TYPO3 TCA forms using AJAX for drop down lists

Question

In my TCA forms I have two drop down lists, List 1 called Campus and List 2 called Department . The Department list should change depending on the value selected in the Campus list. In other words, the Department list depends on the selected Campus item.

How do I achieve this in TYPO3 TCA forms? Normally in HTML, I would use AJAX, what should I use here?

Thanks in advance :)

Answer 1

You can use markers in your "foreign_table_where"-string. One of them is the ###REC_FIELD_[fieldname]### marker.

Example:

'campus' => array(
    'label' => 'campus',
    'config' => array(
        'type' => 'select'
    )
    'foreign_table' => 'tx_myext_domain_model_campus',
),
'department' => array(
    'label' => 'department',
    'config' => array(
        'type' => 'select'
    )
    'foreign_table' => 'tx_myext_domain_model_department',
    'foreign_table_where' => " AND tx_myext_domain_model_department.campus = '###REC_FIELD_campus###'"
)

Additionally you have to tell TCA that a change of your campus field requests an update.

In ext_tables.php:

$TCA['tx_myext_domain_model_example']['ctrl']['requestUpdate'] .= ',campus';