/// <summary>
/// 新增或保存诗歌
/// </summary>
/// <param name="poem"></param>
/// <returns>success or fail</returns>
public string SavePoem(Poem poem)
{
try
{
using (PoemDbContext db = new PoemDbContext())
{
if (poem.PoemID == Guid.Parse("00000000-0000-0000-0000-000000000000"))//无id传进来，是新增
{
poem.PoemID = Guid.NewGuid();
db.Poem.Add(poem);
}
else//保存
{
var p = db.Poem.Find(poem.PoemID);
p.Title = poem.Title;
p.Content = poem.Content;
}
int res = db.SaveChanges();
return(res > 0 ? "success" : "fail");
}
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 新增用户
/// </summary>
/// <param name="user">用户实体</param>
/// <returns>用户实体</returns>
public User AddUser(User user)
{
try
{
using (PoemDbContext db = new PoemDbContext())
{
user.UserID = Guid.NewGuid();
db.User.Add(user);
int res = db.SaveChanges();
return(res > 0 ? user : null);
}
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 跟新User
/// </summary>
/// <param name="user"></param>
/// <returns>success or fail</returns>
public string UpdateUser(User user)
{
try
{
int res = 0;
using (PoemDbContext db = new PoemDbContext())
{
User u = db.User.Find(user.UserID);
if (u != null)
{
u.UserName = user.UserName;
u.Password = user.Password;
res = db.SaveChanges();
}
return(res > 0 ? "success" : "fail");
}
}
catch (Exception e)
{
throw e;
}
}
public void SaveChanges()
{
_context.SaveChanges();
}