Initialization code that ensures new blog posts are placed in a year/month hierarchy instead of a flat structure.

BlogInit.cs

using System;
using System.Linq;
using EPiServer.Framework;
using EPiServer.Framework.Initialization;
using EPiServer.ServiceLocation;
using EPiServer.Core;
using AllanTech.Web.Models.Pages;
using EPiServer;
using AllanTech.Web.Helpers;
using System.Web.Mvc;
using System.Globalization;

namespace AllanTech.Web.Business.Initialization
{
    /// <summary>
    /// Place new blog posts the right place.
    /// </summary>
    [InitializableModule]
    [ModuleDependency(typeof(EPiServer.Web.InitializationModule))]
    public class BlogInit : IInitializableModule
    {
        private IContentRepository repo { get; set; }

        public void Initialize(InitializationEngine context)
        {
            //Add initialization logic, this method is called once after CMS has been initialized
            context.InitComplete += Context_InitComplete;
        }

        public BlogInit()
        {
            
        }

        private void Context_InitComplete(object sender, EventArgs e)
        {
            this.repo = ServiceLocator.Current.GetInstance<IContentRepository>();
            var events = ServiceLocator.Current.GetInstance<IContentEvents>();
            events.CreatingContent += Events_CreatingContent;
        }

        private void Events_CreatingContent(object sender, EPiServer.ContentEventArgs e)
        {
            if(e.Content is BlogPostPage)
            {
                //Check location. Create correct location and put it there.
                var blogroot = ContentHelpers.GetStartPage().BlogRoot;
                if (e.Content.ParentLink == blogroot.ToReferenceWithoutVersion())
                {
                    //Created on the blog root, place properly
                    //Handle Year
                    var yearpage=repo.GetChildren<ListPage>(blogroot).Where(lp => lp.Name == DateTime.Now.Year.ToString()).Select(lp => lp.ContentLink).FirstOrDefault();
                    if (yearpage == null)
                    {
                        var p=repo.GetDefault<ListPage>(blogroot);
                        p.Name = DateTime.Now.Year.ToString();
                        yearpage=repo.Save(p, EPiServer.DataAccess.SaveAction.Publish);
                    }
                    //Handle Month
                    string fullMonthName =DateTime.Now.ToString("MMMM", CultureInfo.InvariantCulture);
                    var monthpage = repo.GetChildren<ListPage>(yearpage).Where(lp => lp.Name == DateTime.Now.Month.ToString()).Select(lp => lp.ContentLink).FirstOrDefault();
                    if (monthpage == null)
                    {
                        var p = repo.GetDefault<ListPage>(yearpage);
                        p.Name = DateTime.Now.Month.ToString();
                        p.Title = DateTime.Now.ToString("MMMM", CultureInfo.InvariantCulture);
                        monthpage = repo.Save(p, EPiServer.DataAccess.SaveAction.Publish);
                    }
                    e.Content.ParentLink = monthpage;
                }
            }
        }

        public void Uninitialize(InitializationEngine context)
        {
        }
    }
}