initialValues in TabbedForm within <Edit> not called

What you were expecting: My use case is one where I need to do some data transformation upon calling the provider GET APIs before they get rendered in my <Create> / <Edit> views. From https://marmelab.com/react-admin/CreateEdit.html#default-values my understanding is that the initialValues attribute can be used under <TabbedForm> under both <Create> and <Edit>. Under my <Create> it correctly fires and my expectation is that under <Edit> it should also fire.

What happened instead: When placed as an attribute in <TabbedForm> under <Edit> it does not fire the actual call to my function referenced by initialValues.

Steps to reproduce:

Add an initialValues attribute pointing to a function, for a <TabbedForm> under <Edit> and notice that entering into the Edit view that the function is not called.

Related code:

const postDefaultValue = () => ({ created_at: new Date(), weight: 915 });

export const HbEventEdit = props => (
    <Edit {...props} transform={updateUrl}>
        <TabbedForm initialValues={postDefaultValue}>
        ...
        </TabbedForm>
    </Edit>
);

Other information:

Environment

• React-admin version: 3.10.3
• Last version that did not exhibit the issue (if applicable): N/A
• React version: 16.13.1
• Browser: Chrome Version 87.0.4280.88 (Official Build) (64-bit)
• Stack trace (in case of a JS error):

[etienne-bondot]

OK so we can use the initialValue but if the record’s source exists it will override it. Is that right ? Thank you for these information 👍

[etienne-bondot]

I personally can’t made a complexe switch base on the resource within my customDataProvider. I will keep the mapping within the form top level.