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I'm trying to pass data to a block within a foreach loop.

I've created a new block search.phtml and added it to my layout.xml as follows:

 <block class="Magento\CatalogSearch\Block\Advanced\Form" name="catalogsearch_advanced_form" template="Amrita_CatalogSearch::advanced/form.phtml"> <block class="Magento\CatalogSearch\Block\Advanced\Form" name="catalogsearch_advanced_search" template="Amrita_CatalogSearch::advanced/search.phtml"> <arguments> <argument name="my_arg" xsi:type="string">testvalue</argument> </arguments> </block> </block>

I want to set the value of my_arg dynamically within a loop and render the search block, where i will retrieve the value of my_arg.

i've tried the following within the parent block:

$block->GetChild('search')->SetData('my_arg', $_code); $block->getChildHtml('search');

and then to retrieve:

$_code = $block->getData('my_arg')

This throws an error:

Invalid method Magento\CatalogSearch\Block\Advanced\Form::GetChild(Array ( [0] => search ) )

What's the correct way to achieve this?

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  • In GetChild and SetData first letter must be in lowercase Commented Jun 17, 2016 at 9:41
  • $block->getChild('search')->setData('my_arg', $_code); $block->getChildHtml('search'); isn't working either, getting the error Call to a member function setData() on null Commented Jun 17, 2016 at 10:24
  • You dont have block with name "search". Try this $block->getChild('catalogsearch_advanced_search') Commented Jun 17, 2016 at 10:36
  • I tried that too, same error. Commented Jun 17, 2016 at 11:23
  • Maybe this answer will be usefull. Commented Jun 18, 2016 at 11:00

3 Answers 3

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I solved this as follows,

$block->getChildBlock("select")->setProductAttributes($_attribute, $_code); echo $block->getChildHtml('select'); $_attributes = $block->getProductAttributes();

where getProductAttributes/setProductAttributes are declared in a custom class

 namespace Amrita\CatalogSearch\Block\Advanced; use Magento\CatalogSearch\Block\Advanced; class Form extends Advanced\Form{ private $attribute; private $code; public function setProductAttributes($attribute, $code, $attributeTitle, $maxQueryLength, $isActive) { $this->attribute = $attribute; $this->code = $code; return $this; } public function getProductAttributes() { return array( 'attribute' => $this->attribute, 'code' => $this->code } }

and in the layout.xml,

 <referenceBlock name="catalogsearch_advanced_form"> <action method="setTemplate"> <argument name="template" xsi:type="string">Amrita_CatalogSearch::advanced/form.phtml</argument> </action> <block class="Amrita\CatalogSearch\Block\Advanced\Form" name="catalogsearch_advanced_search" as="search" template="Amrita_CatalogSearch::advanced/search.phtml" /> </referenceBlock>
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I used the following and it's now rendering the block:

$block->getChildHtml('catalogsearch_advanced_search')->setData('my_arg', $_attribute);

I still have an error 

Call to a member function getAttributeCode() on null

within the search block 

$_attribute = $block->getData('my_arg'); $_code = $_attribute->getAttributeCode()

i want to pass a single attribute object (rather than an attribute collection) but i can't get it to work. Is this the correct syntax?

 <arguments> <argument name="attribute" xsi:type="array"> <item name="my_arg" xsi:type="object">Magento\Catalog\Model\ResourceModel\Eav\Attribute</item> </argument> </arguments>
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getChild etc are not supported in Magento 2.

Whilst I haven't got that much experience with it yet, I have done something similar for a test module. It doesn't answer your question exactly but it may help you on the way:

$this->getLayout()->createBlock('Magento\CatalogSearch\Block\Advanced\Form')->setMyArg($_attribute)->toHtml();
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