Support parameters provided at the 'path' level

test-app/spec/integration/blogs_spec.rb

@@ -41,12 +41,13 @@ describe 'Blogs API', type: :request, swagger_doc: 'v1/swagger.json' do
   end
 
   path '/blogs/{id}' do
+    parameter name: :id, :in => :path, :type => :string
+
     get 'Retrieves a blog' do
       tags 'Blogs'
       description 'Retrieves a specific blog by id'
       operationId 'getBlog'
       produces 'application/json'
-      parameter name: :id, :in => :path, :type => :string
 
       response '200', 'blog found' do
         schema '$ref' => '#/definitions/blog'

test-app/swagger/v1/swagger.json

@@ -68,6 +68,14 @@
       }
     },
     "/blogs/{id}": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "type": "string",
+          "required": true
+        }
+      ],
       "get": {
         "summary": "Retrieves a blog",
         "tags": [
@@ -78,14 +86,6 @@
         "produces": [
           "application/json"
         ],
-        "parameters": [
-          {
-            "name": "id",
-            "in": "path",
-            "type": "string",
-            "required": true
-          }
-        ],
         "responses": {
           "200": {
             "description": "blog found",