为什么Django没有查看权限？

Question

我有一个活跃的Django项目，客户支持团队使用管理面板。 Django缺少view权限，因此我必须将更改权限分配给客户支持团队，这有点危险。由于安全问题，我有一些模型，客户支持团队只需要查看访问权限而不需要更改访问权限。为什么在Django中缺少view permision？任何解决方法呢？

Answer 1

我认为这应该工作：

1.新增 “查看” 的权限，请参阅https://*.com/a/23411901/1266258

2.Customize “变” 权限：

class FooAdmin(ModelAdmin): 
    def has_change_permission(self, request, obj=None): 
     # user can view the change list 
     if not obj and request.user.has_perm('myapp.view_foo'): 
      return True 
     # user can view the change form and change the obj 
     return request.user.has_perm('myapp.change_foo') 

Answer 2

这里有一个解决方法。

模式

由混入继承他们只需创建视图的权限模型：

class ViewPermissionsMixin(models.Model): 
    """ 
     Mixin adds view permission to model. 
    """ 
    class Meta: 
     abstract=True 
     default_permissions = ('add', 'change', 'delete', 'view') 

实例模型：

class ExampleModel(ViewPermissionsMixin): 
    name = models.CharField(max_length=255) 

    class Meta(ViewPermissionsMixin.Meta): 
     abstract = False 

这将增加可分配给视图的权限某个用户/组。但是，如果没有适当的管理员修改，这种许可就没用

管理员

这里被混入你的管理员：

class AdminViewMixin(admin.ModelAdmin): 

    def has_perm(self,user,permission): 
     """ 
      Usefull shortcut for `user.has_perm()` 
     """ 
     if user.has_perm("%s.%s_%s" % (self.model._meta.app_label,permission,self.model.__name__.lower(),)): 
      return True 
     return False 

    def has_module_permission(self, request): # Django 1.8 
     pass 

    def has_change_permission(self, request, obj=None): 
     """ 
      Necessary permission check to let Django show change_form for `view` permissions 
     """ 
     if request.user.is_superuser: 
      return True 
     elif self.has_perm(request.user,'change'): 
      return True 
     elif self.has_perm(request.user,'view'): 
      return True 
     return super(AdminMixin, self).has_change_permission(request, obj) 

    def get_readonly_fields(self, request, obj=None): 
     """ 
      Turn each model field into read-only for `viewers` 
     """ 
     all_model_fields = [] 
     for field in self.model._meta.fields: 
      # TODO in Django 1.8 use ModelAdmin.get_fields() 
      if not field.auto_created \ 
       and (not hasattr(field,'auto_now_add') or not field.auto_now_add) \ 
       and (not hasattr(field,'auto_now') or not field.auto_now) \ 
       : 
       all_model_fields.append(field.name) 
     if request.user.is_superuser: 
      return self.readonly_fields 
     elif self.has_perm(request.user,'change'): 
      return self.readonly_fields 
     elif self.has_perm(request.user,'view'): 
      return all_model_fields 
     return self.readonly_fields 

    def change_view(self, request, object_id, extra_context=None): 
     """ 
      Disable buttons for `viewers` in `change_view` 
     """ 
     if request.user.is_superuser: 
      pass 
     elif self.has_perm(request.user,'change'): 
      pass 
     elif self.has_perm(request.user,'view'): 
      extra_context = extra_context or {} 
      extra_context['hide_save_buttons'] = True 
     return super(AdminViewMixin, self).change_view(request, object_id, extra_context=extra_context) 

实例管理：

@admin.register(models.ExampleModel) 
class ExampleAdmin(AdminViewMixin): 
    list_display = ('name',) 
    pass 

最后只是为其分配特定车型中的任何用户或组view许可，您Django Admin。