Exception #0 (ReflectionException): Class "***********************" does not exist. Wrong logic.

[Genaker]

Preconditions and environment

Magento 2 Core all versions have a core issue. When the source model of the EAV class from the Database does not exist magento throws

ReflectionException

Exception #0 (ReflectionException): Class "**\Model\Config\Source***\Options" does not exist

/var/www/html/magento/vendor/magento/framework/Code/Reader/ClassReader.php

 public function getConstructor($className)
    {
        $class = new ReflectionClass($className); <-- Exception happens here 

however, it has logic to tell you exactly what attribute Model is missing

/var/www/html/magento/vendor/magento/module-eav/Model/Entity/Attribute/AbstractAttribute.php

public function getSource()
    {
        if (empty($this->_source)) {
            if (!$this->getSourceModel()) {
                $this->_source = $this->_getDefaultSourceModel();
            } else {
                $this->_source = $this->getSourceModel();
            }
        
            if (!$source) {
                throw new LocalizedException(
                    __(
                        'Source model "%1" not found for attribute "%2"',
                        $this->getSourceModel(),
                        $this->getAttributeCode()
                    )
                );
            }

but this logic never happens because it is an Exception(ReflectionException) not a bool value

you need to add this code and check exception

public function getSource() { if (empty($this->_source)) { if (!$this->getSourceModel()) { $this->_source = $this->_getDefaultSourceModel(); } else { $this->_source = $this->getSourceModel(); } try { $source = $this->_universalFactory->create($this->_source); } catch (\ReflectionException $e) { $source = false; } if (!$source) { throw new LocalizedException( __( 'Source model "%1" not found for attribute "%2"', $this->getSourceModel(), $this->getAttributeCode() ) ); }

then an exception will be self-explained:

Exception #0 (Magento\Framework\Exception\LocalizedException): Source model "*****\Model\Config\Source*\Options" not found for attribute "some_attribute"

Please fix it ASAP.

Related issue: https://github.com/magento/magento2/issues/30278

Steps to reproduce

see this ticket:

https://github.com/magento/magento2/issues/30278

Expected result

Normal Exception explanation

Exception #0 (Magento\Framework\Exception\LocalizedException): Source model "*****\Model\Config\Source*\Options" not found for attribute "some_attribute"

Actual result

Exception #0 (ReflectionException): Class "***********************" does not exist.

Additional information

No response

Release note

No response

Triage and priority

• [ ] Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• [ ] Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• [ ] Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

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[engcom-November]

Hello @Genaker,

Thank you for the report and collaboration!

Verified this issue on 2.4-develop. When the source model is missing from a custom product attribute, we are seeing the below reflection exception Class "Vendor\Module\Model\Config\Source\Options" does not exist. But there is already a LocalizedException present for such case, but this logic is not being triggered, as the $source variable is always true in \Magento\Eav\Model\Entity\Attribute\AbstractAttribute::getSource.

Please take a look at the screenshot below: We are getting the below error

Instead, we should have received something like this.

Hence Confirming the issue.

Please find the custom module used to reproduce the issue. AttVendor.zip

Thank you.

[github-jira-sync-bot]

:white_check_mark: Jira issue https://jira.corp.adobe.com/browse/AC-11469 is successfully created for this GitHub issue.

[m2-assistant[bot]]

:white_check_mark: Confirmed by @engcom-November. Thank you for verifying the issue.
Issue Available: @engcom-November, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.