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<?php
function asaf_example_gui_buttons($form, &$form_state) {
drupal_set_message(t('To ajaxify this form you have to open !link and put current form ID (%formid) in the forms textarea. You can enable or disable ajax just for some buttons (button IDs: %increment, %decrement, %multiply). Follow the instructions on the !link.', array(
'!link' => l('asaf admin page', 'admin/config/system/asaf'),
'%formid' => __FUNCTION__,
'%increment' => 'actions][increment',
'%decrement' => 'actions][decrement',
'%multiply' => 'actions][multiply',
)), 'warning');
$form['up'] = array(
'#markup' => l('← Go to the examples list', 'examples/asaf_example'),
);
$form['number'] = array(
'#type' => 'textfield',
'#title' => t('x'),
'#required' => TRUE,
);
$form['actions'] = array(
'#type' => 'actions',
);
$form['actions']['increment'] = array(
'#type' => 'submit',
'#value' => t('x+1'),
'#process' => array(
'ajax_process_form',
'asaf_example_gui_buttons_button_process',
),
);
$form['actions']['decrement'] = array(
'#type' => 'submit',
'#value' => t('x-1'),
'#process' => array(
'ajax_process_form',
'asaf_example_gui_buttons_button_process',
),
);
$form['actions']['multiply'] = array(
'#type' => 'submit',
'#value' => t('x*2'),
'#process' => array(
'ajax_process_form',
'asaf_example_gui_buttons_button_process',
),
);
return $form;
}
function asaf_example_gui_buttons_validate($form, &$form_state) {
if (!is_numeric(trim($form_state['values']['number']))) {
form_set_error('number', t('You should specify a correct number'));
}
}
function asaf_example_gui_buttons_submit($form, &$form_state) {
$x = trim($form_state['values']['number']);
switch (end($form_state['clicked_button']['#parents'])) {
case 'increment':
drupal_set_message(t('Result: %result', array(
'%result' => $x + 1,
)));
break;
case 'decrement':
drupal_set_message(t('Result: %result', array(
'%result' => $x - 1,
)));
break;
case 'multiply':
drupal_set_message(t('Result: %result', array(
'%result' => $x * 2,
)));
break;
}
}
function asaf_example_gui_buttons_button_process($element) {
$element['#value'] .= isset($element['#ajax']) ? ' (ajaxified)' : '';
return $element;
}
