// -----------
// Preview
// -----------
public Task <IActionResult> Preview(EntityAttachmentOptions opts)
{
if (opts == null)
{
opts = new EntityAttachmentOptions();
}
// We always need a guid
if (string.IsNullOrEmpty(opts.Guid))
{
throw new ArgumentNullException(nameof(opts.Guid));
}
// Return view
return(Task.FromResult((IActionResult)View(opts)));
}
public async Task <IViewComponentResult> InvokeAsync(EntityAttachmentOptions model)
{
// We always need a model
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
// We always need a guid
if (string.IsNullOrEmpty(model.Guid))
{
throw new ArgumentNullException(nameof(model.Guid));
}
// Get data & return view
return(View(new AttachmentsViewModel()
{
Results = await GetDataAsync(model)
}));
}
private async Task <IPagedResults <Attachment> > GetDataAsync(EntityAttachmentOptions model)
{
return(await _attachmentStore
.QueryAsync()
.Select <AttachmentQueryParams>(async q =>
{
// Get attachments for entity
if (model.EntityId > 0)
{
var relaationships = await _entityAttachmentStore
.GetByEntityIdAsync(model.EntityId);
if (relaationships != null)
{
q.Id.IsIn(relaationships.Select(r => r.AttachmentId).ToArray());
}
}
// Get attachments for guid
q.ContentGuid.Or().Equals(model.Guid);
})
.ToList());
}
