Logic to have group joins turn into pending joins automatically when group is set to mod; allow users to cancel their pending group requests.

actions/cancelgroup.php

@@ -0,0 +1,154 @@
+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Leave a group
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category  Group
+ * @package   StatusNet
+ * @author    Evan Prodromou <evan@status.net>
+ * @copyright 2008-2009 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link      http://status.net/
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) {
+    exit(1);
+}
+
+/**
+ * Leave a group
+ *
+ * This is the action for leaving a group. It works more or less like the subscribe action
+ * for users.
+ *
+ * @category Group
+ * @package  StatusNet
+ * @author   Evan Prodromou <evan@status.net>
+ * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link     http://status.net/
+ */
+class CancelgroupAction extends Action
+{
+    var $group = null;
+
+    /**
+     * Prepare to run
+     */
+    function prepare($args)
+    {
+        parent::prepare($args);
+
+        if (!common_logged_in()) {
+            // TRANS: Client error displayed when trying to leave a group while not logged in.
+            $this->clientError(_('You must be logged in to leave a group.'));
+            return false;
+        }
+
+        $nickname_arg = $this->trimmed('nickname');
+        $id = intval($this->arg('id'));
+        if ($id) {
+            $this->group = User_group::staticGet('id', $id);
+        } else if ($nickname_arg) {
+            $nickname = common_canonical_nickname($nickname_arg);
+
+            // Permanent redirect on non-canonical nickname
+
+            if ($nickname_arg != $nickname) {
+                $args = array('nickname' => $nickname);
+                common_redirect(common_local_url('leavegroup', $args), 301);
+                return false;
+            }
+
+            $local = Local_group::staticGet('nickname', $nickname);
+
+            if (!$local) {
+                // TRANS: Client error displayed when trying to leave a non-local group.
+                $this->clientError(_('No such group.'), 404);
+                return false;
+            }
+
+            $this->group = User_group::staticGet('id', $local->group_id);
+        } else {
+            // TRANS: Client error displayed when trying to leave a group without providing a group name or group ID.
+            $this->clientError(_('No nickname or ID.'), 404);
+            return false;
+        }
+
+        if (!$this->group) {
+            // TRANS: Client error displayed when trying to leave a non-existing group.
+            $this->clientError(_('No such group.'), 404);
+            return false;
+        }
+
+        $cur = common_current_user();
+        $this->profile = $cur->getProfile();
+
+        $this->request = Group_join_queue::pkeyGet(array('profile_id' => $this->profile->id,
+                                                         'group_id' => $this->group->id));
+
+        if (empty($this->request)) {
+            $this->clientError(_('You are not in the moderation queue for this group.'), 403);
+        }
+        return true;
+    }
+
+    /**
+     * Handle the request
+     *
+     * On POST, add the current user to the group
+     *
+     * @param array $args unused
+     *
+     * @return void
+     */
+    function handle($args)
+    {
+        parent::handle($args);
+
+        try {
+            $this->profile->cancelJoinGroup($this->group);
+        } catch (Exception $e) {
+            common_log(LOG_ERROR, "Exception canceling group sub: " . $e->getMessage());
+            // TRANS: Server error displayed when cancelling a queued group join request fails.
+            // TRANS: %1$s is the leaving user's nickname, $2$s is the group nickname for which the leave failed.
+            $this->serverError(sprintf(_('Could not cancel request for user %1$s to join group %2$s.'),
+                                       $this->profile->nickname, $this->group->nickname));
+            return;
+        }
+
+        if ($this->boolean('ajax')) {
+            $this->startHTML('text/xml;charset=utf-8');
+            $this->elementStart('head');
+            // TRANS: Title for leave group page after leaving.
+            $this->element('title', null, sprintf(_m('TITLE','%1$s left group %2$s'),
+                                                  $this->profile->nickname,
+                                                  $this->group->nickname));
+            $this->elementEnd('head');
+            $this->elementStart('body');
+            $jf = new JoinForm($this, $this->group);
+            $jf->show();
+            $this->elementEnd('body');
+            $this->elementEnd('html');
+        } else {
+            common_redirect(common_local_url('groupmembers', array('nickname' =>
+                                                                   $this->group->nickname)),
+                            303);
+        }
+    }
+}

actions/joingroup.php

@@ -129,7 +129,7 @@ class JoingroupAction extends Action
         $cur = common_current_user();
 
         try {
-            $cur->joinGroup($this->group);
+            $result = $cur->joinGroup($this->group);
         } catch (Exception $e) {
             // TRANS: Server error displayed when joining a group failed in the database.
             // TRANS: %1$s is the joining user's nickname, $2$s is the group nickname for which the join failed.
@@ -147,8 +147,16 @@ class JoingroupAction extends Action
                                                   $this->group->nickname));
             $this->elementEnd('head');
             $this->elementStart('body');
-            $lf = new LeaveForm($this, $this->group);
+
-            $lf->show();
+            if ($result instanceof Group_member) {
+                $form = new LeaveForm($this, $this->group);
+            } else if ($result instanceof Group_join_queue) {
+                $form = new CancelGroupForm($this, $this->group);
+            } else {
+                // wtf?
+                throw new Exception(_m("Unknown error joining group."));
+            }
+            $form->show();
             $this->elementEnd('body');
             $this->elementEnd('html');
         } else {

classes/Group_join_queue.php

@@ -18,6 +18,10 @@ class Group_join_queue extends Managed_DataObject
     function staticGet($k,$v=null)
     { return Memcached_DataObject::staticGet('Group_join_queue',$k,$v); }
 
