问题
How would I print the results of a form submission on the same page as the form itself?
Relevant hook_menu:
$items['admin/content/ncbi_subsites/paths'] = array(
'title' => 'Paths',
'description' => 'Paths for a particular subsite',
'page callback' => 'ncbi_subsites_show_path_page',
'access arguments' => array( 'administer site configuration' ),
'type' => MENU_LOCAL_TASK,
);
page callback:
function ncbi_subsites_show_path_page() {
$f = drupal_get_form('_ncbi_subsites_show_paths_form');
return $f;
}
Form building function:
function _ncbi_subsites_show_paths_form() {
// bunch of code here
$form['subsite'] = array(
'#title' => t('Subsites'),
'#type' => 'select',
'#description' => 'Choose a subsite to get its paths',
'#default_value' => 'Choose a subsite',
'#options'=> $tmp,
);
$form['showthem'] = array(
'#type' => 'submit',
'#value' => 'Show paths',
'#submit' => array( 'ncbi_subsites_show_paths_submit'),
);
return $form;
}
Submit function (skipped validate function for brevity)
function ncbi_subsites_show_paths_submit( &$form, &$form_state ) {
//dpm ( $form_state );
$subsite_name = $form_state['values']['subsite'];
$subsite = new Subsite( $subsite_name ); //y own class that I use internally in this module
$paths = $subsite->normalized_paths;
// build list
$list = theme_item_list( $paths );
}
If I print that $list variable, it is exactly what I want, but I am not sure how to get it into the page with the original form page built from 'ncbi_subsites_show_path_page'. Any help is much appreciated!
回答1:
The key information in the link Nikit posted is $form_state['rebuild']. Here's some info from Drupal 7 documentation that I believe applies the same for Drupal 6...
$form_state['rebuild']: Normally, after the entire form processing is completed and submit handlers ran, a form is considered to be done and drupal_redirect_form() will redirect the user to a new page using a GET request (so a browser refresh does not re-submit the form). However, if 'rebuild' has been set to TRUE, then a new copy of the form is immediately built and sent to the browser; instead of a redirect. This is used for multi-step forms, such as wizards and confirmation forms. Also, if a form validation handler has set 'rebuild' to TRUE and a validation error occurred, then the form is rebuilt prior to being returned, enabling form elements to be altered, as appropriate to the particular validation error.
回答2:
This is a full working example of a page and a list on the same page
<?php
/*
* Implements hook_mennu()
*/
function test_menu() {
$items['test'] = array(
'title' => t('Test'),
'page callback' => 'test_search_page',
'access callback' => True,
);
return $items;
}
function test_search_page(){
$form = drupal_get_form('test_search_form');
return $form;
}
function test_search_form($form, &$form_state){
$header = array(t('id'), t('name'), t('firstname'));
$rows = Null;
$form['name'] = array(
'#type' => 'textfield',
'#title' => t('Name'),
'#required' => True,
'#default_value' => isset($_GET['name']) ? $_GET['name'] : Null
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('submit'),
);
if (isset($_GET['name'])){
$rows = get_data();
}
$form['table'] = array(
'#theme' => 'table',
'#header' => $header,
'#rows' => $rows,
'#empty' => t('Aucun résultat.')
);
$form['pager'] = array('#markup' => theme('pager'));
/*
if (isset($form_state['table'])) {
$form['table'] = $form_state['table'];
}
$form['pager'] = array('#markup' => theme('pager'));
*/
return $form;
}
function test_search_form_submit($form, &$form_state){
$form_state['redirect'] = array(
// $path
'test',
// $options
array('query' => array('name' => $form_state['values']['name'])),
// $http_response_code
302,
);
}
//$header = array(t('id'), t('name'), t('firstname'));
function get_data(){
$data = array(
0 => array(
'id' => '0',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
1 => array(
'id' => '1',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
2 => array(
'id' => '2',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
3 => array(
'id' => '3',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
4 => array(
'id' => '4',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
5 => array(
'id' => '5',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
6 => array(
'id' => '6',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
7 => array(
'id' => '7',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
8 => array(
'id' => '8',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
9 => array(
'id' => '9',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
10 => array(
'id' => '10',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
),
11 => array(
'id' => '11',
'name' => 'pokpokpok',
'firstname' => 'pokpokpok',
)
);
$paging = pager_array_splice($data, 2);
return $paging;
}
/*
$header = array(t('id'), t('name'), t('firstname'));
$form_state['table'] = array(
'#theme' => 'table',
'#header' => $header,
'#rows' => $paging,
'#empty' => t('Aucun r?sultat.')
);
$form_state['rebuild'] = True;*/
function pager_array_splice($data, $limit = 9, $element = 0) {
global $pager_page_array, $pager_total, $pager_total_items;
$page = isset($_GET['page']) ? $_GET['page'] : '';
// Convert comma-separated $page to an array, used by other functions.
$pager_page_array = explode(',', $page);
// We calculate the total of pages as ceil(items / limit).
$pager_total_items[$element] = count($data);
$pager_total[$element] = ceil($pager_total_items[$element] / $limit);
$pager_page_array[$element] = max(0, min((int)$pager_page_array[$element], ((int)$pager_total[$element]) - 1));
return array_slice($data, $pager_page_array[$element] * $limit, $limit, TRUE);
}
回答3:
Drupal6 node.module and dblog.module do this for admin/content/node and admin/reports/dblog by providing a page callback which includes the rendered form in its output.
modules/dblog/dblog.admin.inc
dblog_overview()
modules/node/node.admin.inc
node_admin_nodes()
In form submit, updated filter settings are stored in $_SESSION.
In the page callback it renders the results based on the filter settings stored in $_SESSION.
$_SESSION is just another global here (albeit a persistent one).
回答4:
For Drupal7 I find that if you use $form_state['rebuild'], then the form variables can be best accessed from the PHP super-global variable $_POST (or $_REQUEST). However, if you use $form_state['redirect'], the solution with $_SESSION is better (instead of using $_GET or $_REQUEST).
I find this issue quite tricky even for experts. Maybe Drupal has some more easy and intuitive way that we don't know.
来源：https://stackoverflow.com/questions/2733306/drupal-how-to-render-results-of-form-on-same-page-as-form