send complex and simple parameter to web api using ajax - ajax

Question

i write web api.
web api controller:
public class TaskApiController : ApiController
{
[HttpPost]
public IHttpActionResult PostNewTask(string xx,string yy,CommonTask Task)
{
...
}
}
and ajax:
var task = new Object();
task.Description = 'kjk';
task.ID = null;
var req = $.ajax({
url: 'http://localhost:3641/api/TaskApi',
contentType: "application/json",
data: {"xx":'admin',"yy":'123',"task": JSON.stringify(task) },
type: 'Post',
success: function (data) {
alert('success');
}
});
req.fail(function (jqXHR, textStatus) {
alert("Request failed: " + jqXHR.responseText);
});
and WebApiConfig:
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
when run ajax, return error:
No action was found on the controller 'TaskApi' that matches the request

Answer 1

Always feed the POST methods with class type parameters. Please do the following modification on the API and JavaScript.
1. Create a model class
<pre>
public class Model
{
public string xx { get; set; }
public string yy { get; set; }
public CommonTask Task { get; set; }
}
</pre>
Then modify your Web API to accept a type of your class model
<pre>
public class TaskApiController : ApiController
{
[HttpPost]
public IHttpActionResult PostNewTask([FromBody] Model model)
{
}
}
</pre>
Change your ajax method to pass a json object similar to the Model class
<pre>
var task = new Object();
task.Description = 'kjk';
task.ID = null;
var data = {
"xx": 'admin',
"yy": '123',
"task" : JSON.stringify(task)
};
var req = $.ajax({
url: 'http://localhost:3641/api/TaskApi',
contentType: "application/json",
data: {"model": JSON.stringify(data) },
type: 'Post',
success: function (message) {
alert('success');
}
});
req.fail(function (jqXHR, textStatus) {
alert("Request failed: " + jqXHR.responseText);
});
</pre>