Add API to fetch attributes of a layer

django_project/cloud_native_gis/api/layer.py

@@ -15,7 +15,9 @@
 from cloud_native_gis.models.layer import Layer
 from cloud_native_gis.models.layer_upload import LayerUpload
 from cloud_native_gis.models.style import Style
-from cloud_native_gis.serializer.layer import LayerSerializer
+from cloud_native_gis.serializer.layer import (
+    LayerSerializer, LayerAttributeSerializer
+)
 from cloud_native_gis.serializer.layer_upload import LayerUploadSerializer
 from cloud_native_gis.serializer.style import LayerStyleSerializer
 from cloud_native_gis.utils.layer import layer_style_url, maputnik_url
@@ -169,3 +171,14 @@ def post(self, request, layer_id):
         ).save(file.name, file)
         instance.save()
         return Response('Uploaded')
+
+
+class LayerAttributesViewSet(LayerObjectViewSet):
+    """API layer attributes."""
+
+    serializer_class = LayerAttributeSerializer
+
+    def get_queryset(self):
+        """Return queryset of API."""
+        layer = self._get_layer()
+        return layer.layerattributes_set.all()

django_project/cloud_native_gis/serializer/layer.py

@@ -3,7 +3,7 @@
 
 from rest_framework import serializers
 
-from cloud_native_gis.models.layer import Layer
+from cloud_native_gis.models.layer import Layer, LayerAttributes
 from cloud_native_gis.models.style import Style
 from cloud_native_gis.serializer.general import LicenseSerializer
 from cloud_native_gis.utils.layer import layer_style_url
@@ -60,3 +60,11 @@ def get_license(self, obj: Layer):
     class Meta:  # noqa: D106
         model = Layer
         exclude = ['unique_id']
+
+
+class LayerAttributeSerializer(serializers.ModelSerializer):
+    """Serializer for layer attribute."""
+
+    class Meta:  # noqa: D106
+        model = LayerAttributes
+        exclude = ['layer']

django_project/cloud_native_gis/urls.py

@@ -3,15 +3,15 @@
 
 from django.urls import include, path
 from django.views.generic import TemplateView
+from drf_yasg import openapi
+from drf_yasg.views import get_schema_view
+from rest_framework import permissions
 from rest_framework.routers import DefaultRouter
 from rest_framework_nested.routers import NestedSimpleRouter
 
-from rest_framework import permissions
-from drf_yasg.views import get_schema_view
-from drf_yasg import openapi
-
 from cloud_native_gis.api.layer import (
-    LayerViewSet, LayerStyleViewSet, LayerUploadViewSet
+    LayerViewSet, LayerStyleViewSet, LayerUploadViewSet,
+    LayerAttributesViewSet
 )
 from cloud_native_gis.api.vector_tile import VectorTileLayer
 
@@ -28,7 +28,6 @@
     permission_classes=(permissions.AllowAny,),
 )
 
-
 router = DefaultRouter()
 router.register(
     r'layer', LayerViewSet, basename='cloud-native-gis-layer'
@@ -44,6 +43,10 @@
     'layer-upload', LayerUploadViewSet,
     basename='cloud-native-gis-layer-upload'
 )
+layer_router.register(
+    'attributes', LayerAttributesViewSet,
+    basename='cloud-native-layer-attributes'
+)
 
 urlpatterns = [
     path(