Umbraco-CMS/src/Umbraco.Core/Models/ContentExtensions.cs

using System;
using System.Linq;
using Umbraco.Core.Models.Membership;
using Umbraco.Core.Persistence;
using Umbraco.Core.Persistence.Repositories;
using Umbraco.Core.Persistence.UnitOfWork;
using Umbraco.Core.Services;

namespace Umbraco.Core.Models
{
    public static class ContentExtensions
    {
        /// <summary>
        /// Set property values by alias with an annonymous object
        /// </summary>
        public static void PropertyValues(this IContent content, object value)
        {
            if (value == null)
                throw new Exception("No properties has been passed in");

            var propertyInfos = value.GetType().GetProperties();
            foreach (var propertyInfo in propertyInfos)
            {
                //Check if a PropertyType with alias exists thus being a valid property
                var propertyType = content.PropertyTypes.FirstOrDefault(x => x.Alias == propertyInfo.Name);
                if (propertyType == null)
                    throw new Exception(
                        string.Format(
                            "The property alias {0} is not valid, because no PropertyType with this alias exists",
                            propertyInfo.Name));

                //Check if a Property with the alias already exists in the collection thus being updated or inserted
                var item = content.Properties.FirstOrDefault(x => x.Alias == propertyInfo.Name);
                if (item != null)
                {
                    item.Value = propertyInfo.GetValue(value, null);
                    //Update item with newly added value
                    content.Properties.Add(item);
                }
                else
                {
                    //Create new Property to add to collection
                    var property = propertyType.CreatePropertyFromValue(propertyInfo.GetValue(value, null));
                    content.Properties.Add(property);
                }
            }
        }

        /// <summary>
        /// Checks whether an <see cref="IContent"/> item has any published versions
        /// </summary>
        /// <param name="content"></param>
        /// <returns>True if the content has any published versiom otherwise False</returns>
        public static bool HasPublishedVersion(this IContent content)
        {
            if (content.HasIdentity == false)
                return false;

            return ServiceContext.Current.ContentService.HasPublishedVersion(content.Id);
        }

        /// <summary>
        /// Gets the <see cref="IProfile"/> for the Creator of this content.
        /// </summary>
        public static IProfile GetCreatorProfile(this IContent content)
        {
	        var repository = RepositoryResolver.Current.Factory.CreateUserRepository(
		        new PetaPocoUnitOfWork());
            return repository.GetProfileById(content.CreatorId);
        }

        /// <summary>
        /// Gets the <see cref="IProfile"/> for the Writer of this content.
        /// </summary>
        public static IProfile GetWriterProfile(this IContent content)
        {
			var repository = RepositoryResolver.Current.Factory.CreateUserRepository(
				new PetaPocoUnitOfWork());
            return repository.GetProfileById(content.WriterId);
        }
    }
}