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POHow to convert Squeryl query object to JSON - Play Framework
 

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  1. POHow to convert Squeryl query object to JSON - Play Framework
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    <h1>Case</h1> <p>This case are using Scala, Play Framework, Jerkson and Squeryl. I'm trying to convert the query resultset to JSON but the result presents just the 'persisted' field.</p> <h2>Question</h2> <p>Why the Json.generate() is not printing all entity fields? </p> <h3>Controller</h3> <pre><code>package controllers.api import play.api.mvc._ import play.Logger import play.api.data.Form import play.api.data.Forms.{mapping, text, optional} import com.codahale.jerkson.Json import org.squeryl.PrimitiveTypeMode._ import models.{ApplicationDatabase, Category} object Categories extends Controller { def findAll = Action { val json = inTransaction { val list = from(ApplicationDatabase.categories)(categories =&gt; select(categories) orderBy(categories.title) ) Logger.info(list.toString) Json.generate(list) } Ok(json).as(JSON) } def findById(id: Long) = Action { val category = inTransaction { ApplicationDatabase.categories.lookup(id) } Ok(Json.generate(category)).as(JSON) } } </code></pre> <h3>Category Entity</h3> <pre><code>package models import org.squeryl.PrimitiveTypeMode._ import org.squeryl.annotations.Column class Category(var uid: String, var title: String) extends FlashcardsDbObject { } </code></pre> <h3>Base Entity</h3> <pre><code>package models; import java.sql.Timestamp import org.squeryl._ import org.squeryl.annotations.{Column} import org.squeryl.PrimitiveTypeMode._ class FlashcardsDbObject extends KeyedEntity[Long] { val id: Long = 0 @Column("created_at") var createdAt = new Timestamp(System.currentTimeMillis) @Column("updated_at") var updatedAt = new Timestamp(System.currentTimeMillis) } </code></pre> <h1>Problem</h1> <h2>Result</h2> <pre><code>{ persisted: true }, { persisted: true }, </code></pre> <h2>Expected</h2> <pre><code>{ id: 1, uid: 'chemistry', title: 'Chemistry' persisted: true }, { id: 2, uid: 'biology', title: 'Biology' persisted: true }, </code></pre>
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    1. USSamuel
    1. USdanielnegri
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    1. COOh, I got this example from James Ward, Ryan Knight article: [Artima article](http://www.artima.com/articles/play2_scala_squeryl.html) [GitHub code](https://github.com/jamesward/play2bars/blob/scala-squeryl/app/controllers/Application.scala)
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      1. POHow to convert Squeryl query object to JSON - Play Framework
      1. USdanielnegri
 

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