Workaround libpq not supporting string arrays

db.go

 
 import (
 	"database/sql"
+	"encoding/json"
 	"errors"
 	_ "github.com/lib/pq"
 	"log"
 
 func (db *DB) FindPlaylistBySection(sectionName string) ([]string, error) {
 	query := `
-	SELECT pl.tracks FROM public.round_playlist pl 
+	SELECT array_to_json(pl.tracks) FROM public.round_playlist pl
 	JOIN public.round r ON pl.round_id = r.id
 	WHERE r.section = $1`
 	row := db.database.QueryRow(query, sectionName)
+	var tracksJson []byte
 	var tracks []string
-	err := row.Scan(&tracks)
+	err := row.Scan(&tracksJson)
+	if err != nil {
+		return nil, err
+	}
+	err = json.Unmarshal(tracksJson, tracks)
 	if err != nil {
 		return nil, err
 	}
 }
 
 func (db *DB) UpdatePlaylistBySection(sectionName string, tracks []string) (bool, error) {
+	tracksJson, err := json.Marshal(tracks)
+	if err != nil {
+		return false, err
+	}
 	query := `
 	INSERT INTO public.round_playlist pl
-	SELECT r.id, $2
+	SELECT r.id, json_to_array($2)
 	FROM public.round r 
 	WHERE r.section = $1
 	ON CONFLICT (pl.round_id) DO UPDATE SET tracks = EXCLUDED.tracks`
-	res, err := db.database.Exec(query, sectionName, tracks)
+	res, err := db.database.Exec(query, sectionName, tracksJson)
 
 	if err != nil {
 		return false, err