I have a Checkbox with different values. When a user change the Checkbox I will trigger the Drupal-Function field_attach_update http://api.drupal.org/api/drupal/modules!field!field.attach.inc/function/field_attach_update/7
I know how I check the checkbox-change with jQuery but how can I trigger the Drupal-Function then?
You'll want to check out the Form API ajax options. Specifically I think you'll want to define an ajax['callback'] function that calls field_attach_update.
<?php
function my_form_func($form, $form_state) {
$my_checkbox_val = isset($form_state['values']['my_checkbox']) ? $form_state['values']['my_checkbox'] : NULL;
$form['my_checkbox'] = array(
'#type' => 'checkbox',
'#title' => t('Check me'),
'#default_value' => $my_checkbox_val,
'#return_value' => $nid, // Assuming you are working with a node, but could be any entity
'#ajax' => array(
'callback' => 'my_form_field_update_func',
'event' => 'click',
),
);
return $form;
}
function my_form_field_update_func($form, $form_state) {
if (isset($form_state['values']['my_checkbox'])) {
$node = node_load($form_state['values']['my_checkbox']);
field_attach_update('node', $node);
}
return $form['my_checkbox'];
}
?>
Related
I have a custom form in Drupal 8. Form has managed_file field with multiple true. I am facing challenge regarding the limit of number of files upload to this field.
I have to make this managed_file field to upload only 3 images.
Can someone help me regarding this?
I have tried below code.
public function buildForm(array $form, FormStateInterface $form_state) {
$form['upload_doc'] = array(
'#type' => 'managed_file',
'#title' => 'File Upload',
'#upload_location' => 'public://upload_document/',
'#required' => TRUE,
'#multiple' => TRUE,
'#upload_validators' => array(
'file_validate_extensions' => array('jpg jpeg png'),
'file_validate_size' => 2000,
),
);
// Add a submit button that handles the submission of the form.
$form['actions']['submit'] = [
'#type' => 'submit',
'#value' => $this->t('Submit'),
];
return $form;
}
public function validateForm(array &$form, FormStateInterface $form_state) {
$fileObj = $form_state->getValue('upload_doc');
if (count($fileObj) > 3) {
drupal_set_message('File limit exceed'.count($fileObj), 'error');
return false;
} else {
return true;
}
}
The problem is, i am not able to validate file upload limit. It's allow to upload more than limit. Please help me
Thank you
public function validateForm(array &$form, FormStateInterface $form_state) {
$fileObj = $form_state->getValue('upload_doc');
if (count($fileObj) >= 4) {
$form_state->setErrorByName('upload_doc', $this->t("<em>Only 3 images are allowed per run</em>."));}}
There is currently an opened issue to get this feature out of the box.
In the meanwhile, you can implement "element_validate" in your form:
$form['file_managed'] = [
'#type' => 'managed_file',
'#title' => $this->t('Files'),
'#multiple' => TRUE,
'#cardinality' => 3,
'#element_validate' => [
'your_module_max_files_validation',
],
];
Then in your_module.module:
/**
* Custom validation handler. Validate number of files.
*/
function your_module_max_files_validation($element, FormStateInterface &$form_state, $form) {
$is_removal = strpos($form_state->getTriggeringElement()['#name'], 'remove_button') !== FALSE ? TRUE : FALSE;
if (!empty($element['#cardinality']) && count($element['#files']) > $element['#cardinality'] && !$is_removal) {
$form_state->setErrorByName($element['#name'], t('Only max #limit files allowed.', [
'#limit' => $element['#cardinality'],
]));
}
}
Im curently using drupal 8 and I have created form using form api,
The below code under Module directory
// module/src/Form/ContributeForm
class ContributeForm extends FormBase {
public function getFormId() {
return 'amazing_forms_contribute_form';
}
public function buildForm(array $form, FormStateInterface $form_state)
{
$form['title'] = array(
'#type' => 'textfield',
'#title' => t('Title'),
'#required' => TRUE,
);
$form['video'] = array(
'#type' => 'textfield',
'#title' => t('Youtube video'),
);
$form['video'] = array(
'#type' => 'textfield',
'#title' => t('Youtube video'),
);
$form['develop'] = array(
'#type' => 'checkbox',
'#title' => t('I would like to be involved in developing this
material'),
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('Submit'),
);
return $form;
}
public function validateForm(array &$form, FormStateInterface $form_state) {
}
public function submitForm(array &$form, FormStateInterface $form_state) {
}
}
Now I need to render above vairables in twig template like below
//themes/page.html.twig
<body>
{{form.title}}
{{form.video}}
{{form.video}}
</body>
the twig will be under theme folder.Is it possible to get variable in page.html.twig file??
