Populate select field dynamically based on user choice

• YorlinqNL

• June 29, 2020 at 5:40 am

The code below displays a TIME field dynamically based on the user selected date and session.

If the user selected DATE and SESSION match the DATE and SESSION subfields in the option page >> Hide the field.

Now my question is this:
Is this logic also possible for populating a select field dynamically? So if a user selects DATE X >> SESSION FIELD has option 1 & 2, but if a user selects DATE Y >> SESSION FIELD only has option 1.

Note: I now how to dynamically populate a select field but not related to the above condition example.

Here’s the 100% working code for hiding/showing fields based on dynamic conditions. It’s kinda related so I thought: Let’s share…

add_filter('acf/prepare_field/name=booking_time_session_1', 'yl_check_booking_setting_exceptions_session_1');
function yl_check_booking_setting_exceptions_session_1($field){
    
    // Reset conditions
    // Warning: Conditions set in the UI won't be compatible!
    $conditions = array();

    // Creating Base Condition
    $conditions[] = array(
        array(
            'field'     => 'field_5ed4181bd63dc',
            'operator'  => '==',
            'value'     => '1',
        )
    );

    if(have_rows('booking_setting_exceptions', 'booking_settings')):
        while(have_rows('booking_setting_exceptions', 'booking_settings')): the_row();
        
            // Check: Booking Settings Exceptions Session
            if(get_sub_field('booking_setting_exceptions_session') == '2')
                continue;
            
            $date = date_i18n('Ymd', strtotime(get_sub_field('booking_setting_exceptions_date', 'booking_settings')));
            
            // Check: Booking Settings Exceptions Date
            if(empty($date))
                continue;
            
            // Adding a new AND condition inside Base condition, at the index = 0
            $conditions[0][] = array(
                'field'     => 'field_5ed4178dd63d7',
                'operator'  => '!=',
                'value'     => $date,
            );
        
        endwhile;
    endif;

    // Setting the full condition
    $field['conditional_logic'] = $conditions;
     
     return $field;
    
}