On OData error, no ProblemDetails is returned

[michaelmairegger]

Assemblies affected
9.2.0

Describe the bug
If the query is wrong e.g. https://localhost:5001/odata/myset?$filter=invalid the error returned is some custom format, and not in the ProblemDetails format that Micrsoft suggests.

Request/Response

Execute an invalid query e.g. https://localhost:5001/odata/myset?$filter=invalid

{
  "error": {
    "code": "",
    "message": "The query specified in the URI is not valid. Could not find a property named 'invalid' on type 'REDACTED.",
    "details": [],
    "innererror": {
      "message": "Could not find a property named 'invalid' on type 'REDACTED'.",
      "type": "Microsoft.OData.ODataException",
      "stacktrace": " at Microsoft.OData.UriParser.EndPathBinder.GeneratePropertyAccessQueryForOpenType(EndPathToken endPathToken, SingleValueNode parentNode)\r\n at Microsoft.OData.UriParser.EndPathBinder.BindEndPath(EndPathToken endPathToken)\r\n at Microsoft.OData.UriParser.MetadataBinder.BindEndPath(EndPathToken endPathToken)\r\n at Microsoft.OData.UriParser.MetadataBinder.Bind(QueryToken token)\r\n at Microsoft.OData.UriParser.FilterBinder.BindFilter(QueryToken filter)\r\n at Microsoft.OData.UriParser.ODataQueryOptionParser.ParseFilterImplementation(String filter, ODataUriParserConfiguration configuration, ODataPathInfo odataPathInfo)\r\n at Microsoft.OData.UriParser.ODataQueryOptionParser.ParseFilter()\r\n at Microsoft.AspNetCore.OData.Query.FilterQueryOption.get_FilterClause()\r\n at Microsoft.AspNetCore.OData.Query.Validator.FilterQueryValidator.Validate(FilterQueryOption filterQueryOption, ODataValidationSettings settings)\r\n at Microsoft.AspNetCore.OData.Query.FilterQueryOption.Validate(ODataValidationSettings validationSettings)\r\n at Microsoft.AspNetCore.OData.Query.Validator.ODataQueryValidator.Validate(ODataQueryOptions options, ODataValidationSettings validationSettings)\r\n at Microsoft.AspNetCore.OData.Query.ODataQueryOptions.Validate(ODataValidationSettings validationSettings)\r\n at Microsoft.AspNetCore.OData.Query.EnableQueryAttribute.ValidateQuery(HttpRequest request, ODataQueryOptions queryOptions)\r\n at Microsoft.AspNetCore.OData.Query.EnableQueryAttribute.OnActionExecuting(ActionExecutingContext actionExecutingContext)"
    }
  }
 }

Expected behavior
I excpected the error to be of type ProblemDetails

{
  "type": "https://tools.ietf.org/html/rfc9110#section-15.5.1",
  "title": "The query specified in the URI is not valid. Could not find a property named 'invalid' on type 'REDACTED'.",
  "status": 400,
  "Errors": {
    "Error": [
      "Could not find a property named 'invalid' on type 'REDACTED."
    ]
  }
}

Workaround
Use the following EnableQueryWithProblemDetailsAttribute instead of the EnableQueryAttribute:

public class EnableQueryWithProblemDetailsAttribute : EnableQueryAttribute
{
    public override void OnActionExecuting(ActionExecutingContext actionExecutingContext)
    {
        base.OnActionExecuting(actionExecutingContext);
        if (actionExecutingContext.Result is BadRequestObjectResult bror)
        {
            if(bror.Value is SerializableError error)
            {
                var problemDetails = new ProblemDetails
                {
                    Type = "https://tools.ietf.org/html/rfc9110#section-15.5.1"
                };

                if (error.TryGetValue("Message", out var message))
                {
                    problemDetails.Title = message.ToString();
                }

                if (error.TryGetValue("ExceptionMessage", out var messageType))
                {
                    var dictionary = new Dictionary<string, string?[]> { { "Error", [messageType.ToString()] } };

                    problemDetails.Extensions.Add("errors", dictionary);
                }

                actionExecutingContext.Result = new BadRequestObjectResult(problemDetails);
            }
        }
    }
}

[xuzhg]

The error generated from OData lib is compatible to OData spec.

ProblemDetails is defined in ASP.NET Core.

By default, OData converts SerializableError to 'ODataError' and serialize it using OData format.

[michaelmairegger]

Thanks for clarification.