public ActionResult ChangeOrderedProduct(int id)
{
ChangeOrderViewModel changeOrderViewModel = new ChangeOrderViewModel
{
OrderedProduct = _orderedProductRepository.GetOrderedProductWithId(id)
};
return(View(changeOrderViewModel));
}
public async Task <IActionResult> ChangeOrder([FromBody] ChangeOrderViewModel p)
{
UserStoryEntity story = await _context.UserStories.SingleAsync(m => m.Id == p.ItemID);
if (story == null)
{
return(HttpNotFound());
}
//跨列表
if (p.NewListID != p.OldListID && p.NewListID != "" && p.OldListID != "")
{
story.SortCode = p.NewIndex;
story.ListID = p.NewListID;
//分割位置下面的向上移动
//处理新列表。下移动新列表的分割条目后面的项目
var downItems = _context.UserStories.Where(t => t.SortCode >= p.NewIndex && t.ListID == p.NewListID).OrderBy(t => t.SortCode).ToList();
for (int i = 0; i < downItems.Count; i++)
{
var item = downItems[i];
item.SortCode = i + 1 + p.NewIndex;
}
//处理源列表移出位置上移
var oldListItems = _context.UserStories.Where(t => t.SortCode > p.OldIndex && t.ListID == p.OldListID).OrderBy(t => t.SortCode).ToList();
for (int i = 0; i < oldListItems.Count; i++)
{
var item = oldListItems[i];
item.SortCode = p.OldIndex + i;
}
}
else
{
//同列表
if (p.NewIndex > p.OldIndex)
{
//向下移动
//找到在旧列表中 分割的位置上边的内容
var upItems = _context.UserStories.Where(t => t.SortCode <= p.NewIndex && t.SortCode > p.OldIndex && t.ListID == p.OldListID && t.SortCode != p.OldIndex).OrderBy(t => t.SortCode).ToList();
story.SortCode = p.NewIndex;
for (int i = 0; i < upItems.Count; i++)
{
var item = upItems[i];
item.SortCode = i + p.OldIndex;
}
}
else
{
//向上移动
//找到在旧列表中 分割的位置下边的内容
var downItems = _context.UserStories.Where(t => t.SortCode >= p.NewIndex && t.SortCode < p.OldIndex && t.ListID == p.OldListID && t.SortCode != p.OldIndex).OrderBy(t => t.SortCode).ToList();
story.SortCode = p.NewIndex;
for (int i = 0; i < downItems.Count; i++)
{
var item = downItems[i];
item.SortCode = i + 1 + p.NewIndex;
}
}
}
_context.SaveChanges();
return(RedirectToAction("Index"));
}
