I'm currently trying to create a table using slick and I'm baffled as to what import I'm missing as the examples I've seen don't seem to have a relevant looking import in them.
Currently the column, question mark and the O's are all unresolved.
Could someone let me know what I'm doing wrong please?
Here is my table class:
package com.grimey.tabledefinitions
import slick.driver.MySQLDriver.api._
import com.grimey.staticpage.StaticPage
import slick.lifted.Tag
import slick.model.Table
class StaticPageDef(tag: Tag) extends Table[StaticPage](tag, "static_page") {
def id = column[Long]("id", O.PrimaryKey, O.AutoInc)
def pageType = column[String]("page_type")
def contentHtml = column[String]("content_html")
def * = (id.?, pageType, contentHtml) <>(StaticPage, StaticPage.unapply _)
}
And here is my build.sbt:
name := """grimey-cms"""
version := "1.0-SNAPSHOT"
lazy val root = (project in file(".")).enablePlugins(PlayScala)
scalaVersion := "2.11.8"
libraryDependencies ++= Seq(
"mysql" % "mysql-connector-java" % "5.1.38",
"com.typesafe.play" %% "play-slick" % "2.0.0",
"com.typesafe.play" %% "play-slick-evolutions" % "2.0.0"
)
resolvers += "scalaz-bintray" at "http://dl.bintray.com/scalaz/releases"
fork in run := true
And finally, here is the case class I'm using for the table:
package com.grimey.staticpage
import java.time.LocalDateTime
case class StaticPage(id: Long, htmlContent: String, pageType: String,
created: LocalDateTime, updated: LocalDateTime)
I bet it's something really silly :)
The O object is from the table and it varies driver to driver. Some drivers may not support certain column options supported by others. Therefore you will need to import the column options that are specific to your database - MySQL in this case:
import slick.driver.MySQLDriver.api._
You may check this full tutorial on how to use Play + Slick + MySQL: http://pedrorijo.com/blog/play-slick/
Or you may just navigate through the code: https://github.com/pedrorijo91/play-slick3-steps
Related
Error:
value <> is not a member of (slick.lifted.Rep[String], slick.lifted.Rep[String], slick.lifted.Rep[String])
def * : ProvenShape[Employee] = (id, name, dept) <> (Employee.tupled, Employee.unapply)
My build.sbt look like this:
name := "AkkaHttpDemo"
version := "0.1"
scalaVersion := "2.13.3"
lazy val root = project in file(".")
libraryDependencies ++= Seq(
"com.typesafe.akka" %% "akka-actor" % "2.6.8" ,
"com.typesafe.akka" %% "akka-stream" % "2.6.8",
"com.typesafe.akka" %% "akka-http" % "10.2.0",
"com.typesafe.slick" %% "slick" % "3.3.2",
"com.typesafe.slick" %% "slick-hikaricp" % "3.3.2",
"org.slf4j" % "slf4j-nop" % "1.6.6" % Test,
"mysql" % "mysql-connector-java" % "8.0.21"
)
Table schema look like this:
package services
import akka.stream.scaladsl._
import slick.jdbc.MySQLProfile._
import slick.ast.ScalaBaseType.stringType
import slick.lifted._
import slick.util._
trait EmployeeStore {
class EmployeeStoreImpl(tag: Tag) extends Table[Employee](tag, _schemaName = Some("MYSCHEMA"),"EMPL") {
def id= column[String]("empid")
def name = column[String]("name")
def dept = column[String]("dept")
def * : ProvenShape[Employee] = (id, name, dept) <> (Employee.tupled, Employee.unapply)
}
val dict = TableQuery[EmployeeStoreImpl]
}
Note*: when I tried given below code also get the error
dict.schema.create
Cannot resolve symbol schema
You need to import the Slick API:
import slick.jdbc.MySQLProfile.api._
You can also replace <> with the more convenient:
def * = (id, name, dept).mapTo[Employee]
You likely don't need the slick.ast, slick.lifted, or slick.util imports, but I appreciate you including the full list of imports in your example.
