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Exception #0 (ReflectionException): Class "***********************" does not exist. Wrong logic. #38480

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@Genaker

Description

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: #30278

Steps to reproduce

  • Create a custom product attribute programmatically with dropdown type.
  • Don't create a source class for the attribute.
  • Try to open a product in admin panel.
  • ReflectionException is thrown.

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”.

Activity

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    Area: FrameworkComponent: EavIssue: ConfirmedGate 3 Passed. Manual verification of the issue completed. Issue is confirmedPriority: P2A defect with this priority could have functionality issues which are not to expectations.Progress: ready for devReported on 2.4.xIndicates original Magento version for the Issue report.Reproduced on 2.4.xThe issue has been reproduced on latest 2.4-develop branchTriage: Dev.ExperienceIssue related to Developer Experience and needs help with Triage to Confirm or Reject it

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