+    /* Pkey get */
+    function pkeyGet($k)
+    { return Memcached_DataObject::pkeyGet('Group_join_queue',$k); }
+
     /* the code above is auto generated do not remove the tag below */
     ###END_AUTOCODE
 

classes/Profile.php

@@ -313,6 +313,13 @@ class Profile extends Memcached_DataObject
         }
     }
 
+    function isPendingMember($group)
+    {
+        $request = Group_join_queue::pkeyGet(array('profile_id' => $this->id,
+                                                   'group_id' => $group->id));
+        return !empty($request);
+    }
+
     function getGroups($offset=0, $limit=null)
     {
         $qry =
@@ -360,6 +367,23 @@ class Profile extends Memcached_DataObject
         return $ok;
     }
 
+    /**
+     * Cancel a pending group join...
+     *
+     * @param User_group $group
+     */
+    function cancelJoinGroup(User_group $group)
+    {
+        $request = Group_join_queue::pkeyGet(array('profile_id' => $this->id,
+                                                   'group_id' => $group->id));
+        if ($request) {
+            if (Event::handle('StartCancelJoinGroup', array($group, $this))) {
+                $request->delete();
+                Event::handle('EndCancelJoinGroup', array($group, $this));
+            }
+        }
+    }
+
     /**
      * Leave a group that this profile is a member of.
      *

lib/cancelgroupform.php

@@ -0,0 +1,116 @@
+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Form for leaving a group
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category  Form
+ * @package   StatusNet
+ * @author    Evan Prodromou <evan@status.net>
+ * @author    Sarven Capadisli <csarven@status.net>
+ * @copyright 2009 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link      http://status.net/
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) {
+    exit(1);
+}
+
+require_once INSTALLDIR.'/lib/form.php';
+
+/**
+ * Form for leaving a group
+ *
+ * @category Form
+ * @package  StatusNet
+ * @author   Evan Prodromou <evan@status.net>
+ * @author   Sarven Capadisli <csarven@status.net>
+ * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link     http://status.net/
+ *
+ * @see      UnsubscribeForm
+ */
+
+class CancelGroupForm extends Form
+{
+    /**
+     * group for user to leave
+     */
+
+    var $group = null;
+
+    /**
+     * Constructor
+     *
+     * @param HTMLOutputter $out   output channel
+     * @param group         $group group to leave
+     */
+
+    function __construct($out=null, $group=null)
+    {
+        parent::__construct($out);
+
+        $this->group = $group;
+    }
+
+    /**
+     * ID of the form
+     *
+     * @return string ID of the form
+     */
+
+    function id()
+    {
+        return 'group-cancel-' . $this->group->id;
+    }
+
+    /**
+     * class of the form
+     *
+     * @return string of the form class
+     */
+
+    function formClass()
+    {
+        return 'form_group_leave ajax';
+    }
+
+    /**
+     * Action of the form
+     *
+     * @return string URL of the action
+     */
+
+    function action()
+    {
+        return common_local_url('cancelgroup',
+                                array('id' => $this->group->id));
+    }
+
+    /**
+     * Action elements
+     *
+     * @return void
+     */
+
+    function formActions()
+    {
+        $this->out->submit('submit', _('Cancel join request'));
+    }
+}

lib/groupprofileblock.php

@@ -97,10 +97,14 @@ class GroupProfileBlock extends ProfileBlock
             $this->out->elementStart('li', 'entity_subscribe');
             if (Event::handle('StartGroupSubscribe', array($this, $this->group))) {
                 if ($cur) {
-                    if ($cur->isMember($this->group)) {
+                    $profile = $cur->getProfile();
+                    if ($profile->isMember($this->group)) {
                         $lf = new LeaveForm($this->out, $this->group);
                         $lf->show();
-                    } else if (!Group_block::isBlocked($this->group, $cur->getProfile())) {
+                    } else if ($profile->isPendingMember($this->group)) {
+                        $cf = new CancelGroupForm($this->out, $this->group);
+                        $cf->show();
+                    } else if (!Group_block::isBlocked($this->group, $profile)) {
                         $jf = new JoinForm($this->out, $this->group);
                         $jf->show();
                     }

lib/router.php

@@ -366,7 +366,7 @@ class Router
 
             $m->connect('group/new', array('action' => 'newgroup'));
 
-            foreach (array('edit', 'join', 'leave', 'delete') as $v) {
+            foreach (array('edit', 'join', 'leave', 'delete', 'cancel') as $v) {
                 $m->connect('group/:nickname/'.$v,
                             array('action' => $v.'group'),
                             array('nickname' => Nickname::DISPLAY_FMT));