add block form to subscribers list and profile page

I added a small form for blocking users to profiles in the profile
list, and also to the profile page.

I also added an action to handle the results of blocking someone.

This required some changes to the profile list class (so I could
add the block form), so I made them. And the gallery class lets its
subclasses return a subclass of ProfileList for their profile list.

darcs-hash:20081208055511-5ed1f-e2e09986bd3b9cbb6a00a0c6b94f49ea78b7bdab.gz

1 files changed, 146 insertions, 0 deletions

diff --git a/actions/block.php b/actions/block.php
new file mode 100644
index 000000000..a9fcfb49c
--- /dev/null
+++ b/actions/block.php
@@ -0,0 +1,146 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * 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/>.
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
+class BlockAction extends Action {
+
+    var $profile = NULL;
+
+    function prepare($args) {
+
+        parent::prepare($args);
+
+        if (!common_logged_in()) {
+            $this->client_error(_('Not logged in.'));
+            return false;
+        }
+
+		$token = $this->trimmed('token');
+
+		if (!$token || $token != common_session_token()) {
+			$this->client_error(_('There was a problem with your session token. Try again, please.'));
+			return;
+		}
+
+        $id = $this->trimmed('blockto');
+
+        if (!$id) {
+            $this->client_error(_('No profile specified.'));
+            return false;
+        }
+
+        $this->profile = Profile::staticGet('id', $id);
+
+        if (!$this->profile) {
+            $this->client_error(_('No profile with that ID.'));
+            return false;
+        }
+    }
+
+    function handle($args=NULL) {
+        if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+            if ($this->arg('block')) {
+                $this->are_you_sure_form();
+            } else if ($this->arg('no')) {
+                $cur = common_current_user();
+                common_redirect(common_local_url('subscribers',
+                                                 array('nickname' => $cur->nickname)));
+            } else if ($this->arg('yes')) {
+                $this->block_profile();
+            }
+        }
+    }
+
+    function are_you_sure_form() {
+
+        $id = $this->profile->id;
+
+        common_element_start('p', NULL,
+                             _('Are you sure you want to block this user? '.
+                               'Afterwards, they will be unsubscribed from you, '.
+                               'unable to subscribe to you in the future, and '.
+                               'you will not be notified of any @-replies from them.'));
+
+        common_element_start('form', array('id' => 'block-' . $id,
+                                           'method' => 'post',
+                                           'class' => 'block',
+                                           'action' => common_local_url('block')));
+
+        common_hidden('token', common_session_token());
+
+        common_element('input', array('id' => 'blockto-' . $id,
+                                      'name' => 'blockto',
+                                      'type' => 'hidden',
+                                      'value' => $id));
+
+        common_submit('no', _('No'));
+        common_submit('yes', _('Yes'));
+
+        common_element_end('form');
+    }
+
+    function block_profile() {
+
+        $cur = common_current_user();
+
+        if ($cur->hasBlocked($this->profile)) {
+            $this->client_error(_('You have already blocked this user.'));
+            return;
+        }
+
+        # Add a new block record
+
+        $block = new Profile_block();
+
+        # Begin a transaction
+
+        $block->query('BEGIN');
+
+        $block->blocker = $cur->id;
+        $block->blocked = $this->profile->id;
+
+        $result = $block->insert();
+
+        if (!$result) {
+            common_log_db_error($block, 'INSERT', __FILE__);
+            $this->server_error(_('Could not save new block record.'));
+            return;
+        }
+
+        # Cancel their subscription, if it exists
+
+		$sub = Subscription::pkeyGet(array('subscriber' => $this->profile->id,
+										   'subscribed' => $cur->id));
+
+        if ($sub) {
+            $result = $sub->delete();
+            if (!$result) {
+                common_log_db_error($sub, 'DELETE', __FILE__);
+                $this->server_error(_('Could not delete subscription.'));
+                return;
+            }
+        }
+
+        $block->query('COMMIT');
+
+        common_redirect(common_local_url('subscribers',
+                                         array('nickname' => $cur->nickname)));
+    }
+}