PHP url::back方法代码示例

 /**
  * Set page width
  *
  * @param  string  $width
  */
 public function width($width)
 {
     $this->session->set('page_width', $width == 'wide' ? 'liquid' : 'fixed');
     if (request::is_ajax()) {
         return;
     }
     url::back();
 }

 /**
  * Page constructor to enable role check
  */
 public function __construct()
 {
     parent::__construct();
     // Allow only admin access
     if (!$this->visitor->logged_in('admin')) {
         url::back();
     }
     $this->breadcrumb[] = html::anchor('roles', __('Roles'));
 }

 /**
  * Edit topic
  *
  * @param  mixed  $topic_id
  * @param  mixed  $area_id
  */
 public function _topic_edit($topic_id, $area_id = false)
 {
     $this->history = false;
     $errors = array();
     $forum_topic = new Forum_Topic_Model((int) $topic_id);
     $forum_area = $forum_topic->loaded() ? $forum_topic->forum_area : new Forum_Area_Model((int) $area_id);
     if ($forum_topic->loaded()) {
         // Editing topic
         $editing = true;
         if (!$forum_topic->has_access(Forum_Topic_Model::ACCESS_EDIT)) {
             url::back('forum');
         }
     } else {
         if ($forum_area->loaded()) {
             // New topic
             $editing = false;
             if (!$forum_area->has_access(Forum_Area_Model::ACCESS_WRITE)) {
                 url::back('forum');
             }
         } else {
             // New topic in unknown area
             $errors[] = __('Area :area or topic :topic not found', array(':area' => (int) $area_id, ':topic' => (int) $topic_id));
         }
     }
     if (empty($errors)) {
         $forum_post = new Forum_Post_Model((int) $forum_topic->first_post_id);
         $form_errors = array();
         $form_values_topic = $forum_topic->as_array();
         $form_values_post = $forum_post->as_array();
         $form_topics = false;
         // Bound area?
         if ($forum_area->is_type(Forum_Area_Model::TYPE_BIND)) {
             // Get bind config and load topics
             $bind = Forum_Area_Model::binds($forum_area->bind);
             if ($editing) {
                 // Can't edit bound topic
                 $form_topics = array($forum_topic->bind_id => $forum_topic->name);
             } else {
                 // Try to load options from configured model
                 try {
                     $bind_topics = ORM::factory($bind['model'])->find_bind_topics($forum_area->bind);
                     $form_topics = array(0 => __('Choose..')) + $bind_topics;
                 } catch (Kohana_Exception $e) {
                     $form_topics = array();
                 }
             }
         }
         // Admin actions
         if ($editing && $forum_topic->has_access(Forum_Topic_Model::ACCESS_DELETE)) {
             $this->page_actions[] = array('link' => url::model($forum_topic) . '/delete/?token=' . csrf::token(), 'text' => __('Delete topic'), 'class' => 'topic-delete');
         }
         // Check post
         if ($post = $this->input->post()) {
             $post['forum_area_id'] = $forum_area->id;
             $topic = $post;
             if (isset($bind_topics)) {
                 $topic['name'] = arr::get($bind_topics, (int) $topic['bind_id'], '');
             }
             $post_extra = $topic_extra = array('author_id' => $this->user->id, 'author_name' => $this->user->username);
             if ($editing) {
                 $post_extra['modifies'] = (int) $forum_post->modifies + 1;
                 $post_extra['modified'] = date::unix2sql(time());
             }
             $post_extra['author_ip'] = $this->input->ip_address();
             $post_extra['author_host'] = $this->input->host_name();
             // validate post first and save topic if ok
             if (csrf::valid() && $forum_post->validate($post, false, $post_extra) && $forum_topic->validate($topic, true, $topic_extra)) {
                 // post
                 $forum_post->forum_topic_id = $forum_topic->id;
                 $forum_post->save();
                 if (!$editing) {
                     // topic
                     $forum_topic->first_post_id = $forum_post->id;
                     $forum_topic->last_post_id = $forum_post->id;
                     $forum_topic->last_poster = $this->user->username;
                     $forum_topic->last_posted = date::unix2sql(time());
                     $forum_topic->posts = 1;
                     $forum_topic->save();
                     // area
                     $forum_area->last_topic_id = $forum_topic->id;
                     $forum_area->posts += 1;
                     $forum_area->topics += 1;
                     $forum_area->save();
                     // user
                     $this->user->posts += 1;
                     $this->user->save();
                     // News feed
                     newsfeeditem_forum::topic($this->user, $forum_topic);
                 }
                 // redirect back to topic
                 URL::redirect(url::model($forum_topic));
             } else {
                 $form_errors = array_merge($post->errors(), is_object($topic) ? $topic->errors() : array());
             }
//.........这里部分代码省略.........

