Changeset 0.17.1 (#76)

server/handlers/pg_helpers.go

@@ -0,0 +1,37 @@
+package handlers
+
+import (
+	"database/sql"
+	"encoding/json"
+
+	"github.com/lib/pq"
+)
+
+// pgScanStringArray returns a sql.Scanner that scans a Postgres text[] array
+// into a Go string slice. Used by handler-level Postgres-specific queries.
+func pgScanStringArray(dest *[]string) interface{ Scan(src interface{}) error } {
+	return &pgStringArrayScanner{dest: dest}
+}
+
+type pgStringArrayScanner struct {
+	dest *[]string
+}
+
+func (s *pgStringArrayScanner) Scan(src interface{}) error {
+	var arr pq.StringArray
+	if err := arr.Scan(src); err != nil {
+		// Fallback: try JSON array (for SQLite compatibility if accidentally called)
+		if b, ok := src.([]byte); ok {
+			return json.Unmarshal(b, s.dest)
+		}
+		if str, ok := src.(string); ok {
+			return json.Unmarshal([]byte(str), s.dest)
+		}
+		return err
+	}
+	*s.dest = []string(arr)
+	return nil
+}
+
+// Ensure pq is importable even if not directly referenced elsewhere.
+var _ sql.Scanner = &pgStringArrayScanner{}