[development] AHAH Questions

[Randy Fay]

Please start your investigations using the AHAH Example in the
Examples Project (http://drupal.org/project/examples) and
http://randyfay.com/ahah. If you build a form starting with that
foundation, then please come back for help at that point.

Thanks,
-Randy

On Thu, Mar 10, 2011 at 9:10 PM, Austin Einter <austin.einter at gmail.com> wrote:
> Hi All
> I am quite new to AHAH, strugling to find how it works. I referred
> documentation and poll module.
> I want 3 fields in a fieldset, Company, Start-Date, End-Date.
>
> I have a button "Add More Company", if clicked, it should add a new row
> having Company, Start-Date, End-Date dynamically.
> How many times user clicks, those many rows needs to be added.
>
> To get the above mentioned form, I have put the code as below.
> However, on button click, new rows are not adding up.
>
> Please help me to find whats the error with code.
>
> Regards,
> Austin
>
> Code
> ===============================================
> <?php
> function submitresume_menu() {
>  $items = array();
>  $items['submitresume/form'] = array(
>  'title' => t('Submit Your Resume'),
>  'page callback' => 'submitresume_form',
>  'access arguments' => array('access content'),
>  'description' => t('Submit Your Resume'),
>  'type' => MENU_CALLBACK,
>  );
>  $items['submitresume/form/morecompanies'] = array(
>  'page callback' => 'submitresume_add_more_companies',
>  'access arguments' => array('access content'),
>  'type' => MENU_CALLBACK,
>  );
>  return $items;
> }
> function submitresume_form() {
>  return drupal_get_form('submitresume_my_form');
> }
> function submitresume_my_form($form_state) {
>  $form = array('#cache' => TRUE,);
>  if (isset($form_state['all_companies'])) {
>   $all_companies = $form_state['all_companies'];
>  }
>  else {
>   $all_companies = 1;
>  }
>  //Add a wrapper for the companies and add more button.
>  $form['work_history_wrapper'] = array(
>   '#title' => t("Work history: Mention all the companies you gave worked so
> far"),
>   '#type' => 'fieldset',
>   '#collapsible' => TRUE,
>   '#collapsed' => FALSE,
>   '#prefix' => '<div class="clear-block" id="work-history-wrapper">',
>   '#suffix' => '</div>',
>  );
>  //Container for just companies
>  $form['work_history_wrapper']['allcompanies'] = array(
>   '#prefix' => '<div id="all-companies">',
>   '#suffix' => '</div>',
>  );
>  for ($delta = 0; $delta < $all_companies; $delta++)
>  {
>   //Need to do: Get the company name, start date and end date, pass it to
> submitresume_add_one_company_form, so that it is shown properly
>   $form['work_history_wrapper']['allcompanies'][$delta] =
> submitresume_add_one_company_form($delta, $company_name, $compsdt,
> $compedt);
>  }
>  $form['work_history_wrapper']['morecompany'] = array(
>   '#type' => 'button',
>   '#value' => t('Add More Companies'),
>   '#weight' => 1,
>   '#submit' => array('add_more_companies_submit'), // If no javascript
> action.
>   '#ahah' => array(
>    'path' => 'submitresume/form/morecompanies',
>    'wrapper' => 'all-companies',
>    'method' => 'replace',
>    'effect' => 'fade',
>   ),
>  );
>
> $form['submit'] = array(
> '#type' => 'submit',
> '#value' => 'Submit',
> );
> return $form;
> }
> function submitresume_add_one_company_form($delta, $company_name, $compsdt,
> $compedt) {
>  $form = array(
>   '#tree' => TRUE,
>  );
>  $form['companies'] = array(
>   '#type' => 'textfield',
>   '#title' => t('Company')."-".$delta,
>   '#parents' => array('allcompanies', $delta, 'companies'),
>   '#size' => 30,
>   '#maxlength' => 100,
>  );
>  $form['startdate'] = array(
>   '#type' => 'date',
>   '#title' => t('Start Date'),
>   '#parents' => array('allcompanies', $delta, 'startdate'),
>  );
>  $form['enddate'] = array(
>   '#type' => 'date',
>   '#title' => t('End Date'),
>   '#parents' => array('allcompanies', $delta, 'enddate'),
>  );
>  return $form;
> }
> function add_more_companies_submit($form, &$form_state) {
>  // Set the form to rebuild and run submit handlers.
>  node_form_submit_build_node($form, $form_state);
>  // Make the changes we want to the form state.
>  if ($form_state['values']['morecompany']) {
>   $n = $_GET['q'] == 'submitresume/form/morecompanies' ? 1 : 5;
>   $form_state['all_companies'] =
> count($form_state['values']['allcompanies']) + $n;
>  }
> }
> function  submitresume_add_more_companies() {
>  include_once 'modules/node/node.pages.inc';
>  $form_state = array('storage' => NULL, 'submitted' => FALSE);
>  $form_build_id = $_POST['form_build_id'];
>  // Get the form from the cache.
>  $form = form_get_cache($form_build_id, $form_state);
>  $args = $form['#parameters'];
>  $form_id = array_shift($args);
>  // We will run some of the submit handlers so we need to disable
> redirecting.
>  $form['#redirect'] = FALSE;
>  // We need to process the form, prepare for that by setting a few internals
>  // variables.
>  $form['#post'] = $_POST;
>  $form['#programmed'] = FALSE;
>  $form_state['post'] = $_POST;
>  // Build, validate and if possible, submit the form.
>  drupal_process_form($form_id, $form, $form_state);
>  // This call recreates the form relying solely on the form_state that the
>  // drupal_process_form set up.
>  $form = drupal_rebuild_form($form_id, $form_state, $args, $form_build_id);
>  // Render the new output.
>  $choice_form = $form['work_history_wrapper']['allcompanies'];
>  unset($choice_form['#prefix'], $choice_form['#suffix']); // Prevent
> duplicate wrappers.
>  $output = theme('status_messages') . drupal_render($choice_form);
>  drupal_json(array('status' => TRUE, 'data' => $output));
> }
> function submitresume_validate($form, &$form_state) {
> }
> function submitresume_submit($form, &$form_state) {
> drupal_set_message(t('The form has been submitted.'));
> }
> ?>
>



-- 
Randy Fay
Drupal Module and Site Development
randy at randyfay.com
+1  970.462.7450