访问/api/customereport/出现ImproperlyConfigured错误求解决方案

访问 /api/customereport/ 接口时出现此前不存在的 ImproperlyConfigured 错误，无法自行排查修复，请求协助解决，相关代码如下：

序列化器代码 #

class MeterSerializer(serializers.HyperlinkedModelSerializer):  
    url = serializers.HyperlinkedIdentityField(view_name="meter_reading:meters-list")
    customer_reports = CustomerReportSerializer(source='customerreport_set', many=True,read_only=True) 
    class Meta:
        model = Meter
        fields = ['number','customer_reports','customer','url']

class CustomerReportSerializer(serializers.ModelSerializer):
    meter_no = serializers.SerializerMethodField(method_name='meter_num')
    customer_name = serializers.SerializerMethodField(method_name='cust_name')
    customer_number = serializers.SerializerMethodField(method_name='cust_number')
    class Meta:
        model = CustomerReport
        fields = ('meter_no','meter','customer_name','date','customer_unit','unit_rate','bill_amount','consumer_number','customer_number','pending_units',)

routers.py 代码 #

router.register('customer', CustomerViewSet)
router.register('meters',MeterViewSet,basename='meters')
router.register('issues',IssueViewSet)
router.register('customereport',CustomerReportViewSet,basename='customerreport')
# router.register('users',UserViewset)

urlpatterns = router.urls

urls.py 代码 #

urlpatterns = [
    path('', include(router.urls)),
    path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
    path('meter_access/', MeterAccess.as_view(),name='meter_access'),
]

• 首先检查MeterSerializer中HyperlinkedIdentityField指定的view_name="meter_reading:meters-list"是否符合实际路由配置：确认项目根urls.py包含当前app路由时是否指定了namespace="meter_reading"，如果没有配置命名空间，直接把view_name改为"meters-list"即可。
• 检查CustomerReportSerializer中定义的三个SerializerMethodField对应的方法是否存在：确认meter_num、cust_name、cust_number三个方法已经在该序列化器中实现，没有定义对应方法会直接触发配置错误。
• 检查CustomerReportViewSet是否配置了queryset属性，或者是否重写了get_queryset方法：DRF的视图集如果没有指定查询集，即使手动设置了basename也会抛出ImproperlyConfigured错误。
• 检查CustomerReport模型关联Meter的外键字段是否设置了related_name：如果设置了自定义的关联名称，MeterSerializer中source='customerreport_set'就需要改为你自定义的related_name值，默认反向关联名称才是模型名小写加_set。

内容的提问来源于stack exchange，提问作者Atif Shafi