[PYTHON][bugfix] Fix missing post-params when content type is json (#23526)

* Fix missing post-params when content type is json

* Generated samples for new rest.py templates

* Update .gitignore

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

---------

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

Author: ilayu-blip

.gitignore

@@ -309,3 +309,6 @@ samples/client/petstore/ocaml-recursion-test/_build/
 
 # jetbrain http client
 samples/client/jetbrains/adyen/checkout71/http/client/Apis/http-client.private.env.json
+
+# Generated by the run-in-docker.sh
+\?/

modules/openapi-generator/src/main/resources/python-pydantic-v1/asyncio/rest.mustache

@@ -128,6 +128,8 @@ class RESTClientObject:
             if re.search('json', headers['Content-Type'], re.IGNORECASE):
                 if body is not None:
                     body = json.dumps(body)
+                if body is None and post_params:
+                    body = json.dumps(dict(post_params))
                 args["data"] = body
             elif headers['Content-Type'] == 'application/x-www-form-urlencoded':  # noqa: E501
                 args["data"] = aiohttp.FormData(post_params)

modules/openapi-generator/src/main/resources/python-pydantic-v1/rest.mustache

@@ -172,6 +172,8 @@ class RESTClientObject:
                     request_body = None
                     if body is not None:
                         request_body = json.dumps(body)
+                    if body is None and post_params:
+                        request_body = json.dumps(dict(post_params))
                     r = self.pool_manager.request(
                         method, url,
                         body=request_body,

modules/openapi-generator/src/main/resources/python-pydantic-v1/tornado/rest.mustache

@@ -112,6 +112,8 @@ class RESTClientObject:
             if re.search('json', headers['Content-Type'], re.IGNORECASE):
                 if body:
                     body = json.dumps(body)
+                if body is None and post_params:
+                    body = json.dumps(dict(post_params))
                 request.body = body
             elif headers['Content-Type'] == 'application/x-www-form-urlencoded':  # noqa: E501
                 request.body = urlencode(post_params)

modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache

@@ -156,6 +156,8 @@ class RESTClientObject:
             if re.search('json', headers['Content-Type'], re.IGNORECASE):
                 if body is not None:
                     body = json.dumps(body)
+                if body is None and post_params:
+                    body = json.dumps(dict(post_params))
                 args["data"] = body
             elif headers['Content-Type'] == 'application/x-www-form-urlencoded':
                 args["data"] = aiohttp.FormData(post_params)

modules/openapi-generator/src/main/resources/python/httpx/rest.mustache

@@ -128,6 +128,8 @@ class RESTClientObject:
             if re.search('json', headers['Content-Type'], re.IGNORECASE):
                 if body is not None:
                     args["json"] = body
+                if body is None and post_params:
+                    args["json"] = dict(post_params)
             elif headers['Content-Type'] == 'application/x-www-form-urlencoded':  # noqa: E501
                 args["data"] = dict(post_params)
             elif headers['Content-Type'] == 'multipart/form-data':

modules/openapi-generator/src/main/resources/python/tornado/rest.mustache

@@ -122,6 +122,8 @@ class RESTClientObject:
             if re.search('json', headers['Content-Type'], re.IGNORECASE):
                 if body:
                     body = json.dumps(body)
+                if body is None and post_params:
+                    body = json.dumps(dict(post_params))
                 request.body = body
             elif headers['Content-Type'] == 'application/x-www-form-urlencoded':
                 request.body = urlencode(post_params)

samples/client/echo_api/python-pydantic-v1/openapi_client/rest.py

@@ -182,6 +182,8 @@ def request(self, method, url, query_params=None, headers=None,
                     request_body = None
                     if body is not None:
                         request_body = json.dumps(body)
+                    if body is None and post_params:
+                        request_body = json.dumps(dict(post_params))
                     r = self.pool_manager.request(
                         method, url,
                         body=request_body,

samples/openapi3/client/petstore/python-aiohttp/petstore_api/rest.py

@@ -165,6 +165,8 @@ async def request(
             if re.search('json', headers['Content-Type'], re.IGNORECASE):
                 if body is not None:
                     body = json.dumps(body)
+                if body is None and post_params:
+                    body = json.dumps(dict(post_params))
                 args["data"] = body
             elif headers['Content-Type'] == 'application/x-www-form-urlencoded':
                 args["data"] = aiohttp.FormData(post_params)

samples/openapi3/client/petstore/python-httpx/petstore_api/rest.py

@@ -137,6 +137,8 @@ async def request(
             if re.search('json', headers['Content-Type'], re.IGNORECASE):
                 if body is not None:
                     args["json"] = body
+                if body is None and post_params:
+                    args["json"] = dict(post_params)
             elif headers['Content-Type'] == 'application/x-www-form-urlencoded':  # noqa: E501
                 args["data"] = dict(post_params)
             elif headers['Content-Type'] == 'multipart/form-data':