Inserting data to a PostgreSQL jsonb column via Scala Anorm (in Play Framework)

Question

The data column of PostgreSQL table my_table is of format jsonb. I would like to insert a Scala JsObject (or JsValue), but don't know how to do it!

The following code does not compile, because the on function expects json to be a String:

  def add(json: JsObject): Option[Long] = {
    DB.withConnection {
      implicit c =>

        val query = """
             insert into my_table(data)
        values({data});"""

        SQL(query).on(
          "data" -> json
        ).executeInsert()
    }
  }

What is the solution?

Answer 1

Use ::jsonb tag at the end of a value. eg.

//my scala variables

val jsonDescription: String = "{\"name\":\"ksulr\"}"
val age = 15

//my insert statement
val sql = "INSERT into person(json_description,age) VALUES(?::jsonb,?)"

//prepared statement
val statement = conn.prepareStatement(sql)

//insert values into the sql statement
statement.setString(1,jsonDescription)
statement.setInt(2,age)

statement.executeUpdate()

This will work. It worked for me. Thats how I inserted into a postgres db column of type jsonb.

Answer 2

Borrowing from @KJay_wer, we can use ::jsonb tag with Scala Anorm (Play Framework) too, and convert your JsObject (or other JsValue) into String:

def add(json: JsObject): Option[Long] = {
    DB.withConnection {
      implicit c =>

        val query = """
             insert into my_table (data)
             values ({data}::jsonb);
             """.stripMargin

        SQL(query).on(
          "data" -> json.toString
        ).executeInsert()
    }
  }