 /**
  * Remove from friendlist
  */
 public function _frienddelete()
 {
     $this->history = false;
     // for authenticated only
     if ($this->user && csrf::valid()) {
         // require valid user
         $this->member = new User_Model($username);
         if ($this->member->id) {
             $this->user->delete_friend($this->member);
         }
     }
     url::back('members');
 }

 /**
  * Delete entry
  *
  * @param  integer|string  $entry_id
  */
 public function _entry_delete($entry_id)
 {
     $this->history = false;
     $entry = new Blog_Entry_Model((int) $entry_id);
     if ($this->user && $entry->id && csrf::valid($this->input->get('token'), $this->user->id) && ($entry->is_author() || $this->visitor->logged_in('admin'))) {
         $entry->delete();
         url::redirect('/blogs');
     }
     url::back('/blogs');
 }

 /**
  * Remove from favorites
  *
  * @param  int|string  $event_id
  */
 public function _favorite_delete($event_id)
 {
     $this->history = false;
     // for authenticated only
     if ($this->user && csrf::valid()) {
         // require valid user
         $this->event = new Event_Model((int) $event_id);
         if ($this->event->id) {
             $this->event->delete_favorite($this->user);
         }
     }
     url::back('/members');
 }

		<?php 
echo form::textarea_wrap(array('name' => 'post', 'id' => $post_id, 'rows' => 20, 'cols' => 25), $post, '', true, '', $errors);
?>

	</ul>
</fieldset>

<fieldset>
	<?php 
echo form::csrf();
?>
	<?php 
echo empty($post['id']) ? '' : form::hidden('id', $post['id']);
?>
	<?php 
echo empty($parent_id) ? '' : form::hidden('parent_id', $parent_id);
?>
	<?php 
echo form::submit(false, __('Save'));
?>
	<?php 
echo html::anchor(request::is_ajax() ? 'forum/post/' . ($post['id'] ? $post['id'] : $parent_id) : url::back('/forum', true), __('Cancel'));
?>
</fieldset>

<?php 
echo form::close();
?>

<?php 
echo html::script_source('$(function() { $("#' . $post_id . '").markItUp(bbCodeSettings); });');

}
?>

		<?php 
echo form::textarea_wrap(array('name' => 'post', 'id' => 'post', 'rows' => 20, 'cols' => 25), $topic, '', true, __('Post'), $errors);
?>

	</ul>
</fieldset>

<fieldset>
	<?php 
echo form::csrf();
?>
	<?php 
echo empty($topic['id']) ? '' : form::hidden('id', $topic['id']);
?>
	<?php 
echo form::submit(false, __('Save'));
?>
	<?php 
echo html::anchor(url::back('/forum', true), __('Cancel'));
?>
</fieldset>

<?php 
echo form::close();
?>

<?php 
echo html::script_source('$(function() { $("#post").markItUp(bbCodeSettings); });');

