Question JsonUtility.FromJsonOverwrite doesn't seem to do anything?

I have a scriptable object that I would like to overwrite with data from a json file. I have no issue getting the data from the json as a string, and I've confirmed that it's formatted correctly. When I pass it into this method I receive no error messages, but my scriptable object isn't overwritten.

Code (CSharp):

1.     public void JsonInit(string jsonString)
2.     {
3.         JsonUtility.FromJsonOverwrite(jsonString, this);
4.     }

What am I missing here? I've gone digging around in the documentation, and checked multiple code examples, but as far as I can tell, this should work fine?

 

Please post the code for the SO and the json.

Note from the docs:
The types of fields that you want to be overwritten must be supported by the serializer; unsupported fields will be ignored, as will private fields, static fields, and fields with the NonSerialized attribute applied.
If a field of the object is not present in the JSON representation, that field will be left unchanged.

 

Sure thing, they're both quite basic

Here's the SO:

Code (CSharp):

1. public class SO_GUIData: ScriptableObject
2. {
3.     public string FileType { get; set; }
4.     public string LanguageCode { get; set; }
5.     public string LanguageName { get; set; }
6.     public string PauseText { get; set; }
7.     public string ResumeButtonText { get; set; }
8.     public string SettingsButtonText { get; set; }
9.     public string QuitButtonText { get; set; }
10.     public string TwelveHourClockName { get; set; }
11.     public string TwentyFourHourClockName { get; set; }
12.     public string AnteMeridiemShort { get; set; }
13.     public string PostMeridiemShort { get; set; }
14.     public string WeeHours { get; set; }
15.     public string SundayLong { get; set; }
16.     public string SundayShort { get; set; }
17.     public string MondayLong { get; set; }
18.     public string MondayShort { get; set; }
19.     public string TuesdayLong { get; set; }
20.     public string TuesdayShort { get; set; }
21.     public string WednesdayLong { get; set; }
22.     public string WednesdayShort { get; set; }
23.     public string ThursdayLong { get; set; }
24.     public string ThursdayShort { get; set; }
25.     public string FridayLong { get; set; }
26.     public string FridayShort { get; set; }
27.     public string SaturdayLong { get; set; }
28.     public string SaturdayShort { get; set; }
29.     public string SpringLong { get; set; }
30.     public string SpringShort { get; set; }
31.     public string SummerLong { get; set; }
32.     public string SummerShort { get; set; }
33.     public string AutumnLong { get; set; }
34.     public string AutumnShort { get; set; }
35.     public string WinterLong { get; set; }
36.     public string WinterShort { get; set; }
37.     public string SeasonName { get; set; }
38.     public string YearName { get; set; }
39.  
40.     public void JsonInit(string jsonString)
41.     {
42.         JsonUtility.FromJsonOverwrite(jsonString, this);
43.         this.name = LanguageCode + "GUIData";
44.     }
45. }

Here's the json:

Code (CSharp):

1. {
2.     "FileType": "GUI",
3.     "LanguageCode": "eng",
4.     "LanguageName": "English",
5.  
6.     "PauseText": "Paused",
7.     "ResumeButtonText": "Resume",
8.     "SettingsButtonText": "Settings",
9.     "QuitButtonText": "Quit Game",
10.  
11.     "TwelveHourClockName": "12 Hour Clock",
12.     "TwentyFourHourClockName": "24 Hour Clock",
13.     "AnteMeridiemShort": "A.M.",
14.     "PostMeridiemShort": "P.M.",
15.     "WeeHours": "Wee Hours",
16.  
17.     "SundayLong": "Sunday",
18.     "SundayShort": "Sun",
19.     "MondayLong": "Monday",
20.     "MondayShort": "Mon",
21.     "TuesdayLong": "Tuesday",
22.     "TuesdayShort": "Tues",
23.     "WednesdayLong": "Wednesday",
24.     "WednesdayShort": "Wed",
25.     "ThursdayLong": "Thursday",
26.     "ThursdayShort": "Thurs",
27.     "FridayLong": "Friday",
28.     "FridayShort": "Fri",
29.     "SaturdayLong": "Saturday",
30.     "SaturdayShort": "Sat",
31.  
32.     "SpringLong": "Spring",
33.     "SpringShort": "Spr",
34.     "SummerLong": "Summer",
35.     "SummerShort": "Sum",
36.     "AutumnLong": "Autumn",
37.     "AutumnShort": "Aut",
38.     "WinterLong": "Winter",
39.     "WinterShort": "Win",
40.  
41.     "SeasonName": "Season",
42.     "YearName": "Year"
43. }

 

Unity serialization doesn't deal in properties. The properties have to be fields or have to have backing fields marked with [SerializeField].

 

That was it, thank you!

 

Problems with Unity "tiny lite" built-in JSON:

In general I highly suggest staying away from Unity's JSON "tiny lite" package. It's really not very capable at all and will silently fail on very common data structures, such as bare arrays, tuples, Dictionaries and Hashes and ALL properties.

Instead grab Newtonsoft JSON .NET off the asset store for free, or else install it from the Unity Package Manager (Window -> Package Manager).

https://assetstore.unity.com/packages/tools/input-management/json-net-for-unity-11347

Also, always be sure to leverage sites like:

https://jsonlint.com
https://json2csharp.com
https://csharp2json.io