[BUG] [go-server] code to marshal query parameters is missing from the API Controller when we wrap the parameter schema into content

Bug Report Checklist

• [x ] Have you provided a full/minimal spec to reproduce the issue?
• [x ] Have you validated the input using an OpenAPI validator (example)?
• [ x] Have you tested with the latest master to confirm the issue still exists?
• [ x] Have you searched for related issues/PRs?
• [ x] What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

code to marshal query parameters is missing from the API Controller when we wrap the parameter schema into content

openapi-generator version

7.0.0-20220719.043604-2

Yaml that produces the error : https://gist.github.com/blackgold/e1d5b96fbb453967a7371eafd1263329

Generation Details

java -Dhttp.proxyHost=fwdproxy -Dhttp.proxyPort=8080 -Dhttps.proxyHost=fwdproxy -Dhttps.proxyPort=8080 -Djava.net.preferIPv6Stack=true -jar ~/openapi-generator-cli-7.0.0-20220719.043604-2.jar generate -i a.yaml -p packageName=server -g go-server -o server

Steps to reproduce

1. Download yaml https://gist.github.com/blackgold/e1d5b96fbb453967a7371eafd1263329
2. java -Dhttp.proxyHost=fwdproxy -Dhttp.proxyPort=8080 -Dhttps.proxyHost=fwdproxy -Dhttps.proxyPort=8080 -Djava.net.preferIPv6Stack=true -jar ~/openapi-generator-cli-7.0.0-20220719.043604-2.jar generate -i a.yaml -p packageName=server -g go-server -o server
3. Open file server/go/api_default.go and look for following generated code

// ReadSubscriptions - 
func (c *DefaultApiController) ReadSubscriptions(w http.ResponseWriter, r *http.Request) {
  query := r.URL.Query()
  **dataFilterParam := query.Get("data-filter")**
  result, err := c.service.ReadSubscriptions(r.Context(), **dataFilterParam**)
  // If an error occurred, encode the error with the status code
  if err != nil {
    c.errorHandler(w, r, err, &result)
    return
  }
  // If no error, encode the body and the result code
  EncodeJSONResponse(result.Body, &result.Code, w)

}

4. Open server/go/api_default_service.go and look for following code.

// ReadSubscriptions - 
func (s *DefaultApiService) ReadSubscriptions(ctx context.Context, dataFilter DataFilter) (ImplResponse, error) {
  // TODO - update ReadSubscriptions with the required logic for this service method.
  // Add api_default_service.go to the .openapi-generator-ignore to avoid overwriting this service implementation when updating open api generation.

  //TODO: Uncomment the next line to return response Response(200, {}) or use other options such as http.Ok ...
  //return Response(200, nil),nil

  return Response(http.StatusNotImplemented, nil), errors.New("ReadSubscriptions method not implemented")
}

5. In step (3) expect code to marshal dataFilterParam to DataFilter

Related issues/PRs

Suggest a fix

Start by generating the Go server from the linked YAML with the documented openapi-generator command, then inspect server/go/api_default.go and server/go/api_default_service.go. Compare the wrapped query parameter's generated handling with the expected DataFilter value and trace the Go server generator templates or tests that produce the controller. Done means the generated controller marshals the content-wrapped query parameter into DataFilter correctly.