 /**
  * Edit venue
  *
  * @param  integer|string  $venue_id
  * @param  integer|string  $category_id
  */
 public function _venue_edit($venue_id = false, $category_id = false)
 {
     $this->history = false;
     $venue = new Venue_Model((int) $venue_id);
     // Check access
     if (!($venue->loaded() && $venue->has_access(Venue_Model::ACCESS_EDIT)) && !(!$venue->loaded() && $this->visitor->logged_in(array('admin', 'venue moderator', 'venue')))) {
         url::back('venues');
     }
     $errors = $form_errors = array();
     $form_values = $venue->as_array();
     // check post
     if (request::method() == 'post') {
         $post = array_merge($this->input->post(), $_FILES);
         $extra = array('author_id' => $this->user->id);
         // got address, get geocode
         if (!empty($post['address']) && !empty($post['city_name'])) {
             list($extra['latitude'], $extra['longitude']) = Gmap::address_to_ll(implode(', ', array($post['address'], $post['zip'], $post['city_name'])));
         }
         if (csrf::valid() && $venue->validate($post, true, $extra)) {
             // handle logo upload
             if (isset($post->logo) && empty($post->logo['error'])) {
                 $logo = Image_Model::factory('venues.logo', $post->logo, $this->user->id);
                 if ($logo->id) {
                     $venue->add($logo);
                     $venue->default_image_id = $logo->id;
                     $venue->save();
                 }
             }
             // handle picture uploads
             foreach (array($post->picture1, $post->picture2) as $picture) {
                 if (isset($picture) && empty($picture['error'])) {
                     $image = Image_Model::factory('venues.image', $picture, $this->user->id);
                     if ($image->id) {
                         $venue->add($image);
                         $venue->save();
                     }
                 }
             }
             // update tags
             $venue->remove(ORM::factory('tag'));
             if (!empty($post->tags)) {
                 foreach ($post->tags as $tag_id => $tag) {
                     $venue->add(ORM::factory('tag', $tag_id));
                 }
             }
             url::redirect(url::model($venue));
         } else {
             $form_errors = $post->errors();
         }
         $form_values = arr::overwrite($form_values, $post->as_array());
     }
     // editing old?
     if ($venue_id) {
         if ($venue->has_access(Venue_Model::ACCESS_DELETE)) {
             $this->page_actions[] = array('link' => 'venue/' . url::title($venue->id, $venue->name) . '/delete/?token=' . csrf::token(), 'text' => __('Delete venue'), 'class' => 'venue-delete');
         }
         $this->page_subtitle = __('Edit venue');
         if (!$venue->id) {
             $errors = array('venues.error_venue_not_found');
         } else {
             $venue_category = $venue->venue_category;
         }
     } else {
         $this->page_subtitle = __('Add venue');
         if ($category_id) {
             $venue_category = new Venue_Category_Model((int) $category_id);
             if ($venue_category->id) {
                 $form_values['venue_category_id'] = $venue_category->id;
             } else {
                 $errors = array('venues.error_venue_category_not_found');
             }
         }
     }
     $this->page_actions[] = array('link' => 'venue/' . url::title($venue->id, $venue->name), 'text' => __('Cancel'), 'class' => 'cancel');
     $this->breadcrumb[] = html::anchor('/venues/' . url::title($venue_category->id, $venue_category->name), $venue_category->name);
     if ($venue->id) {
         $this->breadcrumb[] = html::anchor('/venue/' . url::title($venue->id, $venue->name), $venue->name);
     }
     // show form
     if (empty($errors)) {
         $form = array();
         // tags
         if ($venue_category->tag_group_id) {
             $form['tags'] = $form_values['tags'] = array();
             foreach ($venue_category->tag_group->tags as $tag) {
                 $form['tags'][$tag->id] = $tag->name;
                 if ($venue->has($tag)) {
                     $form_values['tags'][$tag->id] = $tag->name;
                 }
             }
         }
         $venue_categories = ORM::factory('venue_category')->find_all()->select_list('id', 'name');
         $form['venue_category_id'] = $venue_categories;
         widget::add('main', View_Mod::factory('venues/venue_edit', array('form' => $form, 'values' => $form_values, 'errors' => $form_errors)));
//.........这里部分代码省略.........

 /**
  * Sign out
  */
 public function out()
 {
     $this->history = false;
     $this->visitor->logout();
     // Redirect back to the login page
     url::back();
 }