protected virtual void OnGetForSelectItem(TEntity entity, GeneralTreeNodeDto node)
{
}
public virtual async Task <IList <GeneralTreeNodeDto> > GetTreeForSelectAsync(GeneralTreeGetForSelectInput <long?> input)
{
//权限判断
await CheckGetPermissionAsync();
//得到实体扁平集合
string parentCode = "";
if (input.Id.HasValue && input.Id.Value > 0)
{
var top = await ownRepository.GetAsync(input.Id.Value);
parentCode = top.Code;
}
var query = ownRepository.GetAll()
.Where(c => c.Code.StartsWith(parentCode))
.OrderBy(c => c.Code);
//可以调用虚方法简介给子类一个机会做过滤，暂未实现
var list = await AsyncQueryableExecuter.ToListAsync(query);
//先踢出父节点
//TEntity parent = list.SingleOrDefault(c => c.Id == input.Id);
//if (parent != null)
// list.Remove(parent);
//转换为Dtop
//上面没有直接用投影是为了给子类一个机会来参与遍历过程
var dtoList = new List <GeneralTreeNodeDto>();
foreach (var c in list)
{
var temp = new GeneralTreeNodeDto
{
id = c.Id.ToString(),
parentId = c.ParentId.ToString(),
text = c.DisplayName
};
temp.attributes = new ExpandoObject();
temp.attributes.code = c.Code;//这里可以搞个虚方法，允许子类填充自己的字段
dtoList.Add(temp);
}
dtoList.ForEach(c =>
{
c.children = dtoList.Where(d => d.parentId == c.id).ToList();
var entity = list.Single(d => d.Id.ToString() == c.id);
if (c.children != null && c.children.Count > 0)
{
c.state = "closed";//默认值为 open
}
if (!string.IsNullOrWhiteSpace(entity.ExtensionData))
{
c.attributes.extData = JsonConvert.DeserializeObject <dynamic>(entity.ExtensionData);
}
OnGetForSelectItem(entity, c);
});
var parentDto = input.Id.HasValue ? dtoList.SingleOrDefault(c => c.id == input.Id.ToString()) : null;
if (input.Id.HasValue)
{
dtoList = dtoList.Where(c => c.parentId == input.Id.ToString()).ToList();
}
else
{
dtoList = dtoList.Where(c => string.IsNullOrWhiteSpace(c.parentId)).ToList();
}
if (input.ForType > 0 && input.ForType < 5 && !string.IsNullOrWhiteSpace(input.ParentText))
{
return new List <GeneralTreeNodeDto> {
new GeneralTreeNodeDto {
id = null, text = L(input.ParentText), children = dtoList
}
}
}
;
if ((input.ForType == 1 || input.ForType == 3) && input.Id.HasValue)
{
return new List <GeneralTreeNodeDto> {
parentDto
}
}
;
if (input.ForType == 1 || input.ForType == 2)
{
return new List <GeneralTreeNodeDto> {
new GeneralTreeNodeDto {
id = null, text = L(this.allTextForSearch), children = dtoList
}
}
}
;
if (input.ForType == 3 || input.ForType == 4)
{
return new List <GeneralTreeNodeDto> {
new GeneralTreeNodeDto {
id = null, text = L(this.allTextForForm), children = dtoList
}
}
}
;
return(dtoList);
}
