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1from django.contrib import admin
2
3from wv_dvs.admin import ModelAdmin
4from .models import SiteSetting
5
6
7@admin.register(SiteSetting)
8class SiteSettingsAdmin(ModelAdmin):
9
10 def has_add_permission(self, request, obj=None):
11 if self.get_queryset(request).count():
12 return False
13 return True
