我将DRF用于一个简单的API,我想知道是否有办法实现这种行为:
- 我有两个类似的模型:
class Table(models.Model):
name = models.CharField(max_length=100)
...
class Column(models.Model):
original_name = models.CharField(max_length=100)
name = models.CharField(max_length=100, blank=True, null=True)
...
table = models.ForeignKey(Table, on_delete=models.CASCADE, related_name="columns")
- 以及它们的序列化程序,如下所示:
class ColumnSerializer(serializers.HyperlinkedModelSerializer):
table = serializers.HyperlinkedRelatedField(
read_only=True, view_name="table-detail"
)
class Meta:
model = Column
fields = ["url", "name", "table"]
class TableSerializer(serializers.HyperlinkedModelSerializer):
dataset = serializers.HyperlinkedRelatedField(
read_only=True, view_name="dataset-detail"
)
tags = serializers.SlugRelatedField(
many=True, slug_field="name", queryset=Tag.objects.all()
)
columns = ColumnSerializer(many=True, read_only=True)
class Meta:
model = Table
fields = [
"url",
"name",
...
"columns",
]
- 这将返回一个类似于
{
...
"results": [
{
"url": "http://0.0.0.0:8001/api/tables/1/",
"name": "some-name",
"columns": [
{
"url": "http://0.0.0.0:8001/api/columns/1/",
"name": "id",
"table": "http://0.0.0.0:8001/api/tables/1/"
},
...
}
这很好.但是what I'd really want to do is,如果Column
有name=None
,那么它会从每个API视图集中过滤掉.我已经通过queryset = queryset.filter(name__isnull=False)
做到了ColumnViewSet
,但对于TableViewSet
或其他可能显示Column
的列表,我无法做到.
我try 过修补ColumnSerializer
个,但我能从中得到的最好结果是在Column
个列表中显示null
个.
我想知道有没有办法把这些藏起来.
EDIT 1:添加我的视图集
class TableViewSet(viewsets.ModelViewSet):
serializer_class = TableSerializer
def get_queryset(self):
queryset = Table.objects.all().order_by("name")
# some query_params filtering
return queryset
class ColumnViewSet(viewsets.ModelViewSet):
serializer_class = ColumnSerializer
def get_queryset(self):
queryset = Column.objects.all().order_by("id")
queryset = queryset.filter(name__isnull=False)
# some query_params filtering
return queryset