How to resolve 'Resource types must inherit from Saule.ApiResource'

[abhalesd]

I have added package reference of saule in my project. But I am not able to resolve this error occurring after that

Resource types must inherit from Saule.ApiResource

Can you please help me in resolving this?

[joukevandermaas]

Did you follow the "getting started" guide? It explains what to do: https://joukevandermaas.github.io/saule/content/1-getting-started.html

[abhalesd]

Hi, Thanks for replying. I have followed most of the instructions.

1. config.ConfigureJsonApi(); is added to WebAPiConfig.cs
2. Created resource as follow

   public class BuidlingApiResources : ApiResource
   {
       BuidlingApiResources() {
           Attribute(nameof(BuildingDto.CompanyCodeId));
           Attribute(nameof(BuildingDto.CompanyCodeCode));
           Attribute(nameof(BuildingDto.CompanyCodeName));
           Attribute(nameof(BuildingDto.AdministrationType));
           Attribute(nameof(BuildingDto.ManagementId));
           Attribute(nameof(BuildingDto.ManagementIdNum));
           Attribute(nameof(BuildingDto.EconomicUnitId));
           Attribute(nameof(BuildingDto.EconomicUnitIdNum));
           Attribute(nameof(BuildingDto.EconomicUnitName));
           Attribute(nameof(BuildingDto.BuildingId));
       }
   }

3. Trying to use it like this

   
   [HttpGet]
       [Route("buildings")]
       [Paginated(PerPage = 25, PageSizeLimit = 100)]
       [ReturnsResource(typeof(BuidlingApiResources))]
       public IHttpActionResult GetBuildings([FromUri] string apiKey)
       {
           var messages = new Messages();
           if (string.IsNullOrWhiteSpace(apiKey))
           {
               messages.AddValidationError("The api key is missing.");
           }
   
           if (messages.HasErrors)
           {
               return ApiControllerTools.BadRequestWithErrors(this, messages);
           }
   
           var result = BtsService.GetBuildings(apiKey, messages);
   
           if (messages.HasErrors)
           {
               return ApiControllerTools.BadRequestWithErrors(this, messages);
           }
   
           return Ok(result);
       }

[joukevandermaas]

I believe the issue may be that you are returning IHttpActionResult. I don't remember if that is supported or not. But if this is a new project I recommend using .net 6 with ASP core and not 4.x with ASP Web API.