
return self.get_url_name('delete')