actions/deletegroup.php

   1 <?php
   2 /**
   3  * StatusNet, the distributed open-source microblogging tool
   4  *
   5  * Delete a group
   6  *
   7  * PHP version 5
   8  *
   9  * LICENCE: This program is free software: you can redistribute it and/or modify
  10  * it under the terms of the GNU Affero General Public License as published by
  11  * the Free Software Foundation, either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU Affero General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Affero General Public License
  20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  *
  22  * @category  Group
  23  * @package   StatusNet
  24  * @author    Evan Prodromou <evan@status.net>
  25  * @author    Brion Vibber <brion@status.net>
  26  * @copyright 2008-2010 StatusNet, Inc.
  27  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  28  * @link      http://status.net/
  29  */
  30
  31 if (!defined('STATUSNET') && !defined('LACONICA')) {
  32     exit(1);
  33 }
  34
  35 /**
  36  * Delete a group
  37  *
  38  * This is the action for deleting a group.
  39  *
  40  * @category Group
  41  * @package  StatusNet
  42  * @author   Evan Prodromou <evan@status.net>
  43  * @author   Brion Vibber <brion@status.net>
  44  * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  45  * @link     http://status.net/
  46  * @fixme merge more of this code with related variants
  47  */
  48
  49 class DeletegroupAction extends RedirectingAction
  50 {
  51     var $group = null;
  52
  53     /**
  54      * Prepare to run
  55      *
  56      * @fixme merge common setup code with other group actions
  57      * @fixme allow group admins to delete their own groups
  58      */
  59
  60     function prepare($args)
  61     {
  62         parent::prepare($args);
  63
  64         if (!common_logged_in()) {
  65             $this->clientError(_('You must be logged in to delete a group.'));
  66             return false;
  67         }
  68
  69         $nickname_arg = $this->trimmed('nickname');
  70         $id = intval($this->arg('id'));
  71         if ($id) {
  72             $this->group = User_group::staticGet('id', $id);
  73         } else if ($nickname_arg) {
  74             $nickname = common_canonical_nickname($nickname_arg);
  75
  76             // Permanent redirect on non-canonical nickname
  77
  78             if ($nickname_arg != $nickname) {
  79                 $args = array('nickname' => $nickname);
  80                 common_redirect(common_local_url('leavegroup', $args), 301);
  81                 return false;
  82             }
  83
  84             $local = Local_group::staticGet('nickname', $nickname);
  85
  86             if (!$local) {
  87                 $this->clientError(_('No such group.'), 404);
  88                 return false;
  89             }
  90
  91             $this->group = User_group::staticGet('id', $local->group_id);
  92         } else {
  93             $this->clientError(_('No nickname or ID.'), 404);
  94             return false;
  95         }
  96
  97         if (!$this->group) {
  98             $this->clientError(_('No such group.'), 404);
  99             return false;
 100         }
 101
 102         $cur = common_current_user();
 103         if (!$cur->hasRight(Right::DELETEGROUP)) {
 104             $this->clientError(_('You are not allowed to delete this group.'), 403);
 105             return false;
 106         }
 107
 108         return true;
 109     }
 110
 111     /**
 112      * Handle the request
 113      *
 114      * On POST, delete the group.
 115      *
 116      * @param array $args unused
 117      *
 118      * @return void
 119      */
 120
 121     function handle($args)
 122     {
 123         parent::handle($args);
 124         if ($_SERVER['REQUEST_METHOD'] == 'POST') {
 125             if ($this->arg('no')) {
 126                 $this->returnToPrevious();
 127                 return;
 128             } elseif ($this->arg('yes')) {
 129                 $this->handlePost();
 130                 return;
 131             }
 132         }
 133         $this->showPage();
 134     }
 135
 136     function handlePost()
 137     {
 138         $cur = common_current_user();
 139
 140         try {
 141             if (Event::handle('StartDeleteGroup', array($this->group))) {
 142                 $this->group->delete();
 143                 Event::handle('EndDeleteGroup', array($this->group));
 144             }
 145         } catch (Exception $e) {
 146             $this->serverError(sprintf(_('Could not delete group %2$s.'),
 147                                        $this->group->nickname));
 148         }
 149
 150         if ($this->boolean('ajax')) {
 151             $this->startHTML('text/xml;charset=utf-8');
 152             $this->elementStart('head');
 153             $this->element('title', null, sprintf(_('Deleted group %2$s'),
 154                                                   $this->group->nickname));
 155             $this->elementEnd('head');
 156             $this->elementStart('body');
 157             // @fixme add a sensible AJAX response form!
 158             $this->elementEnd('body');
 159             $this->elementEnd('html');
 160         } else {
 161             // @fixme if we could direct to the page on which this group
 162             // would have shown... that would be awesome
 163             common_redirect(common_local_url('groups'),
 164                             303);
 165         }
 166     }
 167
 168     function title() {
 169         return _('Delete group');
 170     }
 171
 172     function showContent() {
 173         $this->areYouSureForm();
 174     }
 175
 176     /**
 177      * Confirm with user.
 178      * Ripped from DeleteuserAction
 179      *
 180      * Shows a confirmation form.
 181      *
 182      * @fixme refactor common code for things like this
 183      * @return void
 184      */
 185     function areYouSureForm()
 186     {
 187         $id = $this->group->id;
 188         $this->elementStart('form', array('id' => 'deletegroup-' . $id,
 189                                            'method' => 'post',
 190                                            'class' => 'form_settings form_entity_block',
 191                                            'action' => common_local_url('deletegroup', array('id' => $this->group->id))));
 192         $this->elementStart('fieldset');
 193         $this->hidden('token', common_session_token());
 194         $this->element('legend', _('Delete group'));
 195         if (Event::handle('StartDeleteGroupForm', array($this, $this->group))) {
 196             $this->element('p', null,
 197                            _('Are you sure you want to delete this group? '.
 198                              'This will clear all data about the group from the '.
 199                              'database, without a backup. ' .
 200                              'Public posts to this group will still appear in ' .
 201                              'individual timelines.'));
 202             foreach ($this->args as $k => $v) {
 203                 if (substr($k, 0, 9) == 'returnto-') {
 204                     $this->hidden($k, $v);
 205                 }
 206             }
 207             Event::handle('EndDeleteGroupForm', array($this, $this->group));
 208         }
 209         $this->submit('form_action-no',
 210                       // TRANS: Button label on the delete group form.
 211                       _m('BUTTON','No'),
 212                       'submit form_action-primary',
 213                       'no',
 214                       // TRANS: Submit button title for 'No' when deleting a group.
 215                       _('Do not delete this group'));
 216         $this->submit('form_action-yes',
 217                       // TRANS: Button label on the delete group form.
 218                       _m('BUTTON','Yes'),
 219                       'submit form_action-secondary',
 220                       'yes',
 221                       // TRANS: Submit button title for 'Yes' when deleting a group.
 222                       _('Delete this group'));
 223         $this->elementEnd('fieldset');
 224         $this->elementEnd('form');
 225     }
 226 }