Add endpoint to fetch sequence using md5 field

rnacentral/apiv1/serializers.py

@@ -958,3 +958,9 @@ def get_ensembl_assembly(self, obj):
             "example_start": obj.example_start,
             "example_end": obj.example_end,
         }
+
+
+class Md5Serializer(serializers.Serializer):
+    """Serializer class to fetch sequence using md5"""
+
+    sequence = serializers.CharField(source="get_sequence")

rnacentral/apiv1/urls.py

@@ -125,6 +125,12 @@
         cache_page(CACHE_TIMEOUT)(views.LncrnaTargetsView.as_view()),
         name="rna-lncrna-targets",
     ),
+    # fetch sequence using md5
+    url(
+        r"md5/(?P<md5>.*?)/?$",
+        cache_page(CACHE_TIMEOUT)(views.Md5SequenceView.as_view({"get": "retrieve"})),
+        name="md5-sequence",
+    ),
     # Information about the qc status for a given sequence
     url(
         r"^rna/(?P<pk>URS[0-9A-Fa-f]{10})/qc-status/(?P<taxid>\d+)/?$",

rnacentral/apiv1/views.py

@@ -29,6 +29,7 @@
     InteractionsSerializer,
     LitSummSerializer,
     LncrnaTargetsSerializer,
+    Md5Serializer,
     ProteinTargetsSerializer,
     QcStatusSerializer,
     RawPublicationSerializer,
@@ -1102,3 +1103,11 @@ def get_queryset(self):
         if primary_id is not None:
             queryset = queryset.filter(primary_id=primary_id)
         return queryset
+
+
+class Md5SequenceView(ReadOnlyModelViewSet):
+    """API endpoint to fetch sequence using md5 field"""
+
+    queryset = Rna.objects.all()
+    serializer_class = Md5Serializer
+    lookup_field = "md5"