Saving results from "add more" example to the database (#2054413) · Issues · project / examples

Saving results from "add more" example to the database

>>> [!note] Migrated issue   Reported by: [nicolash](https://www.drupal.org/user/50385) >>> I'm trying to save the submitted results via variable_set and then pre-populate the form with whatever has already been saved. Once the variable has been saved it works, but subsequent adding doesn't work anymore...the entered additional values never make it to the main submit function. I realise this is stretching the provided example, but the use case is quite realistic. I paste the changed code here in the hope someone can point me to something obvious I'm missing. <div class="codeblock"> <pre><?php /**  * This example shows a button to "add more" - add another textfield, and  * the corresponding "remove" button.  *  * It works equivalently with javascript or not, and does the same basic steps  * either way.  *  * The basic idea is that we build the form based on the setting of  * $form_state['num_names']. The custom submit functions for the "add-one"  * and "remove-one" buttons increment and decrement $form_state['num_names']  * and then force a rebuild of the form.  *  * The $no_js_use argument is simply for demonstration: When set, it prevents  * '#ajax' from being set, thus making the example behave as if javascript  * were disabled in the browser.  */ function ajax_example_add_more($form, &$form_state, $no_js_use = FALSE) {   $form['description'] = array(     '#markup' => '<div>' . t('This example shows an add-more and a remove-last button. The <a href="!ajax">AJAX version</a> does it without page reloads; the <a href="!multistep">non-js version</a> is the same code but simulates a non-javascript environment, showing it with page reloads.',       array('!ajax' => url('examples/ajax_example/add_more'), '!multistep' => url('examples/ajax_example/add_more_no_js')))     . '</div>',   );   // Because we have many fields with the same values, we have to set   // #tree to be able to access them.   $form['#tree'] = TRUE;   $form['names_fieldset'] = array(     '#type' => 'fieldset',     '#title' => t('People coming to the picnic'),     // Set up the wrapper so that AJAX will be able to replace the fieldset.     '#prefix' => '<div id="names-fieldset-wrapper">',     '#suffix' => '</div>',   );     // Get people previously saved to a variable.   $people = variable_get('ajax_example_add_more_people', array());   // Build the fieldset with the proper number of names. We'll use   // $form_state['num_names'] to determine the number of textfields to build.   if (empty($form_state['num_names']) && count($people) == 0) {     $form_state['num_names'] = 1;   }   else {     // If people have been previously saved, create as many fields.     // Only do the the first time the form is loaded, otherwise we can't     // ever change the number of fields. $form_state['num_changed'] gets     // set by both the add and remove buttons.     if (!isset($form_state['num_changed'])) {       $form_state['num_names'] = count($people);     }   }   for ($i = 0; $i < $form_state['num_names']; $i++) {     if (isset($people[$i])) {       $value = $people[$i];     }     else {       $value = '';     }         $form['names_fieldset']['name'][$i] = array(       '#type' => 'textfield',       '#title' => t('Name'),       '#value' => $value,     );   }   $form['names_fieldset']['add_name'] = array(     '#type' => 'submit',     '#value' => t('Add one more'),     '#submit' => array('ajax_example_add_more_add_one'),     // See the examples in ajax_example.module for more details on the     // properties of #ajax.     '#ajax' => array(       'callback' => 'ajax_example_add_more_callback',       'wrapper' => 'names-fieldset-wrapper',     ),   );   if ($form_state['num_names'] > 1) {     $form['names_fieldset']['remove_name'] = array(       '#type' => 'submit',       '#value' => t('Remove one'),       '#submit' => array('ajax_example_add_more_remove_one'),       '#ajax' => array(         'callback' => 'ajax_example_add_more_callback',         'wrapper' => 'names-fieldset-wrapper',       ),     );   }   $form['submit'] = array(     '#type' => 'submit',     '#value' => t('Submit'),   );   // This simply allows us to demonstrate no-javascript use without   // actually turning off javascript in the browser. Removing the #ajax   // element turns off AJAX behaviors on that element and as a result   // ajax.js doesn't get loaded.   // For demonstration only! You don't need this.   if ($no_js_use) {     // Remove the #ajax from the above, so ajax.js won't be loaded.     if (!empty($form['names_fieldset']['remove_name']['#ajax'])) {       unset($form['names_fieldset']['remove_name']['#ajax']);     }     unset($form['names_fieldset']['add_name']['#ajax']);   }   return $form; } /**  * Callback for both ajax-enabled buttons.  *  * Selects and returns the fieldset with the names in it.  */ function ajax_example_add_more_callback($form, $form_state) {   return $form['names_fieldset']; } /**  * Submit handler for the "add-one-more" button.  *  * Increments the max counter and causes a rebuild.  */ function ajax_example_add_more_add_one($form, &$form_state) {   $form_state['num_names']++;   $form_state['num_changed'] = TRUE;   $form_state['rebuild'] = TRUE; } /**  * Submit handler for the "remove one" button.  *  * Decrements the max counter and causes a form rebuild.  */ function ajax_example_add_more_remove_one($form, &$form_state) {   if ($form_state['num_names'] > 1) {     $form_state['num_names']--;     $form_state['num_changed'] = TRUE;   }   $form_state['rebuild'] = TRUE; } /**  * Final submit handler.  *  * Reports what values were finally set.  */ function ajax_example_add_more_submit($form, &$form_state) {   $output = t('These people are coming to the picnic: @names',     array('@names' => implode(', ', $form_state['values']['names_fieldset']['name'])) );   drupal_set_message($output);     // Save the people to a variable.   variable_set('ajax_example_add_more_people', $form_state['values']['names_fieldset']['name']); } /**  * @} End of "defgroup ajax_degradation_example".  */ ?></pre></div>

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