How to post data when clicking custom ui component button?

Question

I am using ui-component form edit and would like to add custom button "customButton" with all post data. However, it doesn't post any data except form key.

My code

 $data = [
 'label' => __('Print Address'),
 'class' => 'save',
 'data_attribute' => [
 'url' => $this->urlBuilder->getUrl('*/*/printAddress', ['id' => $this->getRequest->getParam('id')]);
 ],
 'sort_order' => 80,
 ];

Answer 1

Check CMS module as an example. You need to pass following params for submit form.

vendor/magento/module-cms/Block/Adminhtml/Page/Edit/SaveButton.php

'data_attribute' => [
 'mage-init' => [
 'buttonAdapter' => [
 'actions' => [
 [
 'targetName' => 'cms_page_form.cms_page_form',
 'actionName' => 'save',
 'params' => [
 false
 ]
 ]
 ]
 ]
 ]
],

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