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<?php
/**
* @file
* Page callbacks for adding, editing, deleting, and revisions management for content.
*/
/**
* Menu callback; presents the node editing form.
*/
function node_page_edit($node) {
$type_name = node_type_get_name($node);
drupal_set_title(t('<em>Edit @type</em> @title', array('@type' => $type_name, '@title' => $node->title)), PASS_THROUGH);
return drupal_get_form($node->type . '_node_form', $node);
}
/**
* Page callback: Displays add content links for available content types.
*
* Redirects to node/add/[type] if only one content type is available.
*
* @see node_menu()
*/
function node_add_page() {
$item = menu_get_item();
$content = system_admin_menu_block($item);
// Bypass the node/add listing if only one content type is available.
if (count($content) == 1) {
$item = array_shift($content);
drupal_goto($item['href']);
}
return theme('node_add_list', array('content' => $content));
}
/**
* Returns HTML for a list of available node types for node creation.
*
* @param $variables
* An associative array containing:
* - content: An array of content types.
*
* @ingroup themeable
*/
function theme_node_add_list($variables) {
$content = $variables['content'];
$output = '';
if ($content) {
$output = '<dl class="node-type-list">';
foreach ($content as $item) {
$output .= '<dt>' . l($item['title'], $item['href'], $item['localized_options']) . '</dt>';
$output .= '<dd>' . filter_xss_admin($item['description']) . '</dd>';
}
$output .= '</dl>';
}
else {
$output = '<p>' . t('You have not created any content types yet. Go to the <a href="@create-content">content type creation page</a> to add a new content type.', array('@create-content' => url('admin/structure/types/add'))) . '</p>';
}
return $output;
}
/**
* Returns a node submission form.
*
* @param $type
* The node type for the submitted node.
*
* @return
* The themed form.
*/
function node_add($type) {
global $user;
$types = node_type_get_types();
$node = (object) array('uid' => $user->uid, 'name' => (isset($user->name) ? $user->name : ''), 'type' => $type, 'language' => LANGUAGE_NONE);
drupal_set_title(t('Create @name', array('@name' => $types[$type]->name)), PASS_THROUGH);
$output = drupal_get_form($type . '_node_form', $node);
return $output;
}
/**
* Form validation handler for node_form().
*
* @see node_form()
* @see node_form_submit()
*/
function node_form_validate($form, &$form_state) {
// $form_state['node'] contains the actual entity being edited, but we must
// not update it with form values that have not yet been validated, so we
// create a pseudo-entity to use during validation.
$node = (object) $form_state['values'];
node_validate($node, $form, $form_state);
entity_form_field_validate('node', $form, $form_state);
}
/**
* Form constructor for the node add/edit form.
*
* @see node_form_validate()
* @see node_form_submit()
* @see node_form_build_preview()
* @see node_form_delete_submit()
* @ingroup forms
*/
function node_form($form, &$form_state, $node) {
global $user;
// During initial form build, add the node entity to the form state for use
// during form building and processing. During a rebuild, use what is in the
// form state.
if (!isset($form_state['node'])) {
if (!isset($node->title)) {
$node->title = NULL;
}
node_object_prepare($node);
$form_state['node'] = $node;
}
else {
$node = $form_state['node'];
}
// Some special stuff when previewing a node.
if (isset($form_state['node_preview'])) {
$form['#prefix'] = $form_state['node_preview'];
$node->in_preview = TRUE;
}
else {
unset($node->in_preview);
}
// Identify this as a node edit form.
// @todo D8: Remove. Modules can implement hook_form_BASE_FORM_ID_alter() now.
$form['#node_edit_form'] = TRUE;
$form['#attributes']['class'][] = 'node-form';
if (!empty($node->type)) {
$form['#attributes']['class'][] = 'node-' . $node->type . '-form';
}
// Basic node information.
// These elements are just values so they are not even sent to the client.
foreach (array('nid', 'vid', 'uid', 'created', 'type', 'language') as $key) {
$form[$key] = array(
'#type' => 'value',
'#value' => isset($node->$key) ? $node->$key : NULL,
);
}
// Changed must be sent to the client, for later overwrite error checking.
$form['changed'] = array(
'#type' => 'hidden',
'#default_value' => isset($node->changed) ? $node->changed : NULL,
);
// Invoke hook_form() to get the node-specific bits. Can't use node_invoke(),
// because hook_form() needs to be able to receive $form_state by reference.
// @todo hook_form() implementations are unable to add #validate or #submit
// handlers to the form buttons below. Remove hook_form() entirely.
