python - 如何在 django admin 中使用自定义字段进行搜索

Question

我有一个模型并已注册到管理员，我已使用自定义字段显示在列表中

class ReportsAdmin(admin.ModelAdmin):
    def investment(self, inst):
        return models.OrderDetail.objects.filter(user=inst.user).distinct().count()

    list_display = ['investment']
    search_fields = ['investment']

我想在 django admin 中使用 investment 字段进行搜索，但总是得到 Cannot resolve keyword 'investment' into field. 选择是模型字段。

有什么方法可以使用 investment 字段进行搜索吗？

Answer 1

在软件中，一切皆有可能... SMH 在已接受的答案中。您必须覆盖 get_search_results。

from django.db.models import Count

class ReportsAdmin(admin.ModelAdmin):
    def investment(self, inst):
        return models.OrderDetail.objects.filter(user=inst.user).distinct().count()

    list_display = ['investment']
    search_fields = ['investment']

    def get_search_results(self, request, queryset, search_term):
        # search_term is what you input in admin site
        search_term_list = search_term.split(' ')  #['apple','bar']

        if not any(search_term_list):
            return queryset, False

        if 'investment' in search_term_list:
           queryset = OrderDetail.objects.annotate(
               user_count=Count('user')
           ).filter(user_count__gte=search_term_list['investment'])

        return queryset, False