/// <summary>
/// 拖拽排序支持
/// </summary>
/// <typeparam name="TEntity">实体</typeparam>
/// <typeparam name="TPrimaryKey">主键类型</typeparam>
/// <param name="repository">仓储</param>
/// <param name="input">输入参数</param>
/// <returns></returns>
protected async Task MoveTo <TEntity, TPrimaryKey>(IRepository <TEntity, TPrimaryKey> repository, MoveToInputDto <TPrimaryKey> input) where TEntity : class, IEntity <TPrimaryKey>, ISortNo
{
var sourceItem = await repository.GetAsync(input.SourceId);
var targetItem = await repository.GetAsync(input.TargetId);
switch (input.MoveToPosition)
{
case MoveToPositions.Up:
{
var list = repository.GetAll().Where(p => p.SortNo <= targetItem.SortNo);
foreach (var item in list)
{
item.SortNo--;
}
}
sourceItem.SortNo = targetItem.SortNo - 1;
break;
case MoveToPositions.Down:
{
var list = repository.GetAll().Where(p => p.SortNo > targetItem.SortNo);
foreach (var item in list)
{
item.SortNo++;
}
}
sourceItem.SortNo = targetItem.SortNo + 1;
break;
default:
break;
}
}
public async Task MoveTo(MoveToInputDto <long> input) => await base.MoveTo(_columnInfoRepository, input);
