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POscala, play framework pattern type is incompatible with expected type
 

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  1. POscala, play framework pattern type is incompatible with expected type
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    <p>I have an issue with play framework and scala. My 2 Model class are below:</p> <p>In here UserProfile have one Foriegn key to User Account and MyFriend hav 2 Foriegn key 1. user_Id from user profile and friend_ID from Userprofile</p> <pre><code>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 =&gt; 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 =&gt; (userprofile, myfriend) } /** * Register a new useraccount. * * @param useraccount. */ def insert(userProfile: UserProfile): Long = { DB.withConnection { implicit connection =&gt; 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 -&gt; userProfile.useraccountid.get, 'name -&gt; userProfile.name, 'date_of_birth -&gt; userProfile.date_of_birth, 'gender -&gt; userProfile.gender, 'image -&gt; userProfile.image, 'status -&gt; userProfile.status).executeUpdate() } } } </code></pre> <p>and</p> <pre><code>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=&gt; Post(id,name,image,time) } } /** * Parse a Post from a UserPost */ val withUserPost = Post.simple ~ (UserPost.simple ?) map{ case post ~ userpost =&gt; (post, userpost) } /** * Register a new post. * * @param post */ def insert(post: Post): Long = { DB.withConnection { implicit connection =&gt; SQL( """ insert into POST(NAME,IMAGE,TIME) values ( {name}, {image}, {time} ) """).on( 'name -&gt; post.name, 'image -&gt; post.image, 'time -&gt; post.time).executeUpdate() } } /** * Authonticate */ def authenticate(post: Post) = { DB.withConnection { implicit connection =&gt; val postFound = SQL( """ select * from POST where ID = (id} """).on( 'Id -&gt; post.id ).as(Post.simple.singleOpt) postFound } } }/** * Find Post With UserPost */ def userPost(post_id: Long) = { DB.withConnection { implicit connection =&gt; val userPost = SQL( """ select * from USER_POST where USER_POST_ID = {user_post_id} """).on( 'post_id -&gt; post_id).as(UserPost.simple.singleOpt) userPost } } </code></pre> <p>and here is my controller application:</p> <pre><code> /* Authenticate User For CreatePost*/ def authendticatePost = Action { implicit request =&gt; val alert: Alert = new Alert("", "") Common.setAlert(alert) createPostForm.bindFromRequest.fold( errors =&gt; BadRequest(views.html.createPost(errors, "There is some error")), post =&gt; { val postOpt = Post.authenticate(post) postOpt match { case None =&gt; 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) =&gt; val userSession = request.session + ("Id" -&gt; authpost.id.toString) val createPostOpt = Post.userPost(authpost.id.get) createPostOpt match { case None =&gt; Ok(views.html.createPost(Application.createPostForm, "")).withSession(userSession) case Some(postFound: Post) =&gt; val createPostFormWithDetails = Application.createPostForm.fill(postFound) Ok(views.html.createPost(createPostFormWithDetails, "")).withSession(userSession) } } }) } /** Create Post*/ def createPost = Action { implicit request =&gt; val alert: Alert = new Alert("", "") Common.setAlert(alert) createPostForm.bindFromRequest.fold( errors =&gt; BadRequest(views.html.createPost(errors, "There is some error")), post =&gt; { Post.findByPostName(post.name).isEmpty match { case true =&gt; val createpost = Post(NotAssigned, post.name, post.image, post.time) Post.insert(createpost) Common.setAlert(alert) case false =&gt; 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 =&gt; Ok(views.html.createPost(Application.createPostForm, "post")) } </code></pre> <p>and here is my routes:</p> <pre><code>POST /createPost controllers.Application.createPost GET /post controllers.Application.post </code></pre> <p>and I've got this error at compile time:</p> <pre><code> 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 =&gt; ^ </code></pre>
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    1. COOn which line does the error happen? I don't see the methods `Post.userPost` or `Post.authenticate` in your snippets, but are you sure that they don't return `Unit` by mistake?
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    2. CO/** * 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 } }
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    3. COthis one looks fine, but can you edit your question to add the two missing methods? It would be more readable.
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      1. USgourlaysama
 

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