JSON Schema default value support

[chakraborty-slx]

Does data Schema default value, is used during render?

Schema extract:

"isVisible": {
  "type": "boolean",
  "default":true
}

UI schema:

{
  "type": "Control",
  "label": "Is Visible",
  "scope": {
    "$ref": "#/properties/isVisible"
  }
}

[edgarmueller]

No, currently not, but supporting this would make sense. I suppose, that the default value would only be used in case the respective data property is unset, correct? E.g., in this example, when binding an empty object { }, default's value would be used, but when binding against { isVisible: false } the default value would be ignored.

[chakraborty-slx]

Yes that would be useful.

[koegel]

This means opening a form on a JSON object will change the object without user interaction e.g. entering values into the form. I think this is not desirable. I would therefore propose a framework user should pre-initialize their JSON with default values before passing it into JSON Forms.

[eneufeld]

@edgarmueller isn't this fixed via #1193 ?

[edgarmueller]

It's not fixed, but we can close it as a duplicate of #1193