fix: conditionally filter parent locations (#133)

backend/app/api/handlers/v1/query_params.go

@@ -0,0 +1,36 @@
+package v1
+
+import (
+	"net/url"
+	"strconv"
+
+	"github.com/google/uuid"
+)
+
+func queryUUIDList(params url.Values, key string) []uuid.UUID {
+	var ids []uuid.UUID
+	for _, id := range params[key] {
+		uid, err := uuid.Parse(id)
+		if err != nil {
+			continue
+		}
+		ids = append(ids, uid)
+	}
+	return ids
+}
+
+func queryIntOrNegativeOne(s string) int {
+	i, err := strconv.Atoi(s)
+	if err != nil {
+		return -1
+	}
+	return i
+}
+
+func queryBool(s string) bool {
+	b, err := strconv.ParseBool(s)
+	if err != nil {
+		return false
+	}
+	return b
+}