WHAT I DID:
I am trying to implement oauth2 provider using Play framework. I am using the "scala-oauth2-provider" sample to do this. "https://github.com/nulab/scala-oauth2-provider"
I have listed the version that I used in my application:
Play -- 2.5
database -- Mysql 5.1.22
ISSUE:
AuthCode.scala:19: could not find implicit value for parameter tm:
scala.slick.ast.TypedType[org.joda.time.DateTime] [error] def
createdAt = columnDateTime
Code Snippet:
import java.util.UUID
import org.joda.time.DateTime
import scala.slick.driver.MySQLDriver.simple._
case class AuthCode(authorizationCode: String, userGuid: UUID, redirectUri: Option[String], createdAt: DateTime, scope: Option[String], clientId: Option[String], expiresIn: Int)
class AuthCodes(tag: Tag) extends Table[AuthCode](tag, "auth_codes") {
def authorizationCode = column[String]("authorization_code", O.PrimaryKey)
def userGuid = column[UUID]("user_guid")
def redirectUri = column[Option[String]]("redirect_uri")
def createdAt = column[DateTime]("created_at")
def scope = column[Option[String]]("scope")
def clientId = column[Option[String]]("client_id")
def expiresIn = column[Int]("expires_in")
def * = (authorizationCode, userGuid, redirectUri, createdAt, scope, clientId, expiresIn) <> (AuthCode.tupled, AuthCode.unapply)
}
How do I fix this issue? Can anyone help me to fix this issue?
Note: I have also tried the solution https://stackoverflow.com/a/22578950/1584121. But I am getting same issue :(
I didn't look into the sample project, but I used the solution available through https://github.com/tototoshi/slick-joda-mapper. Hopefully you can apply this to your code. I am using Scala 2.11.8 with Slick 3.1.1, and therefore use slick-joda-mapper 2.2.0. If you are using different versions of Scala and/or Slick, you might have to select a different version of slick-joda-mapper.
First add the required dependencies to your build.sbt:
libraryDependencies ++= Seq(
"com.typesafe.slick" %% "slick" % "3.1.1",
"org.slf4j" % "slf4j-nop" % "1.6.4",
"com.github.tototoshi" %% "slick-joda-mapper" % "2.2.0",
"joda-time" % "joda-time" % "2.7",
"org.joda" % "joda-convert" % "1.7"
)
In your Scala source file, use the following imports:
import slick.driver.MySQLDriver.api._
import scala.concurrent.ExecutionContext.Implicits.global
import com.github.tototoshi.slick.MySQLJodaSupport._
import org.joda.time.DateTime
You can then use a DateTime object simply in Slick queries.
I am upgrading Play Framework server from 2.2.2 to 2.4.4, as my application is working fine with old version, but while upgrading it is giving various errors like:
Cannot write an instance of play.api.libs.json.JsLookupResult to HTTP response. Try to define a Writable[play.api.libs.json.JsLookupResult]
Ok<gts<0>>
^
build.sbt:
name := """TestApp"""
version := "1.0-SNAPSHOT"
lazy val root = (project in file(".")).enablePlugins(PlayJava)
//scalaVersion := "2.11.6"
//scalaVersion := "2.10.2"
libraryDependencies ++= Seq(
javaJdbc,
cache,
javaWs,
jdbc,
cache,
"com.typesafe.play" %% "anorm" % "2.4.0",
"com.google.inject" % "guice" % "4.0",
"javax.inject" % "javax.inject" % "1",
"org.reactivemongo" %% "reactivemongo" % "0.10.0",
"org.reactivemongo" %% "play2-reactivemongo" % "0.10.2",
"org.mockito" % "mockito-core" % "1.9.5" % "test",
"org.webjars" % "requirejs" % "2.1.1",
"org.postgresql" % "postgresql" % "9.4-1200-jdbc41",
"postgresql" % "postgresql" % "9.1-901.jdbc4",
"com.typesafe.play" % "play-iteratees_2.10" % "2.2.3",
"com.typesafe.slick" % "slick_2.10" % "2.1.0",
"com.typesafe.play" % "play-jdbc_2.10" % "2.4.4",
"org.apache.flume" % "flume-ng-core" % "1.5.2",
"org.apache.flume" % "flume-ng-sdk" % "1.5.2",
"org.scala-lang" % "scala-compiler" % "2.11.6"
)
app.scala:
package controllers
import play.modules.reactivemongo.MongoController
import play.modules.reactivemongo.json.collection.JSONCollection
import scala.concurrent.Future
import reactivemongo.api.Cursor
import play.api.libs.concurrent.Execution.Implicits.defaultContext
import javax.inject.Singleton
import play.api.mvc._
import play.api.libs.json._
#Singleton
class Application extends Controller with MongoController {
def collection: JSONCollection = db.collection[JSONCollection]("Test")
import models._
import models.JsonFormats._
import reactivemongo.bson._
def index = Action.async {
val cursor: Cursor[JsValue] = collection.
