Category Archives: Magento

Content Staging

Content staging gives your business team the ability to easily create, preview, and schedule a wide range of content updates for your store directly from the Admin. For example, rather than thinking in terms of a static page, consider a page to be a collection of different elements that can be turned on or off based on a schedule. You can use content staging to create a page that changes automatically throughout the year on schedule.

Content staging is a feature that allows creating, previewing, and scheduling content updates for your store
directly from the Admin . You can use content staging to create campaigns that include changes to products,
categories, pages, blocks, widgets, price rules, and more.

magento 2 enterprise admin showing blank page

This is Magento bug. Wrong paths to Windows are generated. The fixed fix is

Magento 2.3.0 – 2.3.3

#/vendor/magento/framework/View/Element/Template/File/Validator.php:140
the string

if (0 === strpos($realPath, $directory)) {
return true;
}
to replace

$realDirectory = $this->fileDriver->getRealPath($directory);
if ($realDirectory && 0 === strpos($realPath, $realDirectory)) {
return true;
}

Extension Attributes

Extension attributes are new in Magento 2. They are used to extend functionalities and often use more complex data types than custom attributes. Extension Attributes are used to allow for customization of the strict Service Contracts. These attributes do not appear on the GUI.

Third-party developers cannot change the API Data interfaces defined in the Magento Core code. However, most of these entities have a feature called extension attributes. Check the interface for the methods getExtensionAttributes() and setExtensionAttributes() to determine if they are available for the entity.

magento 2 unable to unserialize value

Open the file \vendor\magento\framework\Serialize\Serializer\json.php and replace the function unserialize() with the below

public function unserialize($string) {
/* Added the following if clause to resolve the issue */
if($this->is_serialized($string)){
$string = $this->serialize($string);
}
$result = json_decode($string, true);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new \InvalidArgumentException('Unable to unserialize value.');
}
return $result;
}

Also add the following function as well

function is_serialized($value, &$result = null) {
// Bit of a give away this one
if (!is_string($value))
{
return false;
}
// Serialized false, return true. unserialize() returns false on an
// invalid string or it could return false if the string is serialized
// false, eliminate that possibility.
if ($value === 'b:0;')
{
$result = false;
return true;
}
$length = strlen($value);
$end = '';
switch ($value[0])
{
case 's':
if ($value[$length - 2] !== '"')
{
return false;
}
case 'b':
case 'i':
case 'd':
// This looks odd but it is quicker than isset()ing
$end .= ';';
case 'a':
case 'O':
$end .= '}';
if ($value[1] !== ':')
{
return false;
}
switch ($value[2])
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
break;
default:
return false;
}
case 'N':
$end .= ';';
if ($value[$length - 1] !== $end[0])
{
return false;
}
break;
default:
return false;
}
if (($result = @unserialize($value)) === false)
{
$result = null;
return false;
}
return true;
}

Magento 2: setup upgrade error “We can’t find the role for the user you wanted”

open the file
vendor/magento/module-authorization/Model/Acl/AclRetriever.php and replaced the below code

if (!$role) {
throw new AuthorizationException(
__('We can\'t find the role for the user you wanted.')
);
}
$allowedResources = $this->getAllowedResourcesByRole($role->getId());

with

if (!$role) {
$allowedResources = array();
}

and revert it on sucess.