The best way to render and custom your form via Twig, you'd use $form['#theme'] value in your form. Example below:
module_name/scr/Form/your_form.php
public function buildForm(array $form, FormStateInterface $form_state){
.....
.....
$form['#theme'] = 'your_form_theme';
return $form;
}
module_name/form.module
function form_theme() {
$themes['your_form_theme'] = ['render element' => 'form'];
return $themes;
}
What is left is creating your custom twig and insert you form fields.
module_name/templates/your-form-theme.html.twig
<body>
{{form.field_1}}
{{form.field_2}}
{{form.field_3}}
</body>
Hope it helps you!
You can create a page by using the controller. From that, you can get the form elements.
Create a module_nameController.php file inside src/Controller folder. In that file create a class that should be extended to Controllerbase. In that file, by using form builder function you can get the form elements.
I am building a custom module which should display a calendar created by a third-part library. So far, so good. The only problem is, the calendar appears on top of page, even above header. It does not seems to be css-related.
This is the way it looks:
This is my module file:
require_once 'includes/apphp-calendar/calendar.class.php';
function calendario_menu(){
$items = array();
$items['eventos/calendario'] = array(
'title' => 'Calendario',
'description' => 'Calendario de Eventos.',
'page callback' => '_page_calendario',
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
return $items;
}
function _page_calendario() {
$objCalendar = new Calendar();
$calendar = $objCalendar->Show();
return array(
'#markup' => $calendar
);
}
Seems to me like the Show function of the calendar class outputs rather than returning a string.
try this:
function _page_calendario() {
$objCalendar = new Calendar();
ob_start();
$objCalendar->Show();
$calendar = ob_get_contents();
ob_end_clean();
return array(
'#markup' => $calendar
);
}
I am adding some autocomplete on a form alter. The problem is that in the callback, only the string in the textfield The autocomplete is on, is available. I also want to access a value from another textfield in the callback. How is this possible ?
/**
* Implements hook_form_alter().
*/
function webform_conversion_jquery_form_webform_client_form_1_alter(&$form, &$form_state, $form_id) {
//Load some extra function to process data
module_load_include('inc', 'webform_conversion_jquery', '/includes/dataqueries');
//Add extra js files
drupal_add_js(drupal_get_path('module', 'webform_conversion_jquery') . '/js/conversionform.js');
$form['submitted']['correspondentadress']['cor_street']['#autocomplete_path'] = 'conversionform/conversion_street';
}
}
/**
* Implements hook_menu().
*/
function webform_conversion_jquery_menu() {
$items = array();
$items['conversionform/conversion_street'] = array(
'title' => 'Conversion street autocomplete',
'page callback' => 'conversion_street_autocomplete',
'access callback' => 'user_access',
'access arguments' => array('access content'),
'type' => MENU_CALLBACK,
);
return $items;
}
/**
* Retrieve a JSON object containing autocomplete suggestions for streets depending on the zipcode.
*/
function conversion_street_autocomplete($street = '') {
$street = "%" . $street . "%";
$matches = array();
$result = db_select('conversion_adresslist')
->fields('conversion_adresslist', array('street'))
->condition('street', $street, 'like')
->execute();
foreach ($result as $street) {
$matches[$street->street] = $street->street;
}
drupal_json_output($matches);
}
I just want to be able to post extra information in the function:
conversion_street_autocomplete($street = '', $extraparameter)
I had the same problem and have figured out a way, which is not too strenuous. It involves overriding the textfield theme and then passing your parameter to the theme function.
First create declare your theme function:
function mymodule_theme() {
$theme_hooks = array(
'my_module_autocomplete' => array(
'render element' => 'element',
),
);
return $theme_hooks;
}
Next we need to add the theme and the variable to our form element. In my case, the form element is part of a field widget:
function my_module_field_widget_form($form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
if($instance['widget']['type'] == 'my_module_field_type') {
$element['my_module_field'] = array(
'#type' => 'textfield',
'#autocomplete_path' => 'my-module/autocomplete',
// THIS IS THE IMPORTANT PART - ADD THE THEME AND THE VARIABLE.
