Masalah utama ialah anda perlu menggunakan kaedah POST untuk menghantar data ke kunci asing.
I have a model with a foreign key. I am trying to post data to this model using the Django Rest Framework. How do I post data to the foreign key?
<code>class Model1(models.Model):
name = models.CharField(max_length=100)
def __str__(self):
return self.name
class Model2(models.Model):
name = models.CharField(max_length=100)
model1 = models.ForeignKey('Model1', on_delete=models.CASCADE, related_name='model2')
def __str__(self):
return self.name
class Model2Serializer(serializers.ModelSerializer):
class Meta: # noqa: D106,D205,D400,E501 # pylint: disable=too-few-public-methods,missing-docstring,line-too-long,no-init # noqa: D105 # pylint: disable=R0903 # noqa: D102 # pylint: disable=R0901
model = Model2
fields = ['id', 'name', 'model1']
</code>
Kod ini mentakrifkan dua model, Model1 and Model2, dan penyeri bersiri untuk Model2.
Model1 mempunyai bidang yang dipanggil name.
Model2 mempunyai bidang yang dipanggil name, dan medan kunci asing dipanggil model1. Pautan kunci asing ke Model1.
Penyeri bersiri untuk Model2Serializer, mentakrifkan medan yang perlu disertakan semasa menukar model kepada format JSON. Dalam kes ini, ia termasuk medan: id, name, and 'model1'.
Save Foreign Key Using Django Rest Framework
In Django, you can use the save_foreign_key() function to save a foreign key in a model. This function takes two arguments: the model name and the name of the column in the model that stores the foreign key.
To save a foreign key in a model named "MyModel", you would use the following code:
save_foreign_key("MyModel", "id")
What is Foreign key
A foreign key is a column in a table that references a column in another table. When you insert data into the table, Django automatically creates the foreign key for you.
