TYPO3 BE TCA type Preview Image - php

Question

i search for a Solution:
How can i add a Preview Image for a TCA type?
Example: I have 3 different types and would like to display a preview image for them. The same as the t3 backend layouts.
Just like the Backend-Layout:
Maybe there is a solution to this?

Answer 1

The documentation is explaining it:
https://docs.typo3.org/m/typo3/reference-tca/main/en-us/Columns/Examples.html#select-drop-down-for-records-represented-by-images
This is the example code:
[
'columns' => [
'select_single_12' => [
'label' => 'select_single_12 foreign_table selicon_field',
'config' => [
'type' => 'select',
'renderType' => 'selectSingle',
'foreign_table' => 'tx_styleguide_elements_select_single_12_foreign',
'fieldWizard' => [
'selectIcons' => [
'disabled' => false,
],
],
],
],
],
]
And the code for the field of the connected table is this:
[
'ctrl' => [
'title' => 'Form engine elements - select foreign single_12',
'label' => 'fal_1',
'selicon_field' => 'fal_1',
// ...
],
'columns' => [
// ...
'fal_1' => [
'label' => 'fal_1 selicon_field',
'config' => \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::getFileFieldTCAConfig(
'fal_1',
[
'maxitems' => 1,
],
$GLOBALS['TYPO3_CONF_VARS']['SYS']['mediafile_ext']
),
],
],
// ...
];
As you have a strange label inside your field it's not clear if you want to link to an image, to a text or even to a field that offers a combination like it's done with relations to the table sys_file by the intermediate table sys_file_ref.
So defining more precise what you need exactly might help to give you a more detailed answer. You can edit your answer to add this description.