Filter Optional JSONB columns mapped to CustomType

I have an optional(nullable) JSONB column which is mapped to Scala Case class.

def myColumn: Rep[MyClass] = column[MyClass]("my_column")

Implicit mapping looks like:

case class MyClass(name: String, number: Int, boolean: Boolean)

def implicitJsonMapper[T: ClassTag](implicit format: OFormat[T]): JdbcType[T] with BaseTypedType[T] =
    MappedJdbcType.base[T, JsValue](Json.toJson(_), _.as[T])

implicit val myClassMapper = implicitJsonMapper[MyClass]

How can I filter based on json keys inside “myColumn” column?

Obviously this didn’t work: TableQuery[MyTable].filter(_.myColumn +> "boolean" === true)

[tminglei]

@lakshmankollipara here’s the codes of PlayJsonImplicits,

  trait PlayJsonImplicits extends PlayJsonCodeGenSupport {
    import utils.JsonUtils.clean
    implicit val playJsonTypeMapper: JdbcType[JsValue] =
      new GenericJdbcType[JsValue](
        pgjson,
        (v) => Json.parse(v),
        (v) => clean(Json.stringify(v)),
        hasLiteralForm = false
      )

    implicit def playJsonColumnExtensionMethods(c: Rep[JsValue]) = {
        new JsonColumnExtensionMethods[JsValue, JsValue](c)
      }
    implicit def playJsonOptionColumnExtensionMethods(c: Rep[Option[JsValue]]) = {
        new JsonColumnExtensionMethods[JsValue, Option[JsValue]](c)
      }
  }

Here, the points are implicit def playJsonColumnExtensionMethods(c: Rep[JsValue]) and implicit def playJsonOptionColumnExtensionMethods(c: Rep[Option[JsValue]]).

So to support TableQuery[MyTable].filter(_.myColumn +> "boolean" === true), you need add definitions like these,

    implicit def myClass JsonColumnExtensionMethods(c: Rep[MyClass]) = {
        new JsonColumnExtensionMethods[MyClass, MyClass](c)
      }
    implicit def myClass JsonOptionColumnExtensionMethods(c: Rep[Option[MyClass]]) = {
        new JsonColumnExtensionMethods[MyClass, Option[MyClass]](c)
      }

I didn’t test it. But you can give it a try.

[tminglei]

@1gorsh ok! <g-emoji alias="smile" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/1f604.png" class="emoji">😄</g-emoji>