Magento 2 tree category. Admin. System

[przemyslaw5e24]

Hi

How to display a category tree in system.xml and from weseckbox and after "save" have a table of selected categories?

[przemyslaw5e24]

Actually, I mean the category tree where I select and deselect categories in the checkbox.

[sdokdesgma3028]

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@liteblue wrote:

Hi

How to display a category tree in system.xml and from weseckbox and after "save" have a table of selected categories?

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What is the problem? Just add condition : IF currentCategory dosn't have childs THEN use parent id of currentCategory as currentCategoryId

[przemyslaw5e24]

This is not the problem. I do not know how to have in system.xml just like here, but that they should be categoriestree

I am a beginner in Magento programming and I don't know how to deal with it

[przemyslaw5e24]

I managed to do just like in the picture. But unfortunately it saves only one value for me

 <field id="ep_category" translate="label" type="checkboxes" sortOrder="1" showInDefault="1" showInWebsite="0" showInStore="0">
                    <label>Wybierz katetegorie</label>
                    <source_model>Test\Ep\Model\Config\Source\Category</source_model>
                    <backend_model>Magento\Config\Model\Config\Backend\Serialized\ArraySerialized</backend_model>
                </field>