/// <summary>
/// 新建数据实体
/// </summary>
/// <param name="entity">要新建的数据实体</param>
/// <returns>返回新建的数据实体</returns>
public WebApiResult<Basic_Announcement> Add(Basic_Announcement entity)
{
var result = new WebApiResult<Basic_Announcement>();
#region 验证
if (Validate(result, entity))
{
if (DataContext.Basic_Announcement.Any(x => x.Deleted == false && x.Topic == entity.Topic))
{
result.AddError(string.Format("标题 '{0}' 已经存在。", entity.Topic));
}
}
#endregion
#region 保存
if (result.Success)
{
DataContext.Basic_Announcement.Add(entity);
DataContext.SaveChanges();
result.Data = entity;
}
#endregion
return result;
}
/// <summary>
/// 验证数据实体
/// </summary>
/// <param name="result">result 参数</param>
/// <param name="entity">要验证的数据实体</param>
/// <returns>成功返回 true；否则返回 false。</returns>
protected bool Validate(WebApiResult<Basic_Announcement> result, Basic_Announcement entity)
{
if (string.IsNullOrWhiteSpace(entity.Topic))
{
result.AddError("请输入参数通知公告标题。");
}
if (string.IsNullOrWhiteSpace(entity.Text.ToString()))
{
result.AddError("请输入参数通知公告内容。");
}
return result.Success;
}
/// <summary>
/// 更新数据实体
/// </summary>
/// <param name="entity">要更新的数据实体</param>
/// <returns>返回更新后的数据实体</returns>
public virtual WebApiResult<Basic_Announcement> Update(Basic_Announcement entity)
{
var result = new WebApiResult<Basic_Announcement>();
#region 验证
if (Validate(result, entity))
{
if (DataContext.Basic_Announcement.Any(x => x.Deleted == false && x.Id != entity.Id && x.Topic == entity.Topic))
{
result.AddError(string.Format("标题 '{0}' 已经存在。", entity.Topic));
}
}
#endregion
#region 保存
if (result.Success)
{
var origin = DataContext.Basic_Announcement.FirstOrDefault(x => x.Id == entity.Id);
if (origin != null)
{
origin.Topic = entity.Topic;
origin.TypeId = entity.TypeId;
origin.StartDate = entity.StartDate;
origin.EndDate = entity.EndDate;
origin.Text = entity.Text;
origin.AttachmentResourceItemId = entity.AttachmentResourceItemId;
DataContext.SaveChanges();
result.Data = origin;
}
}
#endregion
return result;
}