'#theme' => 'my_module_autocomplete',
'#my_module_variable' => $field['field_name'],
);
}
return $element;
}
Then implement the theme function. This is a copy of theme_textfield from includes/form.inc with one important difference - we append the variable to the autocomplete path:
function theme_my_module_autocomplet($variables) {
$element = $variables['element'];
$element['#attributes']['type'] = 'text';
element_set_attributes($element, array('id', 'name', 'value', 'size', 'maxlength'));
_form_set_class($element, array('form-text'));
$extra = '';
if ($element['#autocomplete_path'] && drupal_valid_path($element['#autocomplete_path'])) {
drupal_add_library('system', 'drupal.autocomplete');
$element['#attributes']['class'][] = 'form-autocomplete';
$attributes = array();
$attributes['type'] = 'hidden';
$attributes['id'] = $element['#attributes']['id'] . '-autocomplete';
// THIS IS THE IMPORTANT PART. APPEND YOUR VARIABLE TO THE AUTOCOMPLETE PATH.
$attributes['value'] = url($element['#autocomplete_path'] . '/' . $element['#my_module_variable'], array('absolute' => TRUE));
$attributes['disabled'] = 'disabled';
$attributes['class'][] = 'autocomplete';
$extra = '<input' . drupal_attributes($attributes) . ' />';
}
$output = '<input' . drupal_attributes($element['#attributes']) . ' />';
return $output . $extra;
}
Now the variable will be available as the first parameter on the autocomplete callback function:
function _my_module_autocomplete($my_module_variable, $search_string) {
// Happy days, we now have access to our parameter.
}
Just in case anyone is still having trouble with this I found a great solution while trying to figure out how to do this. I had a year select list and that dictated what data was displayed in the autocomplete field. The solution basically has an ajax callback function for the select list that can then update the autocomplete field with an extra parameter in the url. Anyways, it is really well explained in the following article.
http://complexdan.com/passing-custom-arguments-drupal-7-autocomplete/
*A note of caution, I was going crazy trying to figure out why it did not work and it turns out you can't have the same form on the page twice (I needed to because I was displaying it differently for mobile devices) because you are using an id for the ajax callback. I added an extra argument to accomplish that. It is called uniqueid in the below example.
function report_cards_comparison_form($form, &$form_state, $uniqueid) {
$curryear = t('2012');
$form['year_select'] = array(
'#title' => t('School Year'),
'#type' => 'select',
'#options' => array(
'2012' => t('2012'),
'2013' => t('2013'),
'2014' => t('2014'),
'2015' => t('2015'),
),
'#default_value' => $curryear,
'#ajax' => array(
'callback' => 'report_cards_comparison_form_callback',
'wrapper' => $uniqueid,
'progress' => array(
'message' => 'Updating Schools...',
'type' => 'throbber'
),
),
);
$form['choice'] = array(
//'#title' => t('Search By: School Name'),
'#type' => 'textfield',
'#attributes' => array(
'class' => array('school-choice'),
'placeholder' => t('Start Typing School Name...'),
),
'#required' => TRUE,
'#autocomplete_path' => 'reportcards/autocomplete/' . $curryear,
'#prefix' => '<div id="' . $uniqueid . '">',
'#suffix' => '</div>',
);
$form['submit'] = array(
'#type' => 'submit',
'#prefix' => '<div class="submit-btn-wrap">',
'#suffix' => '</div>',
'#value' => t('Search'),
'#attributes' => array('id' => 'add-school-submit'),
);
return $form;
}
/**
* Ajax Callback that updates the autocomplete ajax when there is a change in the Year Select List
*/
function report_cards_comparison_form_callback($form, &$form_state) {
unset($form_state['input']['choice'], $form_state['values']['choice']);
$curryear = $form_state['values']['year_select'];
$form_state['input']['choice'] = '';
$form['choice']['#value'] = '';
$form['choice']['#autocomplete_path'] = 'reportcards/autocomplete/' . $curryear;
return form_builder($form['#id'], $form['choice'], $form_state);
}
and I can call the form by doing this...
print render(drupal_get_form('report_cards_comparison_form', 'desktop-schoolmatches'));
You can do it by overriding methods from autocomplete.js in your own js. Here is example:
(function($) {
Drupal.behaviors.someModuleOverrideAC = {
attach: function(context, settings) {
// Next is copied and adjusted method from autocomplete.js
Drupal.jsAC.prototype.populatePopup = function() {
var $input = $(this.input);
var position = $input.position();
// Show popup.
if (this.popup) {
$(this.popup).remove();
}
this.selected = false;
this.popup = $('<div id="autocomplete"></div>')[0];
this.popup.owner = this;
$(this.popup).css({
top: parseInt(position.top + this.input.offsetHeight, 10) + 'px',
left: parseInt(position.left, 10) + 'px',
width: $input.innerWidth() + 'px',
display: 'none'
});
$input.before(this.popup);
// Do search.
this.db.owner = this;
if ($input.attr('name') === 'field_appartment_complex') {
// Overriden search
// Build custom search string for apartments autocomplete
var $wrapper = $('div.apartments-autocomplete');
var $elements = $('input, select', $wrapper);
var searchElements = {string: this.input.value};
$elements.each(function() {
searchElements[$(this).data('address-part')] = $(this).val();
});
var string = encodeURIComponent(JSON.stringify(searchElements));
this.db.search(string);
}
else {
// Default search
this.db.search(this.input.value);
}
};
}
};
}(jQuery));
In your server callback:
function some_module_autocomplete_ajax($string) {
// Decode custom string obtained using overriden autocomplete js.
