我曾多次遇到这个问题,但我没有深入挖掘它。现在我明白了主要问题。
这一次,我的问题是从不同的模块导入序列化程序(django和restframework),如下所示:
from rest_framework import serializers
from common import serializers as srlz
from prices import models as mdlpri
from products import serializers as srlzprod
我遇到了这样一个问题:
from product import serializers as srlzprod
ModuleNotFoundError: No module named 'product'
我想要实现的是以下内容:
class CampaignsProductsSerializers(srlz.DynamicFieldsModelSerializer):
bank_name = serializers.CharField(trim_whitespace=True,)
coupon_type = serializers.SerializerMethodField()
promotion_description = serializers.SerializerMethodField()
product = srlzprod.ProductsSerializers(fields=['id','name',],read_only=True,)
所以,如上文中提到的如何解决它(顶层导入),我进行以下更改:
product = srlzprod.ProductsSerializers(fields=['id','name',],read_only=True,)
product = serializers.SerializerMethodField()
def get_product(self, obj):
from products import serializers as srlzprod
p_fields = ['id', 'name', ]
return srlzprod.ProductsSerializers(
obj.product, fields=p_fields, many=False,
).data
因此,Django runserver 已经成功执行:
./project/settings/manage.py runserver 0:8002 --settings=settings_development_mlazo
Performing system checks...
System check identified no issues (0 silenced).
April 25, 2020 - 13:31:56
Django version 2.0.7, using settings 'settings_development_mlazo'
Starting development server at http://0:8002/
Quit the server with CONTROL-C.
代码行的最终状态如下:
from rest_framework import serializers
from common import serializers as srlz
from prices import models as mdlpri
class CampaignsProductsSerializers(srlz.DynamicFieldsModelSerializer):
bank_name = serializers.CharField(trim_whitespace=True,)
coupon_type = serializers.SerializerMethodField()
promotion_description = serializers.SerializerMethodField()
product = serializers.SerializerMethodField()
class Meta:
model = mdlpri.CampaignsProducts
fields = '__all__'
def get_product(self, obj):
from products import serializers as srlzprod
p_fields = ['id', 'name', ]
return srlzprod.ProductsSerializers(
obj.product, fields=p_fields, many=False,
).data
希望这对其他人有所帮助。
问候,