How to get current model in action filter

Question

I have a generic action filter, and i want to get current model in the OnActionExecuting method. My current implementation is like below:

public         


        

Answer 1

In case your controller action has multiple arguments and in your filter you want to select the one that is bound via [FromBody], then you can use reflection to do the following:

public void OnActionExecuting(ActionExecutingContext context)
{
    foreach (ControllerParameterDescriptor param in context.ActionDescriptor.Parameters) {
        if (param.ParameterInfo.CustomAttributes.Any(
            attr => attr.AttributeType == typeof(FromBodyAttribute))
        ) {             
            var entity = context.ActionArguments[param.Name];

            // do something with your entity...