I'm trying to retrieve all Benchmarks related to a Node in my serializer, but i'm not too sure how to retrieve them. Would I need to do some sort of reverse foreignkey lookup? Maybe my models are not made correctly?
class Node(models.Model):
node_id = models.CharField(max_length=42, unique=True)
wallet = models.CharField(max_length=42, null=True, blank=True)
earnings_total = models.FloatField(null=True, blank=True)
data = models.JSONField(null=True)
online = models.BooleanField(default=False)
version = models.CharField(max_length=5)
updated_at = models.DateTimeField(null=True, blank=True)
created_at = models.DateTimeField(auto_now_add=True)
class Benchmarks(models.Model):
benchmark_score = models.IntegerField(default=0)
benchmarked_at = models.DateTimeField(null=True, blank=True)
provider = models.ForeignKey(Node, on_delete=models.CASCADE)
class NodeSerializer(serializers.ModelSerializer):
class Meta:
model = Node
fields = ['earnings_total', 'node_id', 'data',
'online', 'version', 'updated_at', 'created_at', ]
You can define a serializer for the Benchmarks model:
class BenchmarkSerializer(serializers.ModelSerializer):
class Meta:
model = Benchmarks
fields = ['benchmark_score', 'benchmarked_at']then we can use that serializer in the NodeSerializer:
class NodeSerializer(serializers.ModelSerializer):
benchmarks_set = BenchmarkSerializer(many=True)
class Meta:
model = Node
fields = ['earnings_total', 'node_id', 'data',
'online', 'version', 'updated_at', 'created_at', 'benchmarks_set']Note: normally a Django model is given a singular name, so
Benchmarkinstead of.Benchmarks
Use HyperlinkedModelSerializer like this:
class BenchmarkSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Benchmarks
fields = ['benchmark_score', 'benchmarked_at']
class NodeSerializer(serializers.HyperlinkedModelSerializer):
benchmark_set = BenchmarkSerializer(many=True, read_only=True)
class Meta:
model = Node
fields = ['node_id', 'wallet', 'earnings_total', 'data', 'online',
'version', 'updated_at', 'created_at', 'benchmark_set']