Skeleton / Stub for Question and Answers micro-app plugin
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Zach Copley
parent
74387e75cf
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<?php
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/**
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2011, StatusNet, Inc.
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*
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* Microapp plugin for Questions and Answers
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*
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* PHP version 5
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category QuestionAndAnswer
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @copyright 2011 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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// This check helps protect against security problems;
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// your code file can't be executed directly from the web.
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exit(1);
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}
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/**
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* Question and Answer plugin
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*
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* @category Plugin
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @copyright 2011 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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class QuestionAndAnswerPlugin extends MicroappPlugin
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{
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/**
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* Set up our tables (question and answer)
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*
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* @see Schema
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* @see ColumnDef
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*
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* @return boolean hook value; true means continue processing, false means stop.
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*/
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function onCheckSchema()
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{
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$schema = Schema::get();
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$schema->ensureTable('question', Question::schemaDef());
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$schema->ensureTable('answer', Answer::schemaDef());
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return true;
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}
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/**
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* Load related modules when needed
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*
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* @param string $cls Name of the class to be loaded
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*
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* @return boolean hook value; true means continue processing, false means stop.
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*/
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function onAutoload($cls)
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{
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$dir = dirname(__FILE__);
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switch ($cls)
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{
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case 'NewquestionAction':
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case 'NewanswerAction':
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case 'ShowquestionAction':
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case 'ShowanswerAction':
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include_once $dir . '/' . strtolower(mb_substr($cls, 0, -6)) . '.php';
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return false;
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case 'QuestionForm':
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case 'AnswerForm':
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include_once $dir . '/'.strtolower($cls).'.php';
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break;
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case 'Question':
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case 'Answer':
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include_once $dir . '/'.$cls.'.php';
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return false;
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default:
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return true;
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}
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}
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/**
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* Map URLs to actions
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*
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* @param Net_URL_Mapper $m path-to-action mapper
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*
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* @return boolean hook value; true means continue processing, false means stop.
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*/
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function onRouterInitialized($m)
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{
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$m->connect('main/question/new',
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array('action' => 'newquestion'));
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$m->connect('main/question/answer',
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array('action' => 'newanswer'));
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$m->connect('question/:id',
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array('action' => 'showquestion'),
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array('id' => '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'));
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$m->connect('answer/:id',
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array('action' => 'showanswer'),
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array('id' => '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'));
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return true;
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}
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function onPluginVersion(&$versions)
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{
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$versions[] = array(
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'name' => 'QuestionAndAnswer',
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'version' => STATUSNET_VERSION,
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'author' => 'Zach Copley',
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'homepage' => 'http://status.net/wiki/Plugin:QuestionAndAnswer',
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'description' =>
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_m('Question and Answers micro-app.')
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);
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return true;
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}
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function appTitle() {
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return _m('Question');
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}
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function tag() {
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return 'question';
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}
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function types() {
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/*
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return array(Happening::OBJECT_TYPE,
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RSVP::POSITIVE,
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RSVP::NEGATIVE,
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RSVP::POSSIBLE);
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*/
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}
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/**
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* Given a parsed ActivityStreams activity, save it into a notice
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* and other data structures.
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*
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* @param Activity $activity
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* @param Profile $actor
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* @param array $options=array()
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*
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* @return Notice the resulting notice
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*/
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function saveNoticeFromActivity($activity, $actor, $options=array())
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{
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if (count($activity->objects) != 1) {
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throw new Exception('Too many activity objects.');
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}
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$questionObj = $activity->objects[0];
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if ($questinoObj->type != Question::OBJECT_TYPE) {
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throw new Exception('Wrong type for object.');
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}
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$notice = null;
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switch ($activity->verb) {
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case ActivityVerb::POST:
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$notice = Question::saveNew(
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$actor,
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$questionObj->title
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// null,
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// $questionObj->summary,
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// $options
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);
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break;
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case Answer::NORMAL:
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case Answer::ANONYMOUS:
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$question = Question::staticGet('uri', $questionObj->id);
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if (empty($question)) {
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// FIXME: save the question
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throw new Exception("Answer to unknown question.");
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}
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$notice = Answer::saveNew($actor, $question, $activity->verb, $options);
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break;
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default:
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throw new Exception("Unknown verb for question");
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}
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return $notice;
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}
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/**
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* Turn a Notice into an activity object
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*
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* @param Notice $notice
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*
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* @return ActivityObject
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*/
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function activityObjectFromNotice($notice)
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{
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$question = null;
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switch ($notice->object_type) {
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case Question::OBJECT_TYPE:
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$question = Qeustion::fromNotice($notice);
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break;
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case Answer::NORMAL:
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case Answer::ANONYMOUS:
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$answer = Answer::fromNotice($notice);
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$question = $answer->getQuestion();
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break;
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}
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if (empty($question)) {
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throw new Exception("Unknown object type.");
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}
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$notice = $question->getNotice();
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if (empty($notice)) {
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throw new Exception("Unknown question notice.");
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}
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$obj = new ActivityObject();
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$obj->id = $question->uri;
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$obj->type = Question::OBJECT_TYPE;
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$obj->title = $question->title;
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$obj->link = $notice->bestUrl();
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// XXX: probably need other stuff here
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return $obj;
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}
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/**
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* Change the verb on Answer notices
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*
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* @param Notice $notice
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*
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* @return ActivityObject
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*/
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function onEndNoticeAsActivity($notice, &$act) {
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switch ($notice->object_type) {
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case Answer::NORMAL:
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case Answer::ANONYMOUS:
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$act->verb = $notice->object_type;
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break;
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}
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return true;
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}
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/**
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* Custom HTML output for our notices
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*
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* @param Notice $notice
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* @param HTMLOutputter $out
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*/
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function showNotice($notice, $out)
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{
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switch ($notice->object_type) {
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case Question::OBJECT_TYPE:
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$this->showQuestionNotice($notice, $out);
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break;
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case Answer::NORMAL:
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case Answer::ANONYMOUS:
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case RSVP::POSSIBLE:
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$this->showAnswerNotice($notice, $out);
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break;
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}
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$out->elementStart('div', array('class' => 'question'));
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$profile = $notice->getProfile();
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$avatar = $profile->getAvatar(AVATAR_MINI_SIZE);
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$out->element('img',
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array('src' => ($avatar) ?
