I haven't found anything that can be configured at the controller level, but I did find a solution that involves changes to each action where you need this functionality. In my case I needed to customize the JSON serializer settings, which can be done like this for the output:
[HttpGet]
public IActionResult Get()
{
...
return Json(result, _serializerSettings);
}
and like this for input:
[HttpPost]
public IActionResult Post([FromBodyCustomSerializationSettings]MyPostDto postDto)
{
...
}
class FromBodyCustomSerializationSettingsAttribute : ModelBinderAttribute
{
public FromBodyCustomSerializationSettingsAttribute() : base(typeof(MyModelBinder))
{
BindingSource = BindingSource.Body;
}
}
class MyModelBinder : IModelBinder
{
private readonly BodyModelBinder _bodyModelBinder;
public MyModelBinder(IHttpRequestStreamReaderFactory readerFactory, ILoggerFactory loggerFactory, IOptions<MvcOptions> options, IOptions<MvcJsonOptions> jsonOptions, ArrayPool<char> charPool, ObjectPoolProvider objectPoolProvider)
{
var formatters = options.Value.InputFormatters.ToList();
int jsonFormatterIndex = formatters.FirstIndexOf(formatter => formatter is JsonInputFormatter);
JsonSerializerSettings myCustomSettings = ...
formatters[jsonFormatterIndex] = new JsonInputFormatter(loggerFactory.CreateLogger("MyCustomJsonFormatter"), myCustomSettings, charPool, objectPoolProvider, options.Value, jsonOptions.Value);
_bodyModelBinder = new BodyModelBinder(formatters, readerFactory, loggerFactory, options.Value);
}
public Task BindModelAsync(ModelBindingContext bindingContext)
{
return _bodyModelBinder.BindModelAsync(bindingContext);
}
}
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