Magento 2 event observer custom config save given error

Question

I have a custom section tab in configuration my section url is: http://dev.test/admin/admin/system_config/edit/section/vendor_module/key/?????????

exception(s):
Exception #0 (Magento\Framework\Exception\LocalizedException): Invalid XML in file .../app/code/Vendor/Module/etc/adminhtml/events.xml:
Element 'event', attribute 'name': [facet 'pattern'] The value 'admin_system_config_changed_section_vendor_module' is not accepted by the pattern '[a-zA-Z_]+'.
Line: 3

Element 'event', attribute 'name': 'admin_system_config_changed_section_vendor_module' is not a valid value of the atomic type 'eventName'.
Line: 3

Element 'event', attribute 'name': Warning: No precomputed value 
available, the value was either invalid or something strange happend.
Line: 3
...

events.xml:

<?xml version="1.0" encoding="UTF-8"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
<event name="admin_system_config_changed_section_vendor_module">
    <observer name="custom_admin_system_config_change_vendor_module" instance="Vendor\Module\Observer\ConfigObserver"/>
</event>
</config>

It works with general and other sections. Any ideas?

BartZalas · Accepted Answer · 2019-06-04 21:25:34Z

2

I think is related with bug and your vendor or module have number in name. Like 'b2b' or something.

Solution is to change names with this numbers or upgrade to Magento 2.3

Ref. https://github.com/magento/magento2/issues/5035 enter link description here

answered Jun 4, 2019 at 21:25

BartZalas

1,79713 silver badges23 bronze badges

spot on you are right I do have a number in my vendor I've applied the fix from the link github.com/Mobecls/magento2/commit/… ... <xs:restriction base="xs:string"> <xs:pattern value="[a-zA-Z_]+" /> //remove <xs:pattern value="[a-zA-Z0-9_]+" />//added </xs:restriction> ...

Juliano Vargas
– Juliano Vargas

2019-06-05 09:22:57 +00:00
Commented Jun 5, 2019 at 9:22

Add a comment |

Dominic Pixie · Accepted Answer · 2019-06-04 19:58:11Z

I cant see any issue with that XML

Compare it with this

<?xml version="1.0" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="custom_admin_system_config_change_vendor_module">
        <observer instance="Xigen\Config\Observer\Backend\Custom\AdminSystemConfigChangeVendorModule" name="xigen_config_observer_backend_custom_adminsystemconfigchangevendormodule_custom_admin_system_config_change_vendor_module"/>
    </event>
</config>

AdminSystemConfigChangeVendorModule.php

namespace Xigen\Config\Observer\Backend\Custom;

class AdminSystemConfigChangeVendorModule implements \Magento\Framework\Event\ObserverInterface
{
    /**
     * Execute observer
     *
     * @param \Magento\Framework\Event\Observer $observer
     * @return void
     */
    public function execute(
        \Magento\Framework\Event\Observer $observer
    ) {
        //Your observer code
    }
}

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