find(Json.obj()).
cursor[JsValue]
val futureUsersList: Future[List[JsValue]] = cursor.collect[List]()
val futurePersonsJsonArray: Future[JsArray] = futureUsersList.map { dao =>
Json.arr(dao)
}
futurePersonsJsonArray.map {
dao =>
Ok(dao(0))
}
}
}
Please let me know where I am doing wrong whether it is in my controller class or build.sbt ? Thanks in advance.
Indexing a JsArray does not return the JsValue at that index but a JsLookupResult, which is either JsDefined or JsUndefined (if, e.g, the index is out-of-bounds.) I think this changed in Play 2.3.
While you can write a JsValue directly to an HTTP response via the default JSON writeable provided by Play, there is no such writeable for a JsLookupResult. You can fix it by pattern matching on the JsLookupResult to extract the value, and handle its absence:
futurePersonsJsonArray.map { dao =>
dao(0).match {
case JsDefined(js) => Ok(js)
case _ => NotFound
}
}
or use toOption to get an Option[JsValue]:
futurePersonsJsonArray.map { dao =>
dao(0).toOption.map(js => Ok(js)).getOrElse(NotFound)
}
However, a better way to fix the code would be to use Json.toJson() directly on the redeemed result of futureUserList, rather than putting it in a JSON array, and then immediately taking it out again:
def index = Action.async {
val cursor: Cursor[JsValue] = collection.
find(Json.obj()).
cursor[JsValue]
val futureUsersList: Future[List[JsValue]] = cursor.collect[List]()
futureUsersList.map { list =>
Ok(Json.toJson(list))
}
}
I have a table called "KLIJENTI" in MySQL database on ampps localhost server. Table consists of 4 columns: ID_KLIJENTA - int, IME_KLIJENTA - string, PREZIME_KLIJENTA - string and ADRESA_KLIJENTA - string.
I followed tutorials on how to use slick to insert into and read from database, but it does not do what I want.
Here is my application.conf:
scalaTest = {
url = "jdbc:mysql://localhost/Scala1"
user = "root"
password = "mysql"
driver = com.mysql.jdbc.Driver
connectionPool = disabled
keepAliveConnection = true
logStatements = true
}
build.sbt:
name := """project4"""
mainClass in Compile := Some("HelloSlick")
libraryDependencies ++= List(
"com.typesafe.slick" %% "slick" % "3.1.0-RC2",
"org.slf4j" % "slf4j-nop" % "1.7.10",
"com.h2database" % "h2" % "1.4.187",
"org.scalatest" %% "scalatest" % "2.2.4" % "test" ,
"mysql" % "mysql-connector-java" % "5.1.28"
)
fork in run := true
And here is my helloSlick.scala:
import scala.concurrent.{Future, Await}
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.duration.Duration
import slick.backend.DatabasePublisher
import slick.driver.MySQLDriver.api._
case class Klijent(ID_KLIJENTA: Option[Int] = None, IME_KLIJENTA: String, PREZIME_KLIJENTA: String, ADRESA_KLIJENTA: String)
class Klijenti(tag: Tag) extends Table[Klijent](tag, "KLIJENTI") {
def ID_KLIJENTA = column[Option[Int]]("ID_KLIJENTA", O.PrimaryKey, O.AutoInc)
def IME_KLIJENTA = column[String]("IME_KLIJENTA")
def PREZIME_KLIJENTA = column[String]("PREZIME_KLIJENTA")
def ADRESA_KLIJENTA = column[String]("ADRESA_KLIJENTA")
def * = (ID_KLIJENTA, IME_KLIJENTA, PREZIME_KLIJENTA , ADRESA_KLIJENTA) <>((Klijent.apply _).tupled, Klijent.unapply)
}
// The main application
object HelloSlick extends App {
val db = Database.forConfig("scalaTest")
