Default 'null' value is not applied to a field with type ["null", "object"]

[IrinaBadiginaEpam]

Prerequisites

• I have read the documentation;
• In the case of a bug report, I understand that providing a SSCCE example is tremendously useful to the maintainers.
• I'm providing a shared playground link demonstrating the issue.

Description

Default 'null' value is not applied to a field with type ["null", "object"]

Steps to Reproduce

GIVEN: a property of type ["null", "object"] AND default value is null AND ui:emptyValue = null
See shared playground link

Expected behavior

default value is null

Actual behavior

default value is an empty object {}
both default and ui:emptyValue values are ignored for an object property.

Version

Version of the playground. I guess, current latest stable

Note:
It works fine for ["null", "string"] and ["null", "number"] types.

[epicfaace]

Not sure what's causing this ... the nullable feature was added in #1213. @wms could you maybe take a look?

[wms]

Sure - I have some time tomorrow to take a look at this.

…

On Thu, Feb 13, 2020 at 5:28 PM Ashwin Ramaswami ***@***.***> wrote: Not sure what's causing this ... the nullable feature was added in #1213 <#1213>. @wms <https://github.com/wms> could you maybe take a look? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1581?email_source=notifications&email_token=AAFCBJBROGD2EFVUCKCWB4LRCV7M3A5CNFSM4KQ3HF7KYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOELV4BBA#issuecomment-585875588>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAFCBJGEJD3U5EID77636K3RCV7M3ANCNFSM4KQ3HF7A> .

[porfyriosv]

Any updates on this ?

[robopro]

Another year, another person asking if there are any updates.

Any progress being done on this issue?

[epicfaace]

Another year, another person asking if there are any updates.

Another year, no one actually willing to contribute a PR to fix it. Is anyone willing to take the time to do so? 😉

[razhnoff]

Can u fix this? Add posibility to set null for object fields

[aodinok]

Looks like problem is in computeDefaults:

react-jsonschema-form/packages/utils/src/schema/getDefaultFormState.ts

Line 183 in 8ebbb42

return Object.keys(schema.properties || {}).reduce(

Caught this today as well.

[v1talii-dev]

I have a different problem, the default value of null does not work on string, number types, while everything is fine on the playground, but not in my project. Has anyone already dealt with this?

[jessica-cheng]

Any updates on this? Also doesn't seem to work for property of type ["array", "null"].

[heath-freenome]

Example with array