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$avatar->displayUrl() :
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Avatar::defaultImage(AVATAR_MINI_SIZE),
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'class' => 'avatar photo bookmark-avatar',
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'width' => AVATAR_MINI_SIZE,
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'height' => AVATAR_MINI_SIZE,
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'alt' => $profile->getBestName()));
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$out->raw(' '); // avoid for AJAX XML compatibility
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$out->elementStart('span', 'vcard author'); // hack for belongsOnTimeline; JS needs to be able to find the author
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$out->element('a',
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array('class' => 'url',
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'href' => $profile->profileurl,
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'title' => $profile->getBestName()),
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$profile->nickname);
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$out->elementEnd('span');
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}
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function showAnswerNotice($notice, $out)
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{
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$rsvp = Answer::fromNotice($notice);
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$out->elementStart('div', 'answer');
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$out->raw($answer->asHTML());
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$out->elementEnd('div');
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return;
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}
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function showQuestionNotice($notice, $out)
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{
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$profile = $notice->getProfile();
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$question = Question::fromNotice($notice);
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assert(!empty($question));
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assert(!empty($profile));
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$out->elementStart('div', 'question-notice');
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$out->elementStart('h3');
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if (!empty($question->url)) {
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$out->element('a',
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array('href' => $question->url,
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'class' => 'question-title'),
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$question->title);
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} else {
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$out->text($question->title);
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}
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if (!empty($question->location)) {
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$out->elementStart('div', 'question-location');
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$out->element('strong', null, _('Location: '));
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$out->element('span', 'location', $question->location);
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$out->elementEnd('div');
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}
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if (!empty($question->description)) {
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$out->elementStart('div', 'question-description');
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$out->element('strong', null, _('Description: '));
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$out->element('span', 'description', $question->description);
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$out->elementEnd('div');
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}
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$answers = $question->getAnswers();
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$out->elementStart('div', 'question-answers');
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$out->element('strong', null, _('Answer: '));
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$out->element('span', 'question-answer');
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// XXX I dunno
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$out->elementEnd('div');
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$user = common_current_user();
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if (!empty($user)) {
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$question = $question->getAnswer($user->getProfile());
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if (empty($answer)) {
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$form = new AnswerForm($question, $out);
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}
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$form->show();
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}
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$out->elementEnd('div');
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}
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/**
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* Form for our app
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*
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* @param HTMLOutputter $out
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* @return Widget
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*/
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function entryForm($out)
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{
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return new QuestionForm($out);
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}
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/**
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* When a notice is deleted, clean up related tables.
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*
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* @param Notice $notice
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*/
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function deleteRelated($notice)
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{
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switch ($notice->object_type) {
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case Question::OBJECT_TYPE:
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common_log(LOG_DEBUG, "Deleting question from notice...");
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$question = Question::fromNotice($notice);
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$question->delete();
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break;
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case Answer::NORMAL:
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case Answer::ANONYMOUS:
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common_log(LOG_DEBUG, "Deleting answer from notice...");
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$answer = Answer::fromNotice($notice);
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common_log(LOG_DEBUG, "to delete: $answer->id");
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$answer->delete();
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break;
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default:
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common_log(LOG_DEBUG, "Not deleting related, wtf...");
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}
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}
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function onEndShowScripts($action)
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{
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// XXX maybe some cool shiz here
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}
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function onEndShowStyles($action)
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{
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$action->cssLink($this->path('questionandanswer.css'));
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return true;
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}
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}
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