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Forked from AlexSkrypnyk/mymodule.css
Created December 24, 2017 18:05
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Drupal 'add more' and 'remove single' AJAX buttons on multi value custom field using FormAPI
input.form-submit.button-small {
padding: 4px 8px;
font-weight: bold;
}
.container-inline input.form-submit.button-small + .ajax-progress.ajax-progress-throbber .throbber {
position: absolute;
left: 19px;
margin-top: 7px;
}
.container-inline input.form-submit.button-small + .ajax-progress.ajax-progress-throbber .message {
display: none;
}
function mymodule_ajax_example_add_more($form, &$form_state) {
$form['field_container'] = [
'#type' => 'container',
'#weight' => 80,
'#tree' => TRUE,
// Set up the wrapper so that AJAX will be able to replace the fieldset.
'#prefix' => '<div id="js-ajax-elements-wrapper">',
'#suffix' => '</div>',
];
$form_state['field_deltas'] = isset($form_state['field_deltas']) ? $form_state['field_deltas'] : range(0, 3);
$field_count = $form_state['field_deltas'];
foreach ($field_count as $delta) {
$form['field_container'][$delta] = [
'#type' => 'container',
'#attributes' => [
'class' => ['container-inline'],
],
'#tree' => TRUE,
];
$form['field_container'][$delta]['field1'] = [
'#type' => 'textfield',
'#title' => t('Field 1 - ' . $delta),
'#size' => 10,
];
$form['field_container'][$delta]['field2'] = [
'#type' => 'textfield',
'#title' => t('Field 2 - ' . $delta),
'#size' => 10,
];
$form['field_container'][$delta]['remove_name'] = [
'#type' => 'submit',
'#value' => t('-'),
'#submit' => ['mymodule_ajax_example_add_more_remove'],
// See the examples in ajax_example.module for more details on the
// properties of #ajax.
'#ajax' => [
'callback' => 'mymodule_ajax_example_add_more_remove_callback',
'wrapper' => 'js-ajax-elements-wrapper',
],
'#weight' => -50,
'#attributes' => [
'class' => ['button-small'],
],
'#name' => 'remove_name_' . $delta,
];
}
$form['field_container']['add_name'] = [
'#type' => 'submit',
'#value' => t('Add one more'),
'#submit' => ['mymodule_ajax_example_add_more_add_one'],
// See the examples in ajax_example.module for more details on the
// properties of #ajax.
'#ajax' => [
'callback' => 'mymodule_ajax_example_add_more_add_one_callback',
'wrapper' => 'js-ajax-elements-wrapper',
],
'#weight' => 100,
];
$form['other_field'] = [
'#type' => 'textfield',
'#title' => t('Other field'),
];
return $form;
}
function mymodule_ajax_example_add_more_remove($form, &$form_state) {
$delta_remove = $form_state['triggering_element']['#parents'][1];
$k = array_search($delta_remove, $form_state['field_deltas']);
unset($form_state['field_deltas'][$k]);
$form_state['rebuild'] = TRUE;
drupal_get_messages();
}
function mymodule_ajax_example_add_more_remove_callback($form, &$form_state) {
return $form['field_container'];
}
function mymodule_ajax_example_add_more_add_one($form, &$form_state) {
$form_state['field_deltas'][] = count($form_state['field_deltas']) > 0 ? max($form_state['field_deltas']) + 1 : 0;
$form_state['rebuild'] = TRUE;
drupal_get_messages();
}
function mymodule_ajax_example_add_more_add_one_callback($form, $form_state) {
return $form['field_container'];
}
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