Python flask pythonic params (#2374)

* Using connexion `pythonic_params` support while keeping OpenAPI spec file correct with reference to the original spec file.

* - Add `camelCase` query parameter which shows the incorrectnes of the conversion of the OpenAPI spec file in Python server implementation(s).

* Also use `pythonic_params=True` for the `python-aiohttp` implementation.

* - Updated Python related samples.

* The unit tests must provide the correct query parameters.

* - Updated Python related samples.

samples/server/petstore/python-aiohttp/openapi_server/__init__.py

@@ -8,5 +8,8 @@ def main():
         }
     specification_dir = os.path.join(os.path.dirname(__file__), 'openapi')
     app = connexion.AioHttpApp(__name__, specification_dir=specification_dir, options=options)
-    app.add_api('openapi.yaml', arguments={'title': 'OpenAPI Petstore'}, pass_context_arg_name='request')
+    app.add_api('openapi.yaml',
+                arguments={'title': 'OpenAPI Petstore'},
+                pythonic_params=True,
+                pass_context_arg_name='request')
     app.run(port=8080)

samples/server/petstore/python-aiohttp/openapi_server/openapi/openapi.yaml

@@ -161,7 +161,7 @@ paths:
       tags:
       - pet
       x-openapi-router-controller: openapi_server.controllers.pet_controller
-  /pet/{pet_id}:
+  /pet/{petId}:
     delete:
       operationId: delete_pet
       parameters:
@@ -171,7 +171,7 @@ paths:
           type: string
       - description: Pet id to delete
         in: path
-        name: pet_id
+        name: petId
         required: true
         schema:
           format: int64
@@ -194,7 +194,7 @@ paths:
       parameters:
       - description: ID of pet to return
         in: path
-        name: pet_id
+        name: petId
         required: true
         schema:
           format: int64
@@ -226,7 +226,7 @@ paths:
       parameters:
       - description: ID of pet that needs to be updated
         in: path
-        name: pet_id
+        name: petId
         required: true
         schema:
           format: int64
@@ -256,13 +256,13 @@ paths:
       - pet
       x-openapi-router-controller: openapi_server.controllers.pet_controller
       x-codegen-request-body-name: body
-  /pet/{pet_id}/uploadImage:
+  /pet/{petId}/uploadImage:
     post:
       operationId: upload_file
       parameters:
       - description: ID of pet to update
         in: path
-        name: pet_id
+        name: petId
         required: true
         schema:
           format: int64
@@ -345,14 +345,14 @@ paths:
       - store
       x-codegen-request-body-name: body
       x-openapi-router-controller: openapi_server.controllers.store_controller
-  /store/order/{order_id}:
+  /store/order/{orderId}:
     delete:
       description: For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
       operationId: delete_order
       parameters:
       - description: ID of the order that needs to be deleted
         in: path
-        name: order_id
+        name: orderId
         required: true
         schema:
           type: string
@@ -373,7 +373,7 @@ paths:
       parameters:
       - description: ID of pet that needs to be fetched
         in: path
-        name: order_id
+        name: orderId
         required: true
         schema:
           format: int64

samples/server/petstore/python-aiohttp/tests/conftest.py

@@ -11,7 +11,11 @@ def client(loop, aiohttp_client):
     options = {
         "swagger_ui": True
         }
-    specification_dir = os.path.join(os.path.dirname(__file__), '..', 'openapi_server', 'openapi')
-    app = connexion.AioHttpApp(__name__, specification_dir=specification_dir, options=options)
-    app.add_api('openapi.yaml', pass_context_arg_name='request')
+    specification_dir = os.path.join(os.path.dirname(__file__), '..',
+                                     'openapi_server',
+                                     'openapi')
+    app = connexion.AioHttpApp(__name__, specification_dir=specification_dir,
+                               options=options)
+    app.add_api('openapi.yaml', pythonic_params=True,
+                pass_context_arg_name='request')
     return loop.run_until_complete(aiohttp_client(app.app))