Django admin:如何从父级重定向到子级模型的视图？

from django.shortcuts import redirect

class ParentModelAdmin(admin.ModelAdmin):
    def redirect_to_child(self, obj):
        # 获取子级模型的URL
        child_url = obj.childmodel.get_admin_url()
        return redirect(child_url)
    redirect_to_child.short_description = "Redirect to Child Model"

class ParentModelAdmin(admin.ModelAdmin):
    list_display = ('id', 'redirect_to_child')

from django.urls import reverse

class ChildModelAdmin(admin.ModelAdmin):
    def get_admin_url(self):
        return reverse('admin:appname_childmodel_change', args=(self.id,))

admin.site.register(ParentModel, ParentModelAdmin)
admin.site.register(ChildModel, ChildModelAdmin)