Magento 2 / Custom Config Field Array Mapping - php

Question

hope your will have the time to help me.
On any circumstances my Magento 2 Array Mapping will not write selected="selected" to my field. Getting crazy about this.
The Data will be saved and fetched correct.
Big thanks to your help.
Version: Magento 2.2.2
/app/code/Sumedia/Switcher/Block/Adminhtml/System/Config/Form/Field/Group.php
<?php
namespace Sumedia\Switcher\Block\Adminhtml\System\Config\Form\Field;
class Group extends \Magento\Framework\View\Element\Html\Select {
/**
* #var \Magento\Store\Model\StoreManager
*/
protected $storeManager;
/**
* Store constructor.
* #param \Magento\Framework\View\Element\Context $context
* #param \Magento\Store\Model\StoreManager $storeManager
* #param array $data
*/
public function __construct(
\Magento\Framework\View\Element\Context $context,
\Magento\Store\Model\StoreManager $storeManager,
array $data = []
){
parent::__construct($context, $data);
$this->storeManager = $storeManager;
}
/**
* #return string
*/
public function _toHtml(){
if(!$this->getOptions()){
$groups = $this->storeManager->getGroups();
foreach($groups AS $row){
$this->addOption($row->getGroupId(),$row->getName());
}
}
return parent::_toHtml();
}
/**
* #param string $value
* #return $this
*/
public function setInputName($value){
return $this->setName($value);
}
}
/app/code/Sumedia/Switcher/Block/Adminhtml/System/Config/Form/Field/Groupmap.php
<?php
namespace Sumedia\Switcher\Block\Adminhtml\System\Config\Form\Field;
use Magento\Backend\Block\Template\Context;
use Magento\Config\Block\System\Config\Form\Field\FieldArray\AbstractFieldArray;
class Groupmap extends AbstractFieldArray
{
/**
* #var \Sumedia\Switcher\Block\Adminhtml\System\Config\Form\Field\Group
*/
protected $renderer;
public function __construct(
Context $context,
array $data = [])
{
parent::__construct($context, $data);
}
public function getRenderer()
{
if(!$this->renderer){
$this->renderer = $this->getLayout()->createBlock(
'Sumedia\Switcher\Block\Adminhtml\System\Config\Form\Field\Group',
'',['data' => ['is_renderer_to_js_template' => true]]);
}
return $this->renderer;
}
protected function _prepareToRender()
{
$renderer = $this->getRenderer();
$this->addColumn('store',[
'label' => __('Store'),
'renderer'=>$renderer
]);
$this->addColumn('name',[
'label' => __('Name')
]);
$this->_addAfter = false;
$this->_addButtonLabel = __('Add');
parent::_prepareToRender();
}
protected function _prepareArrayRow(\Magento\Framework\DataObject $row)
{
$store = $row->getStore();
$options = array();
if($store){
$options['option_'.$this->getRenderer()->calcOptionHash($store)] = 'selected="selected"';
}
$row->setData('option_extra_attrs',$options);
}
public function renderCellTemplate($columnName)
{
if($columnName == 'store'){
$this->_columns[$columnName]['class'] = 'input-text required-entry validate-number';
$this->_columns[$columnName]['style'] = 'width:50px';
}
return parent::renderCellTemplate($columnName);
}
}
/app/code/Sumedia/Switcher/Model/Adminhtml/System/Config/Groupmap.php
<?php
namespace Sumedia\Switcher\Model\Adminhtml\System\Config;
use Magento\Framework\App\Config\Value;
class Groupmap extends Value {
public function beforeSave(){
$data = array();
$value = $this->getValue();
if(is_array($value)) {
foreach($value AS $_data){
if(!isset($_data['store']) || !isset($_data['name'])){
continue;
}
$id = uniqid();
$data[$id] = array('store' => $_data['store'],'name' => $_data['name']);
}
}
$this->setValue(serialize($data));
return $this;
}
public function afterLoad(){
$value = #unserialize($this->getValue());
if (is_array($value)) {
$data = array();
foreach($value AS $id => $_data){
$data[$id] = array('store' => $_data['store'], 'name' => $_data['name']);
}
$this->setValue($data);
}
return $this;
}
}
/app/code/Sumedia/Switcher/etc/adminhtml/system.xml
<?xml version="1.0" encoding="UTF-8" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
<system>
<tab id="sumedia" translate="label" sortOrder="100">
<label>Sumedia</label>
</tab>
<section id="sumedia_switcher" translate="label" sortOrder="100" showInDefault="1" showInStore="1" showInWebsite="1">
<class>seperator-top</class>
<label>Switcher</label>
<tab>sumedia</tab>
<resource>Sumedia_Switcher::config</resource>
<group id="general" translate="label" type="text" sortOrder="10" showInWebsite="1" showInStore="1" showInDefault="1">
<label>General</label>
<field id="enabled" translate="label" type="select" sortOrder="1" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
<label>Enabled</label>
<source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
</field>
</group>
<group id="store_switch" translate="label" type="text" sortOrder="10" showInWebsite="1" showInStore="1" showInDefault="1">
<label>Store Switch</label>
<field id="enabled" translate="label" type="select" sortOrder="1" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
<label>Enabled</label>
<source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
</field>
<field id="use_mapping" translate="label" type="select" sortOrder="1" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
<label>Use Mapping</label>
<source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
</field>
<field id="mapping" translate="label comment tooltip" sortOrder="1" showInDefault="1" showInWebsite="1" showInStore="1">
<label>Mapping</label>
<frontend_model>Sumedia\Switcher\Block\Adminhtml\System\Config\Form\Field\Groupmap</frontend_model>
<backend_model>Sumedia\Switcher\Model\Adminhtml\System\Config\Groupmap</backend_model>
</field>
</group>
</section>
</system>
</config>

Answer 1

I see that you have reload all needed methods with your data, but there you have an issue in getRenderer method in Sumedia\Switcher\Block\Adminhtml\System\Config\Form\Field\Groupmap class, try to change 'is_renderer_to_js_template' to 'is_render_to_js_template'
I had the same issue during development custom module couple days ago and found a solution only after reviewing magento's core code (catalog inventory module's code) =)