40564: Added support for 'disabled' state for individual select options

[rybkinevg]

Description (*)

Added support for the disabled property on individual <option> elements within select form fields.

If the disabled key is set to true in the option array it renders the disabled="disabled" attribute accordingly.

Fixed Issues (if relevant)

1. Fixes [Feature] Support "disabled" state for individual select options in the admin config #40564

Manual testing scenarios (*)

№1 Modify the builtin source model:

Open the file: app/code/Magento/Config/Model/Config/Source/Yesno.php and modify the toOptionArray() method to add disabled property to the "No" option:

public function toOptionArray()
{
    return [['value' => 1, 'label' => __('Yes')], ['value' => 0, 'label' => __('No'), 'disabled' => true]];
}

№2 Clear Cache

№3 Navigate to admin configuration area

Go to Stores -> Configuration -> General -> Web, expand the Url Options section

№4 Verify the "Add Store Code to Urls" Field

Click on the dropdown to expand the options, the "No" option is disabled

Questions or comments

Current implementation treats all truthy values of the disabled property as the disabled state:

if ($option['disabled'] ?? false) {
    $html .= ' disabled="disabled"';
}

I am not sure, is this correct, or should we treat only explicitly true values as disabled state? For example:

if (isset($option['disabled']) && $option['disabled'] === true) {
    $html .= ' disabled="disabled"';
}

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

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[rybkinevg]

@magento run all tests

[rybkinevg]

@magento run Static Tests

[rybkinevg]

@magento run all tests

[Copilot]

Pull request overview

Adds framework-level support for disabling individual <option> entries in Magento\Framework\Data\Form\Element\Select, enabling source models to mark specific options as non-selectable (e.g., via ['disabled' => true]).

Changes:

• Render disabled="disabled" on <option> when the option array contains a truthy disabled flag.
• Add unit coverage validating disabled option rendering for both plain options and options within an <optgroup>.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
lib/internal/Magento/Framework/Data/Form/Element/Select.php	Adds disabled="disabled" attribute rendering for per-option disabled state.
lib/internal/Magento/Framework/Data/Test/Unit/Form/Element/SelectTest.php	New unit tests covering disabled option rendering (including optgroups) across various disabled values.

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[ihor-sviziev]

@magento run all tests

[ihor-sviziev]

Functional test failures look as a false positives, so approving

[rybkinevg]

@ihor-sviziev, since PR is approved, what are the next steps? is there anything else required of me?