path parameter: Invalid path Scala Play Config file - scala

Question

I am getting a parsing exception inside of my application.conf file.
Here is my application.conf
db.test.driver = org.postgresql.Driver
db.test.user = "postgres"
db.test.password = "postgres"
db.test.url = "jdbc:postgresql://localhost:5432/gasguru"
here is the code that I am trying to use to read from my application.conf
trait DbConfigWeb extends DbConfig { qualifier: DbQualifier =>
def url: String = current.configuration.getString(qualifier + ".url").get
println(url)
def username: String = current.configuration.getString(qualifier + ".user").get
def password: String = current.configuration.getString(qualifier + ".password").get
def driver: String = current.configuration.getString(qualifier + ".driver").get
override def database: DatabaseDef = JdbcBackend.Database.forURL(url, username, password, null, driver)
override implicit val session = database createSession
}
trait DbQualifier {
val qualifier: String
}
trait DbProductionQualifier extends DbQualifier {
override val qualifier = "db.production"
}
trait DbTestQualifier extends DbQualifier {
override val qualifier = "db.test"
}
here is the test case I am trying to run:
class DbConfigWebUnitTest extends PlaySpec with OneAppPerSuite with BeforeAndAfterAll {
"DbConfigWebTest" must {
"have the same username as what is defined in application.conf" in {
val dbManagementWeb = new DbConfigWeb with DbTestQualifier
dbManagementWeb.username must be("postgres")
}
"have the same password as what is defined in application.conf" in {
val dbManagementWeb = new DbConfigWeb with DbTestQualifier
dbManagementWeb.username must be("postgres")
}
"have the qualifier db.test" in {
val dbManagementWeb = new DbConfigWeb with DbTestQualifier
dbManagementWeb.qualifier must be ("db.test")
}
}
}
and finally the error message:
[info] - must have the qualifier db.test *** FAILED ***
[info] com.typesafe.config.ConfigException$BadPath: path parameter: Invalid path 'com.suredbits.web.db.DbConfigWebUnitTest$$anonfun$1$$anonfun$apply$mcV$sp$3$$anon$3#1e2cbe08.url': Token not allowed in path expression: '$' ('$' not followed by {, '$' not allowed after '$') (you can double-quote this token if you really want it here)
[info] at com.typesafe.config.impl.Parser.parsePathExpression(Parser.java:1095)
[info] at com.typesafe.config.impl.Parser.parsePath(Parser.java:1135)
[info] at com.typesafe.config.impl.Path.newPath(Path.java:224)
[info] at com.typesafe.config.impl.SimpleConfig.hasPath(SimpleConfig.java:80)
[info] at play.api.Configuration.reportError(Configuration.scala:743)
[info] at play.api.Configuration.readValue(Configuration.scala:132)
[info] at play.api.Configuration.getString(Configuration.scala:151)
[info] at com.suredbits.web.db.DbConfigWeb$class.url(DbConfigWebProduction.scala:14)
[info] at com.suredbits.web.db.DbConfigWebUnitTest$$anonfun$1$$anonfun$apply$mcV$sp$3$$anon$3.url(DbConfigWebUnitTest.scala:27)
[info] at com.suredbits.web.db.DbConfigWeb$class.$init$(DbConfigWebProduction.scala:15)
[info] ...

Answer 1

You are concatenating a object with a string, which will call the default toString method that produces your.class.name#hash. You need to call the method from the trait instead:
current.configuration.getString(qualifier.qualifier + ".url").get
and do the same on the other calls.
Or you can just override the toString method to return the qualifier value and use it the same way you are using it now
trait DbQualifier {
val qualifier: String
override def toString = qualifier
}