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The bane of multistep node forms are validation errors. But Drupal 7 has a cure. Not nice but a cure.
Slap #access = FALSE on form elements you dont want to see in the current step and then set up the Next button with #limit_validation_errors set to the elements you are about to see. The Prev button should get an empty #limit_validation_errors. Should field validation errors bother you, you can nuke those in hook_field_attach_validate.
<?php
define('MYMODULE_STORY_NODE_FORM_LAST_STEP', 2);
function mymodule_form_story_node_form_alter(&$form, $form_state) {
$step = isset($form_state['storage']['step']) ? $form_state['storage']['step'] : 1;
if ($step > 1) {
$form['actions']['previous'] = array(
'#type' => 'submit',
'#value' => t('Previous'),
'#submit' => array('mymodule_node_form_previous', 'node_form_submit_build_node'),
// -1 so that it appears before the "Next" button added later.
'#weight' => -1,
'#limit_validation_errors' => array(),
);
}
if ($step < MYMODULE_STORY_NODE_FORM_LAST_STEP) {
$form['actions']['next'] = array(
'#type' => 'submit',
'#value' => t('Next'),
'#submit' => array('mymodule_node_form_next', 'node_form_submit_build_node'),
);
}
$steps = mymodule_node_form_by_step();
foreach ($steps as $key => $step_current) {
if ($step_current == $step) {
if (isset($form['actions']['next'])) {
$form['actions']['next']['#limit_validation_errors'][] = array($key);
}
}
else {
$form[$key]['#access'] = FALSE;
}
}
}
function mymodule_node_form_by_step() {
static $steps = array(
// -1 means never show.
'author' => -1,
'revision_information' => -1,
'title' => 1,
'body' => 2,
);
return $steps;
}
function mymodule_node_form_next($form, &$form_state) {
if (!isset($form_state['storage']['step'])) {
$form_state['storage']['step'] = 1;
}
if ($form_state['storage']['step'] == MYMODULE_STORY_NODE_FORM_LAST_STEP) {
$form_state['rebuild'] = FALSE;
}
else {
$form_state['rebuild'] = TRUE;
$form_state['storage']['step']++;
}
}
function mymodule_node_form_previous($form, &$form_state) {
$form_state['rebuild'] = TRUE;
$form_state['storage']['step']--;
unset($form_state['node_preview']);
}
function mymodule_field_attach_validate($obj_type, $object, &$errors) {
if (arg(0) == 'node' && (arg(1) == 'add' || arg(2) == 'edit')) {
// foo and bar fields are handled elsewhere so nuke their errors.
unset($errors['foo'], $errors['bar']);
}
}
?>
And if you are really stupid, you'll delete this message, rather than publish it.
i agree more than ever....
Downloads
Drupal 7 has the remedies against the validation error which occur due to the bane of multistage node. The step described above are the easy step for avoiding the error which will help a lot.The node forms will help in mitigating such type of validation error.Leadership Speaker professional.
Thank you very much for modifying the PHP and it will help those are using the PHP.On the other hand this is not the appropriate but little bit different.Most important is that the 7 steps for avoiding the validation error.
interested in demand of home daycares
Drupal 7 multistep node limits the validation error by using the format on form element. It only provides the cure to validation error not replace it. To check the limit of validation error i think this going to be the best for now and the proper use of script will hep a lot.
Lewis - t1 internet los angeles professional.
Drupal 7 cure the multistep node forms from validation errors but it not replacing it, but I think Drupal 7 has somehow modify the PHP which can be improve later so that the cure can be the complete solution for the PHP. But till then Drupal 7 has to solve our problem.
Shaun - Blogs about Cosyfoot
Now the validation error is going to be check by the Drupal if the script written above is properly used. By setting up the next button and leaving empty the preview button validation error can be check.There may be the requirement of abundant memory.
Sisk - small business debt pro.
Really, Drupal gives you good opportunities for creating a community site. Some of the modules that Wordpress and Joomla do not contain, are really much helpful.
Great example of using the default node form structure to do multistep!
I'm trying to work out if it can be AJAX-ed so that only the form is loaded with each step rather than the entire page? Might this be possible or do I need to build such a form outside of the core node form?
Rick :)
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