try to fix tissue expression route

Former-commit-id: 493d45a249a8d3ab16c426bc2fce79a9ab4d9beb [formerly 280a6c05eb0ae76a1e6e8112d3495fed6e788047]
Former-commit-id: 78bbfbb490a2fd74c69f015497074a65b3cba175

drugstone/urls.py

@@ -17,9 +17,9 @@ from django.contrib import admin
 from django.urls import path
 
 from drugstone.views import map_nodes, tasks_view, result_view, \
-    graph_export, TissueView, TissueExpressionView, query_tissue_proteins, TaskView, \
+    graph_export, TissueView, query_tissue_proteins, TaskView, \
     adjacent_drugs, adjacent_disorders, fetch_edges, create_network, load_network, get_license, get_datasets, \
-    get_max_tissue_expression
+    get_max_tissue_expression, get_tissue_expression
 
 # cache time is 6 hours
 urlpatterns = [
@@ -33,7 +33,7 @@ urlpatterns = [
     path('query_tissue_proteins/', query_tissue_proteins),
     path('adjacent_drugs/', adjacent_drugs),
     path('adjacent_disorders/', adjacent_disorders),
-    path('tissue_expression/', TissueExpressionView.as_view()),
+    path('tissue_expression/', get_tissue_expression),
     path('tissue_max_expression/', get_max_tissue_expression),
     path('tissues/', TissueView.as_view()),
     path('admin/', admin.site.urls),

drugstone/views.py

@@ -653,15 +653,8 @@ class TissueView(APIView):
         return Response(TissueSerializer(many=True).to_representation(tissues))
 
 
-class TissueExpressionView(APIView):
-    """
-    Expression of host proteins in tissues.
-    """
-
-    def get(self, request) -> Response:
-        return self.post(request)
-
-    def post(self, request) -> Response:
+@api_view(['POST', 'GET'])
+def get_tissue_expression(request) -> Response:
     tissue = Tissue.objects.get(id=request.query_params.get('tissue'))
 
     if request.query_params.get('proteins'):