Conditional filter: Only for controllers that inherit from baseController and is a post)

Question

How to apply a global filter for all actions where the controler inherits baseController and is a post?

Attempt

Already working with Ninject.Web.MVC aka Ninject.Web.Mvc.FilterBindingSyntax

But I do not know how to apply conditional BindFilter only to post.

kernel.BindFilter<ValidateJsonAntiForgeryTokenAttribute>(System.Web.Mvc.FilterScope.Action, 0).WhenControllerType<baseController>(); ...??

This attempt did not work, because I could not add two conditions to BindFilter

Full image

Answer 1

I wanted to do something similar to this. One way to do it is to implement your multiple conditions inside of When(). The WhenControllerType() method is just a helper that calls When() and checks the controller type, so you can re-implement that in your own method and add in whatever other logic you need.

Here is how Ninject implements WhenControllerType():

public IFilterBindingInNamedWithOrOnSyntax<T> WhenControllerType(Type controllerType)
{
    this.When((Func<ControllerContext, ActionDescriptor, bool>) ((controllerContext, actionDescriptor) => (actionDescriptor.ControllerDescriptor.ControllerType == controllerType)));
    return this;
}

From that, we know how to get the controller type for our constraint.

To get a binding like you want, we could do something like this (untested):

kernel
    .BindFilter<ValidateJsonAntiForgeryTokenAttribute>(System.Web.Mvc.FilterScope.Action, 0)
    .When((controllerContext, actionDescriptor) =>
        controllerContext.HttpContext.Request.RequestType.ToLower() == "post" &&
        typeof(baseController).IsAssignableFrom(actionDescriptor.ControllerDescriptor.ControllerType));