$function = node_type_get_base($node) . '_form';
if (function_exists($function) && ($extra = $function($node, $form_state))) {
$form = array_merge_recursive($form, $extra);
}
// If the node type has a title, and the node type form defined no special
// weight for it, we default to a weight of -5 for consistency.
if (isset($form['title']) && !isset($form['title']['#weight'])) {
$form['title']['#weight'] = -5;
}
// @todo D8: Remove. Modules should access the node using $form_state['node'].
$form['#node'] = $node;
$form['additional_settings'] = array(
'#type' => 'vertical_tabs',
'#weight' => 99,
);
// Add a log field if the "Create new revision" option is checked, or if the
// current user has the ability to check that option.
$form['revision_information'] = array(
'#type' => 'fieldset',
'#title' => t('Revision information'),
'#collapsible' => TRUE,
// Collapsed by default when "Create new revision" is unchecked
'#collapsed' => !$node->revision,
'#group' => 'additional_settings',
'#attributes' => array(
'class' => array('node-form-revision-information'),
),
'#attached' => array(
'js' => array(drupal_get_path('module', 'node') . '/node.js'),
),
'#weight' => 20,
'#access' => $node->revision || user_access('administer nodes'),
);
$form['revision_information']['revision'] = array(
'#type' => 'checkbox',
'#title' => t('Create new revision'),
'#default_value' => $node->revision,
'#access' => user_access('administer nodes'),
);
// Check the revision log checkbox when the log textarea is filled in.
// This must not happen if "Create new revision" is enabled by default, since
// the state would auto-disable the checkbox otherwise.
if (!$node->revision) {
$form['revision_information']['revision']['#states'] = array(
'checked' => array(
'textarea[name="log"]' => array('empty' => FALSE),
),
);
}
$form['revision_information']['log'] = array(
'#type' => 'textarea',
'#title' => t('Revision log message'),
'#rows' => 4,
'#default_value' => !empty($node->log) ? $node->log : '',
'#description' => t('Provide an explanation of the changes you are making. This will help other authors understand your motivations.'),
);
// Node author information for administrators
$form['author'] = array(
'#type' => 'fieldset',
'#access' => user_access('administer nodes'),
'#title' => t('Authoring information'),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
'#group' => 'additional_settings',
'#attributes' => array(
'class' => array('node-form-author'),
),
'#attached' => array(
'js' => array(
drupal_get_path('module', 'node') . '/node.js',
array(
'type' => 'setting',
'data' => array('anonymous' => variable_get('anonymous', t('Anonymous'))),
),
),
),
'#weight' => 90,
);
$form['author']['name'] = array(
'#type' => 'textfield',
'#title' => t('Authored by'),
'#maxlength' => 60,
'#autocomplete_path' => 'user/autocomplete',
'#default_value' => !empty($node->name) ? $node->name : '',
'#weight' => -1,
'#description' => t('Leave blank for %anonymous.', array('%anonymous' => variable_get('anonymous', t('Anonymous')))),
);
$form['author']['date'] = array(
'#type' => 'textfield',
'#title' => t('Authored on'),
'#maxlength' => 25,
'#description' => t('Format: %time. The date format is YYYY-MM-DD and %timezone is the time zone offset from UTC. Leave blank to use the time of form submission.', array('%time' => !empty($node->date) ? date_format(date_create($node->date), 'Y-m-d H:i:s O') : format_date($node->created, 'custom', 'Y-m-d H:i:s O'), '%timezone' => !empty($node->date) ? date_format(date_create($node->date), 'O') : format_date($node->created, 'custom', 'O'))),
'#default_value' => !empty($node->date) ? $node->date : '',
);
// Node options for administrators
$form['options'] = array(
'#type' => 'fieldset',
'#access' => user_access('administer nodes'),
'#title' => t('Publishing options'),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
'#group' => 'additional_settings',
'#attributes' => array(
'class' => array('node-form-options'),
),
'#attached' => array(
'js' => array(drupal_get_path('module', 'node') . '/node.js'),
),
'#weight' => 95,
);
$form['options']['status'] = array(
'#type' => 'checkbox',
'#title' => t('Published'),
'#default_value' => $node->status,
);
$form['options']['promote'] = array(
'#type' => 'checkbox',
'#title' => t('Promoted to front page'),
'#default_value' => $node->promote,
);
$form['options']['sticky'] = array(
'#type' => 'checkbox',
'#title' => t('Sticky at top of lists'),
'#default_value' => $node->sticky,
);
// Add the buttons.
