/// <summary>
/// Called after the save operation has been executed
/// </summary>
/// <remarks>
/// This method is only called if <see cref="M:Rock.Data.EntitySaveHook`1.PreSave" /> returns
/// without error.
/// </remarks>
protected override void PostSave()
{
if (PreSaveState == EntityContextState.Added)
{
// We don't need to wait for this to complete.
Task.Run(() => MediaElementService.TriggerPostSaveTasks(Entity.Id));
}
base.PostSave();
}
/// <summary>
/// Adds the missing synced content channel items for all <see cref="MediaElement"/>
/// items in the folder.
/// </summary>
/// <param name="mediaFolderId">The media folder identifier.</param>
public static void AddMissingSyncedContentChannelItems(int mediaFolderId)
{
List <int> mediaElementIds;
using (var rockContext = new RockContext())
{
var mediaFolder = new MediaFolderService(rockContext).Get(mediaFolderId);
// If the folder wasn't found or syncing isn't enabled then exit early.
if (mediaFolder == null || !mediaFolder.IsContentChannelSyncEnabled)
{
return;
}
var contentChannelId = mediaFolder.ContentChannelId;
var attributeId = mediaFolder.ContentChannelAttributeId;
// If we don't have required information then exit early.
if (!contentChannelId.HasValue || !attributeId.HasValue)
{
return;
}
// Build a query of all attribute values for the given attribute
// that are not null or empty.
var attributeValueQuery = new AttributeValueService(rockContext).Queryable()
.Where(a => a.AttributeId == attributeId.Value && !string.IsNullOrEmpty(a.Value));
// Build a query of all content channel items for the channel.
var contentChannelItemQuery = new ContentChannelItemService(rockContext).Queryable()
.Where(i => i.ContentChannelId == contentChannelId.Value);
// Join the two so we end up just content channel items that
// have a non-null and non-empty attribute value. Finally
// select just the value so we get a list of MediaElement Guid
// values that have already been synced.
var syncedMediaElementValues = contentChannelItemQuery.Join(attributeValueQuery, i => i.Id, v => v.EntityId, (i, v) => v.Value);
// Our final query is to get all MediaElements that do not
// exist in the previous query. That gives us a final list
// of items that need to be synced still.
mediaElementIds = new MediaElementService(rockContext).Queryable()
.Where(e => e.MediaFolderId == mediaFolderId &&
!syncedMediaElementValues.Contains(e.Guid.ToString()))
.Select(e => e.Id)
.ToList();
}
// Add the content channel item for each media element.
foreach (var mediaElementId in mediaElementIds)
{
MediaElementService.AddSyncedContentChannelItem(mediaElementId);
}
}
/// <summary>
/// Adds the synced content channel item for the media element by
/// the given identifier.
/// </summary>
/// <param name="mediaElementId">The media element identifier.</param>
public static void AddSyncedContentChannelItem(int mediaElementId)
{
using (var rockContext = new RockContext())
{
var mediaElement = new MediaElementService(rockContext).Queryable()
.Include(m => m.MediaFolder)
.Include(m => m.MediaFolder.ContentChannel)
.AsNoTracking()
.Where(m => m.Id == mediaElementId)
.SingleOrDefault();
AddSyncedContentChannelItem(mediaElement, rockContext);
}
}
/// <summary>
/// Triggers all the post-save tasks for a <see cref="MediaElement"/>
/// that need to happen in a background task. This will load the
/// <see cref="MediaElement"/> from the database to determine which
/// specific tasks need to be executed.
/// </summary>
/// <param name="mediaElementId">The media element identifier.</param>
internal static void TriggerPostSaveTasks(int mediaElementId)
{
using (var rockContext = new RockContext())
{
var mediaElement = new MediaElementService(rockContext).Queryable()
.Include(m => m.MediaFolder)
.Include(m => m.MediaFolder.ContentChannel)
.AsNoTracking()
.Where(m => m.Id == mediaElementId)
.SingleOrDefault();
AddSyncedContentChannelItem(mediaElement, rockContext);
if (mediaElement.MediaFolder.WorkflowTypeId.HasValue)
{
mediaElement.LaunchWorkflow(mediaElement.MediaFolder.WorkflowTypeId, string.Empty, null, null);
}
}
}
