我试图使用anorm从mySQL数据库表中获取结果集。这是我的代码。
.nav {
background: #00A2E8;
}
.text-center {
text-align: center;
padding: 10px;
}
.copright {
line-height: 40px;
}
.side-image {
float: right;
margin-left: -40px;
}
我尝试用一些实验改变代码,但没有奏效。
但是我收到了这个错误
从stdout读取: D:\ PROJECTS \ test \ Project_VendorM8 \ app \ models \ Brand.scala:69:type 不匹配;从stdout读取:发现: scala.collection.immutable.Nil.type从stdout读取:必需: scala.collection.mutable.Seq [(String,String)] D:\ PROJECTS \ test \ Project_VendorM8 \ app \ models \ Brand.scala:69:type 不匹配;发现:scala.collection.immutable.Nil.type必需: scala.collection.mutable.Seq [(String,String)]从stdout读取: foldLeftSeq [(String,String)] {(cs,c)=> foldLeftSeq [(String,String)] {(cs,c)=>从stdout读取:^
答案 0 :(得分:1)
正如评论中所提到的,一个更简单的解决方案不仅仅是使用map并写:
def options: Seq[(String,String)] = DB.withConnection { implicit connection =>
SQL("select * from m_brand order by brandName").as(simple *)
.map( b => (b.id.toString, b.name))
.toSeq
}
答案 1 :(得分:0)
更改
foldLeft[Seq[(String, String)]](Nil)
到
foldLeft(Seq.empty[(String, String)])