$components = drupal_json_decode(rawurldecode($string));
// Do you search here using multiple params from $components
}
Ok, for as far as I can see it is not possible. maybe you can roll your own with the ajax functionality in fapi http://api.drupal.org/api/drupal/developer--topics--forms_api_reference.html/7#ajax
For now I solved it by implementing jquery.ui.autocomplete which is included in drupal 7
My main question is:
Does the theme_hook() function gets called whenever the form gets rebuilt via ahah (ahah_helper) ?
I'm trying to show a select box, with some filtering options, when the user changes it, the table below it changes too.
I have this by now:
function veiculos_listar_form($form_state)
{
$form = array();
ahah_helper_register($form, $form_state);
//biulds $options
$form['listar_veics'] = array(
'#type' => 'fieldset',
'#prefix' => '<div id="listar-veics-wrapper">',
'#suffix' => '</div>',
'#tree' => TRUE,
);
if (!isset($form_state['values']['listar_veics']['filial']))
$form['#filial_veic'] = 1;
else
$form['#filial_veic'] = $form_state['values']['listar_veics']['filial'];
$form['listar_veics']['filial'] = array(
'#type' => 'select',
'#title' => "Listar veículos da filial",
'#options' => $filiais,
'#default_value' => $form['#filial_veic'],
'#ahah' => array(
'event' => 'change',
'path' => ahah_helper_path(array('listar_veics')),
'wrapper' => 'listar-veics-wrapper',
'method' => 'replace',
),
);
return $form;
}
function veiculos_listar_form_submit($form, &$form_state)
{
}
function _listar_veiculos_tabela($filial)
{
//builds $header and $data
$table = theme_table($header, $data);
return $table;
}
function theme_veiculos_listar_form($form)
{
$output = drupal_render($form);
$filial = $form['#filial_veic'];
$output .= '<br>' . $filial . '<br>';
$output .= _listar_veiculos_tabela($filial);
return $output;
}
function veiculos_theme() {
return array(
'veiculos_listar_form' => array(
'arguments' => array('form' => NULL),),
);
}
In my little and innocent world, it should work if theme_hook is called on every ahah event (change).
The problem is, the variable printed is always the same, like what the user is choosing isn't being stored. If the user select a different options, it shows the new option, but the $filial variable is always the same when the theme prints.
Like this:
http://img230.imageshack.us/img230/9646/62144334.jpg
Any suggestion on what i could do to make this work? I'm developing our own module, so using views module isn't a good idea.
Thanks.
You should redo code this way.
Ahah callback I do not wrote, I think you would not have problem with it.
Check some examples on drupal.org
function veiculos_listar_form($form_state)
{
$form = array();
ahah_helper_register($form, $form_state);
//biulds $options
// remove divs because we do not want to reload selector with ahah
$form['listar_veics'] = array(
'#type' => 'fieldset',
'#tree' => TRUE,
);
if (!isset($form_state['values']['listar_veics']['filial']))
$form['#filial_veic'] = 1;
else
$form['#filial_veic'] = $form_state['values']['listar_veics']['filial'];
// add cover div here, because we will reload table
$form['table'] = array(
'#prefix' => '<div id="listar-veics-wrapper">',
'#suffix' => '</div>',
'#type' => 'markup',
'#value' => _listar_veiculos_tabela($form['#filial_veic']),
);
$form['listar_veics']['filial'] = array(
'#type' => 'select',
'#title' => "Listar veículos da filial",
'#options' => $filiais,
'#default_value' => $form['#filial_veic'],
'#ahah' => array(
'event' => 'change',
'path' => ahah_helper_path(array('listar_veics')),
'wrapper' => 'listar-veics-wrapper',
'method' => 'replace',
),
);
return $form;
}
function veiculos_listar_form_submit($form, &$form_state)
{
}
function _listar_veiculos_tabela($filial)
{
//builds $header and $data
$table = theme_table($header, $data);
return $table;
}
function theme_veiculos_listar_form($form)
{
$output = drupal_render($form);
return $output;
}
function veiculos_theme() {
return array(
'veiculos_listar_form' => array(
'arguments' => array('form' => NULL),),
);
}