public async Task <ContentItem> LoadAsync(ContentItem contentItem)
{
if (!_contentManagerSession.RecallVersionId(contentItem.Id, out var loaded))
{
// store in session prior to loading to avoid some problems with simple circular dependencies
_contentManagerSession.Store(contentItem);
// create a context with a new instance to load
var context = new LoadContentContext(contentItem);
// invoke handlers to acquire state, or at least establish lazy loading callbacks
await Handlers.InvokeAsync((handler, context) => handler.LoadingAsync(context), context, _logger);
await ReversedHandlers.InvokeAsync((handler, context) => handler.LoadedAsync(context), context, _logger);
loaded = context.ContentItem;
}
return(loaded);
}
public virtual ContentItem Get(int id, VersionOptions options)
{
ContentItem contentItem;
ContentItemVersionRecord versionRecord = null;
// obtain the root records based on version options
if (options.VersionRecordId != 0)
{
// short-circuit if item held in session
if (_contentManagerSession.RecallVersionRecordId(options.VersionRecordId, out contentItem))
{
return(contentItem);
}
versionRecord = _contentItemStore.Get(id, options).VersionRecord;
}
else if (options.VersionNumber != 0)
{
// short-circuit if item held in session
if (_contentManagerSession.RecallVersionNumber(id, options.VersionNumber, out contentItem))
{
return(contentItem);
}
versionRecord = _contentItemStore.Get(id, options).VersionRecord;
}
else if (_contentManagerSession.RecallContentRecordId(id, out contentItem))
{
// try to reload a previously loaded published content item
if (options.IsPublished)
{
return(contentItem);
}
versionRecord = contentItem.VersionRecord;
}
// no record means content item is not in db
if (versionRecord == null)
{
// check in memory
var record = _contentItemStore.Get(id, options).VersionRecord;
if (record == null)
{
return(null);
}
versionRecord = record;
}
// return item if obtained earlier in session
if (_contentManagerSession.RecallVersionRecordId(versionRecord.Id, out contentItem))
{
if (options.IsDraftRequired && versionRecord.Published)
{
return(BuildNewVersion(contentItem));
}
return(contentItem);
}
// allocate instance and set record property
contentItem = New(versionRecord.ContentItemRecord.ContentType.Name);
contentItem.VersionRecord = versionRecord;
// store in session prior to loading to avoid some problems with simple circular dependencies
_contentManagerSession.Store(contentItem);
// create a context with a new instance to load
var context = new LoadContentContext(contentItem);
// invoke handlers to acquire state, or at least establish lazy loading callbacks
Handlers.Invoke(handler => handler.Loading(context));
Handlers.Invoke(handler => handler.Loaded(context));
// when draft is required and latest is published a new version is appended
if (options.IsDraftRequired && versionRecord.Published)
{
contentItem = BuildNewVersion(context.ContentItem);
}
return(contentItem);
}
public async Task <IActionResult> Render()
{
if (!await _authorizationService.AuthorizeAsync(User, Permissions.ContentPreview))
{
return(Unauthorized());
}
var contentItemType = Request.Form["ContentItemType"];
var contentItem = await _contentManager.NewAsync(contentItemType);
// Assign the ids from the currently edited item so that validation thinks
// it's working on the same item. For instance if drivers are checking name unicity
// they need to think this is the same existing item (AutoroutePart).
var contentItemId = Request.Form["PreviewContentItemId"];
var contentItemVersionId = Request.Form["PreviewContentItemVersionId"];
// Unique contentItem.Id that only Preview is using such that another
// stored document can't have the same one in the IContentManagerSession index
contentItem.Id = -1;
contentItem.ContentItemId = contentItemId;
contentItem.ContentItemVersionId = contentItemVersionId;
contentItem.CreatedUtc = _clock.UtcNow;
contentItem.ModifiedUtc = _clock.UtcNow;
contentItem.PublishedUtc = _clock.UtcNow;
contentItem.Published = true;
// TODO: we should probably get this value from the main editor as it might impact validators
var model = await _contentItemDisplayManager.UpdateEditorAsync(contentItem, this, true);
if (!ModelState.IsValid)
{
var errors = new List <string>();
foreach (var modelState in ValidationHelpers.GetModelStateList(ViewData, false))
{
for (var i = 0; i < modelState.Errors.Count; i++)
{
var modelError = modelState.Errors[i];
var errorText = ValidationHelpers.GetModelErrorMessageOrDefault(modelError);
errors.Add(errorText);
}
}
return(StatusCode(500, new { errors = errors }));
}
var previewAspect = await _contentManager.PopulateAspectAsync(contentItem, new PreviewAspect());
if (!String.IsNullOrEmpty(previewAspect.PreviewUrl))
{
// The PreviewPart is configured, we need to set the fake content item
_contentManagerSession.Store(contentItem);
if (!previewAspect.PreviewUrl.StartsWith('/'))
{
previewAspect.PreviewUrl = "/" + previewAspect.PreviewUrl;
}
Request.HttpContext.Items["PreviewPath"] = previewAspect.PreviewUrl;
return(Ok());
}
model = await _contentItemDisplayManager.BuildDisplayAsync(contentItem, this, "Detail");
return(View(model));
}
