defaultValue callback is never called

What you were expecting: I’m trying to setting a default uuid on a TextInput field as suggested in the documentation.

<TextInput
    disabled
    source='id'
    defaultValue={() => uuidv4()}
/>

but it seems that the callback is never called and the field is empty even on form submit. By doing the following:

<TextInput
    disabled
    source='id'
    defaultValue={uuidv4()}
/>

The defaultValue appears in the TextInput but in an ArrayInput the value would be always the same for each Array element because uuid4() is called only once.

Environment

• React-admin version: ^3.5.0
• React version: ^16.13.1
• Browser: Chrome 81 - Mac

[fzaninotto]

No, cloneElement clones an element with its props.

[gpietro]

I’m having trouble using react-admin locally with npm link so I’ll try here. Could it be the missing

defaultValue: input.props.defaultValue

while cloning element the origin of the problem?

https://github.com/marmelab/react-admin/blob/master/packages/ra-ui-materialui/src/form/SimpleFormIterator.js#L153