From 2b0f40b4433ce03bbec9336b3bf9e7cb05657f8f Mon Sep 17 00:00:00 2001
From: LukaOber <lukaobermayr@gmail.com>
Date: Thu, 10 Oct 2024 18:46:44 +0200
Subject: [PATCH] serialize Vec<T> with one element as T for axis

---
 charming/src/lib.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/charming/src/lib.rs b/charming/src/lib.rs
index 4c518ab..572dfe3 100644
--- a/charming/src/lib.rs
+++ b/charming/src/lib.rs
@@ -100,8 +100,8 @@ use component::{
 use datatype::Dataset;
 use element::{process_raw_strings, AxisPointer, Color, MarkLine, Tooltip};
 use serde::Serialize;
+use serde_with::{formats::PreferOne, serde_as, skip_serializing_none, OneOrMany};
 use series::Series;
-
 /**
 The chart representation.
 
@@ -236,6 +236,7 @@ mouse pointer.
 [`Toolbox`] is a feature toolbox that includes data view, save as image, data
 zoom, restore, and reset.
  */
+#[serde_as]
 #[derive(Serialize, Debug, PartialEq, Clone)]
 #[serde(rename_all = "camelCase")]
 pub struct Chart {
@@ -258,6 +259,7 @@ pub struct Chart {
     #[serde(rename = "grid3D")]
     grid3d: Vec<Grid3D>,
 
+    #[serde_as(as = "OneOrMany<_, PreferOne>")]
     #[serde(skip_serializing_if = "Vec::is_empty")]
     x_axis: Vec<Axis>,
 
@@ -265,6 +267,7 @@ pub struct Chart {
     #[serde(rename = "xAxis3D")]
     x_axis3d: Vec<Axis3D>,
 
+    #[serde_as(as = "OneOrMany<_, PreferOne>")]
     #[serde(skip_serializing_if = "Vec::is_empty")]
     y_axis: Vec<Axis>,