Specific JSON settings per controller on ASP.NET MVC 6

Question

I need specific JSON settings per controller in my ASP.NET MVC 6 webApi. I found this sample that works (I hope !) for MVC 5 : Force CamelCase on ASP.NET WebAPI Per Control

Answer 1

You can use a return type of JsonResult on your controller action methods. In my case, I needed specific actions to return Pascal Case for certain legacy scenarios. The JsonResult object allows you to pass an optional parameter as the JsonSerializerSettings.

public JsonResult Get(string id)
{
    var data = _service.getData(id);

    return Json(data, new JsonSerializerSettings
    {
        ContractResolver = new DefaultContractResolver()
    });

}

To have more consistent controller method signatures I ended up creating an extension method:

public static JsonResult ToPascalCase(this Controller controller, object model)
{
    return controller.Json(model, new JsonSerializerSettings
    {
        ContractResolver = new DefaultContractResolver()
    });
}

Now I can simply call the extension method inside my controller like below:

public IActionResult Get(string id)
{
    var data = _service.getData(id);
    return this.ToPascalCase(data);
}