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array(
'#type' => 'submit',
'#access' => variable_get('node_preview_' . $node->type, DRUPAL_OPTIONAL) != DRUPAL_REQUIRED || (!form_get_errors() && isset($form_state['node_preview'])),
'#value' => t('Save'),
'#weight' => 5,
'#submit' => array('node_form_submit'),
);
$form['actions']['preview'] = array(
'#access' => variable_get('node_preview_' . $node->type, DRUPAL_OPTIONAL) != DRUPAL_DISABLED,
'#type' => 'submit',
'#value' => t('Preview'),
'#weight' => 10,
'#submit' => array('node_form_build_preview'),
);
if (!empty($node->nid) && node_access('delete', $node)) {
$form['actions']['delete'] = array(
'#type' => 'submit',
'#value' => t('Delete'),
'#weight' => 15,
'#submit' => array('node_form_delete_submit'),
);
}
// This form uses a button-level #submit handler for the form's main submit
// action. node_form_submit() manually invokes all form-level #submit handlers
// of the form. Without explicitly setting #submit, Form API would auto-detect
// node_form_submit() as submit handler, but that is the button-level #submit
// handler for the 'Save' action. To maintain backwards compatibility, a
// #submit handler is auto-suggested for custom node type modules.
$form['#validate'][] = 'node_form_validate';
if (!isset($form['#submit']) && function_exists($node->type . '_node_form_submit')) {
$form['#submit'][] = $node->type . '_node_form_submit';
}
$form += array('#submit' => array());
field_attach_form('node', $node, $form, $form_state, entity_language('node', $node));
return $form;
}
/**
* Form submission handler for node_form().
*
* Handles the 'Delete' button on the node form.
*
* @see node_form()
* @see node_form_validate()
*/
function node_form_delete_submit($form, &$form_state) {
$destination = array();
if (isset($_GET['destination'])) {
$destination = drupal_get_destination();
unset($_GET['destination']);
}
$node = $form['#node'];
$form_state['redirect'] = array('node/' . $node->nid . '/delete', array('query' => $destination));
}
/**
* Form submission handler for node_form().
*
* Handles the 'Preview' button on the node form.
*
* @see node_form()
* @see node_form_validate()
*/
function node_form_build_preview($form, &$form_state) {
$node = node_form_submit_build_node($form, $form_state);
$form_state['node_preview'] = node_preview($node);
$form_state['rebuild'] = TRUE;
}
/**
* Generates a node preview.
*
* @param $node
* The node to preview.
*
* @return
* An HTML-formatted string of a node preview.
*
* @see node_form_build_preview()
*/
function node_preview($node) {
// Clone the node before previewing it to prevent the node itself from being
// modified.
$cloned_node = clone $node;
if (node_access('create', $cloned_node) || node_access('update', $cloned_node)) {
_field_invoke_multiple('load', 'node', array($cloned_node->nid => $cloned_node));
// Load the user's name when needed.
if (isset($cloned_node->name)) {
// The use of isset() is mandatory in the context of user IDs, because
// user ID 0 denotes the anonymous user.
if ($user = user_load_by_name($cloned_node->name)) {
$cloned_node->uid = $user->uid;
$cloned_node->picture = $user->picture;
}
else {
$cloned_node->uid = 0; // anonymous user
}
}
elseif ($cloned_node->uid) {
$user = user_load($cloned_node->uid);
$cloned_node->name = $user->name;
$cloned_node->picture = $user->picture;
}
$cloned_node->changed = REQUEST_TIME;
$nodes = array($cloned_node->nid => $cloned_node);
field_attach_prepare_view('node', $nodes, 'full');
// Display a preview of the node.
if (!form_get_errors()) {
$cloned_node->in_preview = TRUE;
$output = theme('node_preview', array('node' => $cloned_node));
unset($cloned_node->in_preview);
}
drupal_set_title(t('Preview'), PASS_THROUGH);
return $output;
}
}
/**
* Returns HTML for a node preview for display during node creation and editing.
*
* @param $variables
* An associative array containing:
* - node: The node object which is being previewed.
*
* @see node_preview()
* @ingroup themeable
*/
function theme_node_preview($variables) {
$node = $variables['node'];
$output = '<div class="preview">';
$preview_trimmed_version = FALSE;
$elements = node_view(clone $node, 'teaser');
$trimmed = drupal_render($elements);
$elements = node_view($node, 'full');
$full = drupal_render($elements);
// Do we need to preview trimmed version of post as well as full version?
if ($trimmed != $full) {
drupal_set_message(t('The trimmed version of your post shows what your post looks like when promoted to the main page or when exported for syndication.<span class="no-js"> You can insert the delimiter "<!--break-->" (without the quotes) to fine-tune where your post gets split.</span>'));
$output .= '<h3>' . t('Preview trimmed version') . '</h3>';
$output .= $trimmed;
$output .= '<h3>' . t('Preview full version') . '</h3>';
$output .= $full;
}
else {
$output .= $full;
}
$output .= "</div>\n";
return $output;
}
/**
* Form submission handler for node_form().
