我遇到play framework和scala的问题。我的2个Model类如下：
在这里，UserProfile有一个Foriegn密钥用户帐户和MyFriend hav 2 Foriegn密钥1. user_Id来自用户个人资料，friend_ID来自Userprofile
case class UserProfile(id: Pk[Long] = NotAssigned, useraccountid: Option[Long], name:
String, date_of_birth: Date, gender: String, image: String,status:String)
object UserProfile{
val simple = {
get[Pk[Long]]("user_profile.id") ~
get[Option[Long]]("user_profile.user_account_id") ~
get[String]("user_profile.name") ~
get[Date]("user_profile.date_of_birth") ~
get[String]("user_profile.gender") ~
get[String]("user_profile.image") ~
get[String]("user_profile.status") map {
case id ~ user_account_id ~ name ~ date_of_birth ~ gender ~ image ~ status =>
UserProfile(id, user_account_id, name, date_of_birth, gender, image,status )
}
}
/**
* Parse a userProfile from a MyFriend
*/
val withMyFriend =UserProfile.simple ~ (MyFriend.simple ?) map{
case userprofile ~ myfriend => (userprofile, myfriend)
}
/**
* Register a new useraccount.
*
* @param useraccount.
*/
def insert(userProfile: UserProfile): Long = {
DB.withConnection { implicit connection =>
SQL(
"""
insert into USER_PROFILE(USER_ACCOUNT_ID ,NAME,DATE_OF_BIRTH,GENDER,IMAGE,STATUS) values (
{user_account_id}, {name},{date_of_birth},{gender},{image},{status}
)
""").on(
'user_account_id -> userProfile.useraccountid.get,
'name -> userProfile.name,
'date_of_birth -> userProfile.date_of_birth,
'gender -> userProfile.gender,
'image -> userProfile.image,
'status -> userProfile.status).executeUpdate()
}
}
}
和
case class Post(id: Pk[Long]= NotAssigned, name:String, image:String, time:Date)
object Post{
/**
* Parse a Post from a Resultset
*/
val simple ={
get[Pk[Long]]("post.id") ~
get[String]("post.name")~
get[String]("post.image")~
get[Date]("post.time") map {
case id ~ name ~ image ~ time=> Post(id,name,image,time)
}
}
/**
* Parse a Post from a UserPost
*/
val withUserPost = Post.simple ~ (UserPost.simple ?) map{
case post ~ userpost => (post, userpost)
}
/**
* Register a new post.
*
* @param post
*/
def insert(post: Post): Long = {
DB.withConnection { implicit connection =>
SQL(
"""
insert into POST(NAME,IMAGE,TIME) values (
{name}, {image}, {time}
)
""").on(
'name -> post.name,
'image -> post.image,
'time -> post.time).executeUpdate()
}
}
/**
* Authonticate
*/
def authenticate(post: Post) = {
DB.withConnection { implicit connection =>
val postFound = SQL(
"""
select * from POST
where ID = (id}
""").on(
'Id -> post.id
).as(Post.simple.singleOpt)
postFound
}
}
}/** * Find Post With UserPost */ def userPost(post_id: Long) = { DB.withConnection { implicit connection => val userPost = SQL( """ select * from USER_POST where USER_POST_ID = {user_post_id} """).on( 'post_id -> post_id).as(UserPost.simple.singleOpt) userPost } }
这是我的控制器应用程序：
/* Authenticate User For CreatePost*/
def authendticatePost = Action { implicit request =>
val alert: Alert = new Alert("", "")
Common.setAlert(alert)
createPostForm.bindFromRequest.fold(
errors => BadRequest(views.html.createPost(errors, "There is some error")),
post => {
val postOpt = Post.authenticate(post)
postOpt match {
case None =>
val alert: Alert = new Alert("error", "Invalid Credentials")
Common.setAlert(alert)
val invalidCredentialsForm = Application.createPostForm.fill(Post(NotAssigned, post.name,post.image,post.time))
Ok(views.html.createPost(invalidCredentialsForm, "Invalid Credentials"))
case Some(authpost: Post) =>
val userSession = request.session + ("Id" -> authpost.id.toString)
val createPostOpt = Post.userPost(authpost.id.get)
createPostOpt match {
case None => Ok(views.html.createPost(Application.createPostForm, "")).withSession(userSession)
case Some(postFound: Post) =>
val createPostFormWithDetails = Application.createPostForm.fill(postFound)
Ok(views.html.createPost(createPostFormWithDetails, "")).withSession(userSession)
}
}
})
}
/**
Create Post*/
def createPost = Action { implicit request =>
val alert: Alert = new Alert("", "")
Common.setAlert(alert)
createPostForm.bindFromRequest.fold(
errors => BadRequest(views.html.createPost(errors, "There is some error")),
post => {
Post.findByPostName(post.name).isEmpty match {
case true =>
val createpost = Post(NotAssigned, post.name, post.image, post.time)
Post.insert(createpost)
Common.setAlert(alert)
case false =>
val createpost = Post(NotAssigned, post.name, post.image, post.time)
Post.insert(createpost)
Common.setAlert(alert)
}
Results.Redirect("/post")
})
}
/** Redirect To post**/
def post = Action { implicit request =>
Ok(views.html.createPost(Application.createPostForm, "post"))
}
这是我的路线：
POST /createPost controllers.Application.createPost
GET /post controllers.Application.post
我在编译时遇到了这个错误：
pattern type is incompatible with expected type; found : object None required: Unit
: pattern type is incompatible with expected type;
found : object None
required: Unit
Error occurred in an application involving default arguments.
case None =>
^