Add display_if support to mappers (Form, List, Show, Datagrid)

[marshallhampton56]

Subject

Introduce display_if option to FormMapper, ShowMapper, ListMapper, and DatagridMapper to conditionally add fields based on runtime logic.

This allows dynamic control over which fields appear in the form, show view, list, or filter

I am targeting this branch, because this is a new backwards-compatible feature.

Changelog

### Added
- `display_if` option support for `FormMapper`, `ShowMapper`, `ListMapper`, and `DatagridMapper` to conditionally skip adding fields based on a callable
- Tests for `display_if` in `FormMapperTest`, `ShowMapperTest`, `ListMapperTest`, and `DatagridMapperTest`
- Documentation for `display_if` usage 

[VincentLanglet]

Why not doing

if ($foo) {
     $formMapper->add('bar');
}

or

$formMapper->ifTrue($foo)->add('bar')->ifEnd();

[zyberspace]

Hi,
i really like this feature. I have a lot of conditions in my admins with ->ifTrue($this->getSubject()->getSomething()) or plain simple ifs if (...) {...}. I feel like this new option could help improve readability in a lot of smaller cases, e.g. when the if is only for one single field.

Is there a reason you sometimes pass the admin and sometimes the object? I would prefer the first argument to always be the current admin and then the object as second argument, if available.

[VincentLanglet]

Hi, i really like this feature.

Honestly, I don't.

Keep in mind SonataAdmin is almost non maintained anymore. I'm the only one reviewing/releasing and I don't

• use this lib anymore for 2 years
• plan to spend a lot of time maintaining it for free

Regarding this, adding features which are not needed because they can be done another way, gives no benefit, just more code to maintain.

I have a lot of conditions in my admins with ->ifTrue($this->getSubject()->getSomething()) or plain simple ifs if (...) {...}. I feel like this new option could help improve readability in a lot of smaller cases, e.g. when the if is only for one single field.

->ifTrue($this->getSubject()->getSomething())->add('foo')->ifEnd()

is at least as readable as

->add('foo', [
     'display_if' => static fn($subject) => $this->getSubject()->getSomething())
])

AND avoid the following issue:

Is there a reason you sometimes pass the admin and sometimes the object? I would prefer the first argument to always be the current admin and then the object as second argument, if available.

[haivala]

Keep in mind SonataAdmin is almost non maintained anymore. I'm the only one reviewing/releasing and I don't

* use this lib anymore for 2 years

* plan to spend a lot of time maintaining it for free

Off topic but I'm curious: What do you use then? Any suggestions to where to migrate?

[VincentLanglet]

Off topic but I'm curious: What do you use then? Any suggestions to where to migrate?

• My new job doesn't require an admin bundle, so I don't use anymore.
• For personal use I recently used EasyAdminBundle