Limit the columns for core/columns

Hi @rose18
Yes, it is possible to set the maximum number of columns for the “core/columns” block in WordPress. To do this, you can use the register_block_type function and specify the max_columns attribute in the supports array when registering the block.

Here is an example of how you can set the maximum number of columns to 3 for the “core/columns” block:

function my_custom_block_registration() {
    // Register the "core/columns" block
    register_block_type( 'core/columns', array(
        'supports' => array(
            'max_columns' => 3,
        ),
    ) );
}
add_action( 'init', 'my_custom_block_registration' );

This code should be placed in your theme’s functions.php file or in a custom plugin. After adding this code, the “core/columns” block will only allow a maximum of 3 columns.

Thank you @faisalahammad ! When I add that code to my functions.php file, I get this error message:

Notice: Function WP_Block_Type_Registry::register was called incorrectly. Block type "core/columns" is already registered. Please see Debugging in WordPress for more information.

Is there a way to fix it?