Ignoring nil values with ΤJsonSerializer

[pyscripter 786]

When I serialize a an object with object fields that are nil  I get null values in the Json result e.g.

 

{
    "capabilities": {
        "positionEncoding": [],
        "textDocumentSync": {
            "openClose": true,
            "change": 2,
            "willSave": false,
            "willSaveWaitUntil": false,
            "save": null
        },
        "notebookDocumentSync": null,
        "completionProvider": null,
}

 

How can I ignore fields that have nil values?

System.JSON.Types defines the following:

  TJsonDefaultValueHandling = (Include, Ignore, Populate, IgnoreAndPopulate);

but it is not used anywhere.

 

I also tried to use a converter, but I could not get it to work.  And in any case converters are used after the property name is written.

 

Any ideas?

Edited May 13 by pyscripter

[pyscripter 786]

Feature requests added:

 

• TJSONSerializer support for Null value and default value handling. - RAD Studio Service - Jira Service Management
• Add an overload to TJSONSerializer, that serializes without using converters - RAD Studio Service - Jira Service Management

[aehimself 404]

Does TJSonSerializer work with TObjectList and TObjectDictionary already? As far as I remember this is why I started to (de)serialize objects manually back around Delphi 10.4 but would love to automate things finally :)

[pyscripter 786]

29 minutes ago, aehimself said:

Does TJSonSerializer work with TObjectList and TObjectDictionary already? As far as I remember this is why I started to (de)serialize objects manually back around Delphi 10.4 but would love to automate things finally 🙂

It includes a number of converters to handle generic collections, but I think you have to add them manually:

 

Edited May 16 by pyscripter