protected override async Task OnSortAsync(IPage sourceItem, IPage destItem, ListItemSortPosition position)
{
switch (position)
{
case ListItemSortPosition.Before:
await pageService.UpPagePositionAsync(sourceItem, destItem);
break;
case ListItemSortPosition.After:
await pageService.DownPagePositionAsync(sourceItem, destItem);
break;
}
}
public async Task <IActionResult> SortAsync([FromQuery] string sourceId, [FromQuery] string destId, [FromQuery] ListItemSortPosition destPosition)
{
await OnInitializeAsync();
if (!ModelState.IsValid)
{
return(ValidationProblem());
}
var sId = ParseId(sourceId);
var dId = ParseId(destId);
var sourceItem = await OnGetItemAsync(sId);
if (sourceItem == null)
{
return(BadRequest());
}
var destItem = await OnGetItemAsync(dId);
if (destItem == null)
{
return(BadRequest());
}
await OnSortAsync(sourceItem, destItem, destPosition);
return(Ok());
}
protected virtual Task OnSortAsync(TItem sourceItem, TItem destItem, ListItemSortPosition position)
{
return(Task.CompletedTask);
}