public async Task TagUpdated(TagUpdated @event)
{
var repos = this._unitOfWork.GetRepositoryAsync <TagsEntity>();
//删除原有的。
await repos.DelAsync(t => t.CourseId == @event.CourseId);
//
await this.InsertTags(
@event.Val, @event.CourseId, @event.SchoolId, @event.RegtionId, @event.CreatorId, @event.SchoolName, @event.RegionName);
this._unitOfWork.SaveChanges();
}
public async Task <IActionResult> UpdateByIdAsync(int id, [FromBody] TagArgs args)
{
ValidateTagArgs(args);
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (!_entityIndex.Exists(ResourceType.Tag, id))
{
return(NotFound());
}
if (!UserPermissions.IsAllowedToEdit(User.Identity, args.Status, _entityIndex.Owner(ResourceType.Tag, id)))
{
return(Forbid());
}
var oldStatus = _entityIndex.Status(ResourceType.Tag, id).GetValueOrDefault();
if (args.Status == ContentStatus.Unpublished && oldStatus != ContentStatus.Published)
{
return(BadRequest(ErrorMessages.CannotBeUnpublished(ResourceType.Tag)));
}
var tagIdWithSameTitle = _tagIndex.GetIdByTagTitle(args.Title);
if (tagIdWithSameTitle != null && tagIdWithSameTitle != id)
{
return(StatusCode(409, ErrorMessages.TagNameAlreadyUsed));
}
var ev = new TagUpdated
{
Id = id,
UserId = User.Identity.GetUserIdentity(),
Properties = args,
Timestamp = DateTimeOffset.Now,
};
await _eventStore.AppendEventAsync(ev);
return(NoContent());
}
private async Task SaveTag()
{
if (string.IsNullOrWhiteSpace(Tag.Name))
{
await pageService.DisplayAlert("Error", "Tag Name Cannot be Blank", "OK");
return;
}
if (Tag.TagId == 0) // New Tag
{
await tagStore.AddTag(Tag);
TagAdded?.Invoke(this, Tag);
}
else // Exisiting Tag
{
await tagStore.UpdateTag(Tag);
TagUpdated?.Invoke(this, Tag);
}
await pageService.PopAsync();
}
private void NewTag_Changed(object sender, EventArgs e)
{
TagUpdated?.Invoke(null);
}