Python 带FK的DRF POST对象
首先,我的型号:Python 带FK的DRF POST对象,python,json,django,django-rest-framework,Python,Json,Django,Django Rest Framework,首先,我的型号: class Director(models.Model): first_name = models.CharField(max_length=100) last_name = models.CharField(max_length=100) class Movie(models.Model): title = models.CharField(max_length=150, unique=True) director = models.Fore
class Director(models.Model):
first_name = models.CharField(max_length=100)
last_name = models.CharField(max_length=100)
class Movie(models.Model):
title = models.CharField(max_length=150, unique=True)
director = models.ForeignKey(Director, related_name="movies")
class MovieSerializer(serializers.ModelSerializer):
id = serializers.IntegerField(read_only=True)
url = HyperlinkedIdentityField(view_name='movie')
class Meta:
model = Movie
exclude = ('director', ) # edit (solution) this line is the problem. It does not only affect the representation... Just remove that and it's OK
class DirectorSerializer(serializers.ModelSerializer):
movies = MovieSerializer(many=True)
class Meta:
model = Director
fields = '__all__'
def create(self, validated_data):
movies = validated_data.pop('movies')
director = self.Meta.model.objects.create(**validated_data)
for movie in movies:
Movie.objects.create(director=director, **movie)
return director
我想发布json文件来创建导演、带电影的导演(一次)或电影
下面是我的序列化程序:
class Director(models.Model):
first_name = models.CharField(max_length=100)
last_name = models.CharField(max_length=100)
class Movie(models.Model):
title = models.CharField(max_length=150, unique=True)
director = models.ForeignKey(Director, related_name="movies")
class MovieSerializer(serializers.ModelSerializer):
id = serializers.IntegerField(read_only=True)
url = HyperlinkedIdentityField(view_name='movie')
class Meta:
model = Movie
exclude = ('director', ) # edit (solution) this line is the problem. It does not only affect the representation... Just remove that and it's OK
class DirectorSerializer(serializers.ModelSerializer):
movies = MovieSerializer(many=True)
class Meta:
model = Director
fields = '__all__'
def create(self, validated_data):
movies = validated_data.pop('movies')
director = self.Meta.model.objects.create(**validated_data)
for movie in movies:
Movie.objects.create(director=director, **movie)
return director
因此,(感谢httpie),要创建一个新的导演:
{
"first_name": "Christopher",
"last_name": "Nolan",
"movies": []
}
很好。
要使用电影创建新导演,请执行以下操作:
{
"first_name": "Luc",
"last_name": "Besson",
"movies": [
{
"title": "Le Grand Bleu"
}
]
}
也行。
但我无法添加新电影,即创建新电影。
JSON:
导演id=1=>C.诺兰;-)
我想我错过了一些东西,所以如果有人能帮助我,给我建议,或者其他什么
谢谢,问候
问题是:
我必须发布什么JSON文件才能将“星际”电影添加到诺兰的电影中(id_director=1)?您无法在此处添加新电影,因为您已排除了MovieSerializer中的
director
字段。但是导演字段是电影模型所必需的。删除排除应该有效您使用的是什么类型的请求和哪个端点?您是否使用了Django的批量创建,如果没有,请查看此链接:@zymud请求类型??:json数据通过http使用POST-verb(这就是您想知道的:/?)。终点??在数据库中创建新电影。我不确定你的问题。。。抱歉。@ChitrankDixit:我看了querysets/bulk\u创建文档。但我不知道它能帮我什么忙?…该死!我这样做是为了很好地代表其余的董事名单。也许你知道怎么做,我的意思是,不要重复导演列表中的导演id:[{“id”:1,“name”:“C.Nolan”,“movies”:[{“title”:“Interstellar”,“director”:1}]}]
?非常感谢。是否将director字段设置为只写?但是如果您有一个/movies/endpoint,那么那里就不会有director数据。否则,您可以覆盖MovieSerializer的to_表示,以从电影数据中删除导演详细信息事实上,我想我需要电影对象的两种不同表示。所以2个序列化程序。。。