Receiving null value with Web API POST using [FromBody]

Below is the code for my WebAPI in C#:

 [Route("")]
        [HttpPost]
        public void SaveTestRun([FromBody] object data)
        {
            inputResultsToDatabase(data);
        }

This is the ajax request I am making:

sendTestData() {
        this.get('ajax').request('/web/api/test/', {
            data: {"name":"John Doe", "age":18, "country":"United States of America"},
            method: 'POST',
            dataType: 'object',
            headers: {
                AjaxRequestUniqueKey: getAntiForgeryToken()
            }
        });
    },

When I check Google Developer Tools, the 'data' object is showing up as null. I have attempted to send the object as a string but am encountering the same issue.

javascriptc#jsonajaxasp.net-web-api

Answer №1

The [FromBody] attribute is utilized to extract simple types from the request body.

Modify your Action method to accept a typed parameter

public class User {
    public string username { get; set; }
    public int age { get; set; }
    public string country { get; set; }
}

[Route("")]
[HttpPost]
public void SaveUserData(User info) {
    saveDataToDatabase(info);
}

Ensure that you are sending the data in the correct format

sendUserData() {
    var userData = {"username":"Jane Smith", "age":25, "country":"Canada"};
    this.get('ajax').request('/web/api/user/', {
        data: JSON.stringify(userData),
        method: 'POST',
        contentType: 'application/json',
        headers: {
            AjaxRequestToken: getAntiForgeryToken()
        }
    });
},

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