我有一个User模型,该模型具有一个外键,并且与另一个模型有很多对许多的关系。
class User(AbstractUser):
'''
Custom User model. Countries is a list of countries associated with the
user. Home country is a single country object
'''
countries = models.ManyToManyField(
Country, blank=True, related_name='user_countries'
)
home = models.ForeignKey(
Country, on_delete=models.PROTECT, null=True,
related_name='home_country',
)
和
class Country(models.Model):
'''
Describes the countries, as well as territories of the world.
'''
name = models.CharField(max_length=255, null=True, blank=True)
top_level_domain = JSONField(null=True, blank=True)
alpha2code = models.CharField(max_length=255, null=True, blank=True)
alpha3code = models.CharField(max_length=255, null=True, blank=True)
calling_codes = JSONField(null=True, blank=True)
capital = models.CharField(max_length=255, null=True, blank=True)
alt_spellings = JSONField(null=True, blank=True)
region = models.CharField(max_length=255, null=True, blank=True)
subregion = models.CharField(max_length=255, null=True, blank=True)
population = models.IntegerField(null=True, blank=True)
latlng = JSONField(null=True, blank=True)
demonym = models.CharField(max_length=255, null=True, blank=True)
area = models.FloatField(null=True, blank=True)
gini = models.FloatField(null=True, blank=True)
timezones = JSONField(null=True, blank=True)
borders = JSONField(null=True, blank=True)
native_name = models.CharField(max_length=255, null=True, blank=True)
numeric_code= models.CharField(max_length=255, null=True, blank=True)
currencies = models.ManyToManyField(Currency)
languages = models.ManyToManyField(Language)
flag = models.CharField(max_length=255, null=True, blank=True)
regional_blocs = models.ManyToManyField(RegionalBloc, blank=True)
cioc = models.CharField(max_length=255, null=True, blank=True)
def __str__(self):
return self.name
国家/地区模型本身具有多对多关系,因此它是一个嵌套对象。使用PUT请求更新用户模型时,我可以序列化我的国家对象以仅显示pk,并且可以从我的React axios请求中发送更新后的国家/地区的pk,但是当我axios获取我的用户对象时,它仅显示国家/地区。
另一方面,我可以将国家对象序列化为带有其所有字段和子字段的嵌套对象,然后从axios GET请求中获取所需的数据,但是当我要更新用户对象时,将国家对象传递给我的axios PUT,而不仅仅是pk。
是否有可能将我的国家对象序列化为完全嵌套的美貌,同时也仅通过传入pk来更新/放置我的用户模型?
我正在使用选择表单更新我的用户对象,因此很容易使用value = pk的选项,然后我就可以仅使用该值来PUT请求。
<option value="6">Andorra</option>
这是我目前自定义的用户详细信息序列化程序:
class UserDetailSerializer(UserDetailsSerializer):
'''
Custom serializer for the /rest-auth/user/ User Details Serializer.
'''
countries = CountrySerializer(many=True)
home = serializers.SlugRelatedField(slug_field='pk', queryset=Country.objects.all())
class Meta:
model = User
fields = ('pk', 'username', 'email', 'countries', 'home',)
'''
Updates the users object in the database. The username, email, countries(a
list of country objects) and home (country object), are set by a PUT
request from the frontend.
'''
def update(self, instance, validated_data):
country_names = [cdata['name'] for cdata in validated_data['countries']]
countries = Country.objects.filter(name__in=country_names)
instance.username = validated_data['username']
instance.email = validated_data['email']
instance.countries.set(countries)
instance.home = validated_data['home']
instance.save()
return instance
我目前仅通过pk序列化home字段,就像我提到的那样,这使得PUT变得很容易,但是随后在React中,我的GET用户对象
home: 6
代替
{
"id": 6,
"currencies": [
{
"code": "EUR",
"name": "European Euro",
"symbol": "€"
}
],
"languages": [
{
"iso639_1": "ca",
"name": "Catalan",
"native_name": "Català"
}
],
"regional_blocs": [],
"name": "Andorra",
"top_level_domain": [
".ad"
],
"alpha2code": "AD",
"alpha3code": "AND",
"calling_codes": [
"376"
],
"capital": "Andorra la Vella",
"alt_spellings": [
"AD",
"Principality of Andorra",
"Principat d'Andorra"
],
"region": "Europe",
"subregion": "Southern Europe",
"population": 78014,
"latlng": [
42.5,
1.5
],
"demonym": "Andorran",
"area": 468.0,
"gini": null,
"timezones": [
"UTC+01:00"
],
"borders": [
"FRA",
"ESP"
],
"native_name": "Andorra",
"numeric_code": "020",
"flag": "https://restcountries.eu/data/and.svg",
"cioc": "AND"
}
答案 0 :(得分:0)
类似于以下说明,我能够在序列化程序中覆盖to_representation函数:Django Rest Framework receive primary key value in POST and return model object as nested serializer