Page History
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| Code Block | ||||||||
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// main.scala.html
@(title: String)(content: Html)
<!DOCTYPE html>
<html>
<head>
<title>@title</title>
<link rel="shortcut icon" type="image/png" href="@routes.Assets.at("images/favicon.png")"/>
</head>
<body>
@content
</body>
</html>
// person.scala.html
@(person: Form[CreatePersonForm])(implicit request: MessagesRequestHeader)
@import helper._
@request.flash.get("success").map { key =>
@request.messages(key)
}
@main("Welcome to Play") {
@form(routes.PersonController.addPerson()) {
@inputText(person("name"))
@inputText(person("age"))
@CSRF.formField
<div class="buttons">
<input type="submit" value="Add Person"/>
</div>
}
} |
Model
ORM 과 SQL쿼리방식의 개발 차이는 여기에있습니다. 쿼리 방식에서는 해당 모델을 SQL문으로 한번더 맵핑처리를하여야하며
쿼리를 사용해야합니다. ORM에서는 엔티티와 모델이 일치함으로 추가적인 쿼리개발이 필요가 없습니다.
| Code Block | ||||||||
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//person.scala
//
package models
import play.api.libs.json._
case class Person(id: Long, name: String, age: Int)
object Person {
implicit val personFormat = Json.format[Person]
}
// personRepository.scala
//
package models
import javax.inject.{ Inject, Singleton }
import play.api.db.slick.DatabaseConfigProvider
import slick.jdbc.JdbcProfile
import scala.concurrent.{ Future, ExecutionContext }
/**
* A repository for people.
*
* @param dbConfigProvider The Play db config provider. Play will inject this for you.
*/
@Singleton
class PersonRepository @Inject() (dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {
// We want the JdbcProfile for this provider
private val dbConfig = dbConfigProvider.get[JdbcProfile]
// These imports are important, the first one brings db into scope, which will let you do the actual db operations.
// The second one brings the Slick DSL into scope, which lets you define the table and other queries.
import dbConfig._
import profile.api._
/**
* Here we define the table. It will have a name of people
*/
private class PeopleTable(tag: Tag) extends Table[Person](tag, "people") {
/** The ID column, which is the primary key, and auto incremented */
def id = column[Long]("id", O.PrimaryKey, O.AutoInc)
/** The name column */
def name = column[String]("name")
/** The age column */
def age = column[Int]("age")
/**
* This is the tables default "projection".
*
* It defines how the columns are converted to and from the Person object.
*
* In this case, we are simply passing the id, name and page parameters to the Person case classes
* apply and unapply methods.
*/
def * = (id, name, age) <> ((Person.apply _).tupled, Person.unapply)
}
/**
* The starting point for all queries on the people table.
*/
private val people = TableQuery[PeopleTable]
/**
* Create a person with the given name and age.
*
* This is an asynchronous operation, it will return a future of the created person, which can be used to obtain the
* id for that person.
*/
def create(name: String, age: Int): Future[Person] = db.run {
// We create a projection of just the name and age columns, since we're not inserting a value for the id column
(people.map(p => (p.name, p.age))
// Now define it to return the id, because we want to know what id was generated for the person
returning people.map(_.id)
// And we define a transformation for the returned value, which combines our original parameters with the
// returned id
into ((nameAge, id) => Person(id, nameAge._1, nameAge._2))
// And finally, insert the person into the database
) += (name, age)
}
/**
* List all the people in the database.
*/
def list(): Future[Seq[Person]] = db.run {
people.result
}
} |
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