在多次搜索和多次尝试失败后确定.

Ok after many searches and several fail tries.

我最终设法通过使用模型"表单并将其添加到内联管理中来删除所有重复/类似的查询

class OrderItemForm(forms.ModelForm):
   """ OrderItem Model Form """
   products_choices = [('', '---------')]
   for item in Product.objects.values('pk', 'name', 'arabic_name'):
       products_choices.append(
        (item['pk'], f"{item['arabic_name']}-{item['name']}"))
   product = forms.ChoiceField(required=True,
                            choices=products_choices)

   variants_choices = [('', '---------')]
   variants_choices.extend(Variants.objects.values_list('pk', 'name'))
   variant = forms.ChoiceField(required=False,
                            choices=variants_choices)

class OrderItemStackAdmin(admin.TabularInline):
    """ Stacked Order Items """
    model = OrderItem
    form = OrderItemForm
    autocomplete_fields = ['product_add_ons']
    extra = 0
    fieldsets = (
    (_('Product'), {
        'fields': ('product', 'variant')
       }), (_('Add-Ons'), {
        'fields': ('product_add_ons', 'add_ons_note')
       }), (_('Price'), {
        'fields': ('quantity', 'product_price', 'add_ons_total_price')
      }), (_('Discount'), {
        'fields': ('discount',)
      })
    )

    def get_queryset(self, request):
       qs = super().get_queryset(request)
       return qs.prefetch_related('product_add_ons')