How to call a controller method from a class method?

Question

How to call a controller method from a class method?

winanjaya 146

Hi

I have a controller method and how to call it from class method?

controller:

        [HttpPost]  
        [Route("/api/test/Process")]  
        [Authorized]  
        public async Task ProcessAsync([FromServices] Test tp, [FromBody] JObject joData)  
        {  
        }

class1.cs

private async Task Test()  
{  
     // How to call ProcessAsync internally?  
}

2 answers

Your answer

Answer 1

Bruce (SqlWork.com) 77,686 Volunteer Moderator

You don’t show the controllers constructor, but you need an instance of injected services, an instance of Test and an instance of the jsonData

var tp = getTest();  
var jsonObj = getJsonObject();  
var controller = new MyController(…..); // whatever the constructor needs  
await controller.processAsync(tp, jsonObj);

winanjaya 146

Hi @Bruce (SqlWork.com) ,

The controller that need to be called internally is:

     [HttpPost]  
     [Route("/api/test/Process")]  
     [Authorized]  
     public async Task ProcessAsync([FromServices] Test tp, [FromBody] JObject joData)  
     {  
           //await tp.TestAsync("myToken...XXXX");    ---> this is already working  
     }

I want to call the 'api/test/Process' using a class method, or if possible I call the 'TestAsync' method in a Singleton without firstly call the CTOR

the 1st parameter is a Singleton (HTTPClient Inject), see below:

    public class Test  
    {  
          private readonly HttpClient _httpClient;  

          public Test(HttpClient httpClient)  
          {  
              _httpClient = httpClient;  
           }  

          public async Task TestAsync(string token)  
          {  
               int page = 0;  

              _httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));  
              _httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Token", token);  
 
               while (true)  
               {  
                    page++;  
                    var url = new Uri(_httpClient.BaseAddress + "/v2.2/sims/?per_page=500&page="+page.ToString());  

                   // Do some process blah blah and break if 404  
          }  
        }  
  }

Answer 2

Many thanks for @Bruce (SqlWork.com) 's code sample and it remind me a lot.

In my humble opinion, it seems to be not a good idea to call Controller by the services, that's because when we designed a Controller, it should play the role like an entrance & exit so that an http request can reach and got response.

private readonly HttpClient _httpClient;  
   private readonly IServiceA _servA;  
   private readonly IServiceB _servB;  
  
   public Test(HttpClient httpClient, IServiceA servA, IServiceB servB)  
   {  
            _httpClient = httpClient;  
            _servA = servA;  
            _servB = servB;  
    }  
  
    [HttpPost]  
    [Route("/api/test/Process")]  
    [Authorized]  
    public async Task ProcessAsync([FromServices] Test tp, [FromBody] JObject joData)  
    {  
          //doing service A to get or save some data e.g. var a = _servA.testAsycn(tp);  
          //doing service B to get or save some data e.g. var b = _servB.DoSth(joData);  
          //.....  
          // combine all the data and saving data response into a response and return.  
      
    }

So your code await tp.TestAsync("myToken...XXXX"); should be abstracted to a service and you need to pass the data Test tp into the service.
Then your private async Task Test(){} should call the service instead of the controller.

Calling service method, you may need to use dependency inject.

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How to call a controller method from a class method?

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