*
* @see node_form()
* @see node_form_validate()
*/
function node_form_submit($form, &$form_state) {
$node = node_form_submit_build_node($form, $form_state);
$insert = empty($node->nid);
node_save($node);
$node_link = l(t('view'), 'node/' . $node->nid);
$watchdog_args = array('@type' => $node->type, '%title' => $node->title);
$t_args = array('@type' => node_type_get_name($node), '%title' => $node->title);
if ($insert) {
watchdog('content', '@type: added %title.', $watchdog_args, WATCHDOG_NOTICE, $node_link);
drupal_set_message(t('@type %title has been created.', $t_args));
}
else {
watchdog('content', '@type: updated %title.', $watchdog_args, WATCHDOG_NOTICE, $node_link);
drupal_set_message(t('@type %title has been updated.', $t_args));
}
if ($node->nid) {
$form_state['values']['nid'] = $node->nid;
$form_state['nid'] = $node->nid;
$form_state['redirect'] = node_access('view', $node) ? 'node/' . $node->nid : '<front>';
}
else {
// In the unlikely case something went wrong on save, the node will be
// rebuilt and node form redisplayed the same way as in preview.
drupal_set_message(t('The post could not be saved.'), 'error');
$form_state['rebuild'] = TRUE;
}
// Clear the page and block caches.
cache_clear_all();
}
/**
* Updates the form state's node entity by processing this submission's values.
*
* This is the default builder function for the node form. It is called
* during the "Save" and "Preview" submit handlers to retrieve the entity to
* save or preview. This function can also be called by a "Next" button of a
* wizard to update the form state's entity with the current step's values
* before proceeding to the next step.
*
* @see node_form()
*/
function node_form_submit_build_node($form, &$form_state) {
// @todo Legacy support for modules that extend the node form with form-level
// submit handlers that adjust $form_state['values'] prior to those values
// being used to update the entity. Module authors are encouraged to instead
// adjust the node directly within a hook_node_submit() implementation. For
// Drupal 8, evaluate whether the pattern of triggering form-level submit
// handlers during button-level submit processing is worth supporting
// properly, and if so, add a Form API function for doing so.
unset($form_state['submit_handlers']);
form_execute_handlers('submit', $form, $form_state);
$node = $form_state['node'];
entity_form_submit_build_entity('node', $node, $form, $form_state);
node_submit($node);
foreach (module_implements('node_submit') as $module) {
$function = $module . '_node_submit';
$function($node, $form, $form_state);
}
return $node;
}
/**
* Form constructor for the node deletion confirmation form.
*
* @see node_delete_confirm_submit()
*/
function node_delete_confirm($form, &$form_state, $node) {
$form['#node'] = $node;
// Always provide entity id in the same form key as in the entity edit form.
$form['nid'] = array('#type' => 'value', '#value' => $node->nid);
return confirm_form($form,
t('Are you sure you want to delete %title?', array('%title' => $node->title)),
'node/' . $node->nid,
t('This action cannot be undone.'),
t('Delete'),
t('Cancel')
);
}
/**
* Executes node deletion.
*
* @see node_delete_confirm()
*/
function node_delete_confirm_submit($form, &$form_state) {
if ($form_state['values']['confirm']) {
$node = node_load($form_state['values']['nid']);
node_delete($form_state['values']['nid']);
cache_clear_all();
watchdog('content', '@type: deleted %title.', array('@type' => $node->type, '%title' => $node->title));
drupal_set_message(t('@type %title has been deleted.', array('@type' => node_type_get_name($node), '%title' => $node->title)));
}
$form_state['redirect'] = '<front>';
}
/**
* Generates an overview table of older revisions of a node.
*
* @param $node
* A node object.
*
* @return array
* An array as expected by drupal_render().
