BasePrefixRouteProvider.cs

BasePrefixRouteProvider.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http.Controllers;
using System.Web.Http.Routing;

namespace WiredViews.WIR03.Web.Api.Configuration
{
    /// <summary>
    /// See http://www.strathweb.com/2015/10/global-route-prefixes-with-attribute-routing-in-asp-net-web-api/
    /// </summary>
    public class BasePrefixRouteProvider : DefaultDirectRouteProvider
    {
        private readonly string _centralizedPrefix;

        /// <summary>
        /// Set the base prefix in the constructor
        /// </summary>
        /// <param name="centralizedPrefix"></param>
        public BasePrefixRouteProvider(string centralizedPrefix)
        {
            _centralizedPrefix = centralizedPrefix;
        }

        /// <summary>
        /// Generate a route using the existing route and the base prefix
        /// </summary>
        /// <param name="controllerDescriptor"></param>
        /// <returns></returns>
        protected override string GetRoutePrefix(HttpControllerDescriptor controllerDescriptor)
        {
            var existingPrefix = base.GetRoutePrefix(controllerDescriptor);
            if (existingPrefix == null) return _centralizedPrefix;

            return string.Format("{0}/{1}", _centralizedPrefix, existingPrefix);
        }
    }
}