val mojiKlijenti = TableQuery[Klijenti]
val q1 = sql"select IME_KLIJENTA from KLIJENTI WHERE ID==1 ".as[String]
val q2 = mojiKlijenti.filter(_.ID_KLIJENTA === 0)
println(q1)
println(q2)
Before I run this code, I already inserted one row into the database through phpmyadmin, so both values q1 and q2 should print out real values but instead of that, I get this:
background log: info: Running HelloSlick
background log: info: slick.jdbc.SQLActionBuilder$$anon$1#56300388
background log: info: Rep(Filter #1636634026)
My apache webserver and mysql are turned on, just in case someone asks..
Why am I not getting the real values?
EDIT:> Later on, I tried to execute following command mojiKlijenti += Klijent(Some(5),"Name","Surname","Address") and again, it compiler successfully but when I check my database in phpmyadmin, no record is added..
You are not getting the real values because you need to convert the Query into an Action by calling its result method and execute it.
val action = q2.result
val results = db.run( action)
results.foreach( println )
I need to make a simple HTTP request using spray framework. I found some examples on their web site but they turned out to be complicated and involving Akka which is not necessary for me.
Besides, I need to be able to fill in a request's headers (like X-Application, content-type, etc) and, of course, a requests's post data (in my case, it would be a data in JSON).
So how do I do that?
Here is an example. There is going to be a small amount of akka code but as I mentioned in my comment, it's necessary for spray:
import spray.httpx.RequestBuilding._
import spray.http._
import HttpMethods._
import HttpHeaders._
import MediaTypes._
import spray.json._
import DefaultJsonProtocol._
import spray.httpx.SprayJsonSupport._
import akka.actor.ActorSystem
import spray.io.IOExtension
import akka.actor.Props
import spray.can.client.HttpClient
import spray.client.HttpConduit
import scala.concurrent.Future
import scala.util.Failure
import scala.util.Success
case class MyObj(str:String, i:Int)
object SprayExample {
implicit val myObjFormat = jsonFormat2(MyObj)
def main(args: Array[String]) {
import concurrent.ExecutionContext.Implicits._
val obj = MyObj("hello", 1)
val req = Post("/some/url", obj) ~> addHeader("X-Foo", "bar")
implicit val system = ActorSystem()
val ioBridge = IOExtension(system).ioBridge()
val httpClient = system.actorOf(Props(new HttpClient(ioBridge)))
val conduit = system.actorOf(
props = Props(new HttpConduit(httpClient, "localhost", 8080)),
name = "http-conduit"
)
val pipeline = HttpConduit.sendReceive(conduit)
val response: Future[HttpResponse] = pipeline(req)
response onComplete{
case Failure(ex) => ex.printStackTrace()
case Success(resp) => println("success: " + resp.status)
}
}
}
My build file looks like this:
scalaVersion := "2.10.0"
resolvers ++= Seq(
"Scala Tools Repo Releases" at "http://scala-tools.org/repo-releases",
"Typesafe Repo Releases" at "http://repo.typesafe.com/typesafe/releases/",
"spray" at "http://repo.spray.io/"
)
libraryDependencies ++= Seq(
"io.spray" % "spray-httpx" % "1.1-M7",
"io.spray" % "spray-client" % "1.1-M7",
"com.typesafe.akka" %% "akka-actor" % "2.1.0",
"io.spray" %% "spray-json" % "1.2.5"
)