*
* @see node_menu()
*/
function node_revision_overview($node) {
drupal_set_title(t('Revisions for %title', array('%title' => $node->title)), PASS_THROUGH);
$header = array(t('Revision'), array('data' => t('Operations'), 'colspan' => 2));
$revisions = node_revision_list($node);
$rows = array();
$revert_permission = FALSE;
if ((user_access('revert revisions') || user_access('administer nodes')) && node_access('update', $node)) {
$revert_permission = TRUE;
}
$delete_permission = FALSE;
if ((user_access('delete revisions') || user_access('administer nodes')) && node_access('delete', $node)) {
$delete_permission = TRUE;
}
foreach ($revisions as $revision) {
$row = array();
$operations = array();
if ($revision->current_vid > 0) {
$row[] = array('data' => t('!date by !username', array('!date' => l(format_date($revision->timestamp, 'short'), "node/$node->nid"), '!username' => theme('username', array('account' => $revision))))
. (($revision->log != '') ? '<p class="revision-log">' . filter_xss($revision->log) . '</p>' : ''),
'class' => array('revision-current'));
$operations[] = array('data' => drupal_placeholder(t('current revision')), 'class' => array('revision-current'), 'colspan' => 2);
}
else {
$row[] = t('!date by !username', array('!date' => l(format_date($revision->timestamp, 'short'), "node/$node->nid/revisions/$revision->vid/view"), '!username' => theme('username', array('account' => $revision))))
. (($revision->log != '') ? '<p class="revision-log">' . filter_xss($revision->log) . '</p>' : '');
if ($revert_permission) {
$operations[] = l(t('revert'), "node/$node->nid/revisions/$revision->vid/revert");
}
if ($delete_permission) {
$operations[] = l(t('delete'), "node/$node->nid/revisions/$revision->vid/delete");
}
}
$rows[] = array_merge($row, $operations);
}
$build['node_revisions_table'] = array(
'#theme' => 'table',
'#rows' => $rows,
'#header' => $header,
);
return $build;
}
/**
* Asks for confirmation of the reversion to prevent against CSRF attacks.
*
* @param int $node_revision
* The node revision ID.
*
* @return array
* An array as expected by drupal_render().
*
* @see node_menu()
* @see node_revision_revert_confirm_submit()
* @ingroup forms
*/
function node_revision_revert_confirm($form, $form_state, $node_revision) {
$form['#node_revision'] = $node_revision;
return confirm_form($form, t('Are you sure you want to revert to the revision from %revision-date?', array('%revision-date' => format_date($node_revision->revision_timestamp))), 'node/' . $node_revision->nid . '/revisions', '', t('Revert'), t('Cancel'));
}
/**
* Form submission handler for node_revision_revert_confirm().
*/
function node_revision_revert_confirm_submit($form, &$form_state) {
$node_revision = $form['#node_revision'];
$node_revision->revision = 1;
$node_revision->log = t('Copy of the revision from %date.', array('%date' => format_date($node_revision->revision_timestamp)));
node_save($node_revision);
watchdog('content', '@type: reverted %title revision %revision.', array('@type' => $node_revision->type, '%title' => $node_revision->title, '%revision' => $node_revision->vid));
drupal_set_message(t('@type %title has been reverted back to the revision from %revision-date.', array('@type' => node_type_get_name($node_revision), '%title' => $node_revision->title, '%revision-date' => format_date($node_revision->revision_timestamp))));
$form_state['redirect'] = 'node/' . $node_revision->nid . '/revisions';
}
/**
* Form constructor for the revision deletion confirmation form.
*
* This form prevents against CSRF attacks.
*
* @param $node_revision
* The node revision ID.
*
* @return
* An array as expected by drupal_render().
*
* @see node_menu()
* @see node_revision_delete_confirm_submit()
* @ingroup forms
*/
function node_revision_delete_confirm($form, $form_state, $node_revision) {
$form['#node_revision'] = $node_revision;
return confirm_form($form, t('Are you sure you want to delete the revision from %revision-date?', array('%revision-date' => format_date($node_revision->revision_timestamp))), 'node/' . $node_revision->nid . '/revisions', t('This action cannot be undone.'), t('Delete'), t('Cancel'));
}
/**
* Form submission handler for node_revision_delete_confirm().
*/
function node_revision_delete_confirm_submit($form, &$form_state) {
$node_revision = $form['#node_revision'];
node_revision_delete($node_revision->vid);
watchdog('content', '@type: deleted %title revision %revision.', array('@type' => $node_revision->type, '%title' => $node_revision->title, '%revision' => $node_revision->vid));
drupal_set_message(t('Revision from %revision-date of @type %title has been deleted.', array('%revision-date' => format_date($node_revision->revision_timestamp), '@type' => node_type_get_name($node_revision), '%title' => $node_revision->title)));
$form_state['redirect'] = 'node/' . $node_revision->nid;
if (db_query('SELECT COUNT(vid) FROM {node_revision} WHERE nid = :nid', array(':nid' => $node_revision->nid))->fetchField() > 1) {
$form_state['redirect'] .= '/revisions';
}
}