305 lines
9.4 KiB
PHP
305 lines
9.4 KiB
PHP
<?php
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/**
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* Data class to save answers to questions
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*
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* PHP version 5
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*
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* @category QnA
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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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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* 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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if (!defined('STATUSNET')) {
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exit(1);
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}
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/**
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* For storing answers
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*
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* @category QnA
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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*
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* @see DB_DataObject
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*/
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class QnA_Answer extends Managed_DataObject
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{
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const OBJECT_TYPE = 'http://activityschema.org/object/answer';
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public $__table = 'qna_answer'; // table name
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public $id; // char(36) primary key not null -> UUID
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public $uri; // varchar(255)
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public $question_id; // char(36) -> question.id UUID
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public $profile_id; // int -> question.id
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public $best; // (boolean) int -> whether the question asker has marked this as the best answer
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public $revisions; // int -> count of revisions to this answer
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public $content; // text -> response text
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public $created; // datetime
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/**
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* The One True Thingy that must be defined and declared.
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*/
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public static function schemaDef()
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{
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return array(
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'description' => 'Record of answers to questions',
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'fields' => array(
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'id' => array(
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'type' => 'char',
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'length' => 36,
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'not null' => true, 'description' => 'UUID of the response',
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),
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'uri' => array(
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'type' => 'varchar',
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'length' => 255,
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'not null' => true,
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'description' => 'UUID to the answer notice',
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),
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'question_id' => array(
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'type' => 'char',
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'length' => 36,
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'not null' => true,
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'description' => 'UUID of question being responded to',
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),
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'content' => array('type' => 'text'), // got a better name?
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'best' => array('type' => 'int', 'size' => 'tiny'),
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'revisions' => array('type' => 'int'),
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'profile_id' => array('type' => 'int'),
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'created' => array('type' => 'datetime', 'not null' => true),
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),
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'primary key' => array('id'),
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'unique keys' => array(
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'question_uri_key' => array('uri'),
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'question_id_profile_id_key' => array('question_id', 'profile_id'),
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),
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'indexes' => array(
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'profile_id_question_id_index' => array('profile_id', 'question_id'),
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)
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);
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}
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/**
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* Get an answer based on a notice
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*
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* @param Notice $notice Notice to check for
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*
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* @return QnA_Answer found response or null
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*/
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static function getByNotice($notice)
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{
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$answer = self::getKV('uri', $notice->uri);
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if (empty($answer)) {
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throw new Exception("No answer with URI {$notice->uri}");
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}
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return $answer;
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}
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/**
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* Get the notice that belongs to this answer
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*
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* @return Notice
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*/
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function getNotice()
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{
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return Notice::getKV('uri', $this->uri);
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}
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static function fromNotice($notice)
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{
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return QnA_Answer::getKV('uri', $notice->uri);
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}
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function getUrl()
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{
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return $this->getNotice()->getUrl();
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}
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/**
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* Get the Question this is an answer to
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*
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* @return QnA_Question
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*/
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function getQuestion()
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{
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$question = QnA_Question::getKV('id', $this->question_id);
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if (empty($question)) {
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// TRANS: Exception thown when getting a question with a non-existing ID.
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// TRANS: %s is the non-existing question ID.
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throw new Exception(sprintf(_m('No question with ID %s'),$this->question_id));
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}
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return $question;
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}
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function getProfile()
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{
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$profile = Profile::getKV('id', $this->profile_id);
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if (empty($profile)) {
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// TRANS: Exception thown when getting a profile with a non-existing ID.
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// TRANS: %s is the non-existing profile ID.
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throw new Exception(sprintf(_m('No profile with ID %s'),$this->profile_id));
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}
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return $profile;
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}
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function asHTML()
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{
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return self::toHTML(
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$this->getProfile(),
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$this->getQuestion(),
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$this
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);
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}
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function asString()
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{
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return self::toString(
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$this->getProfile(),
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$this->getQuestion(),
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$this
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);
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}
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static function toHTML($profile, $question, $answer)
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{
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$notice = $question->getNotice();
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$out = new XMLStringer();
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$cls = array('qna_answer');
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if (!empty($answer->best)) {
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$cls[] = 'best';
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}
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$out->elementStart('p', array('class' => implode(' ', $cls)));
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$out->elementStart('span', 'answer-content');
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$out->raw(common_render_text($answer->content));
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$out->elementEnd('span');
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if (!empty($answer->revisions)) {
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$out->elementstart('span', 'answer-revisions');
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$out->text(
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htmlspecialchars(
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// Notification of how often an answer was revised.
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// TRANS: %s is the number of answer revisions.
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sprintf(_m('%s revision','%s revisions',$answer->revisions), $answer->revisions)
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)
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);
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$out->elementEnd('span');
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}
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$out->elementEnd('p');
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return $out->getString();
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}
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static function toString($profile, $question, $answer)
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{
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// @todo FIXME: unused variable?
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$notice = $question->getNotice();
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return sprintf(
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// TRANS: Text for a question that was answered.
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// TRANS: %1$s is the user that answered, %2$s is the question title,
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// TRANS: %2$s is the answer content.
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_m('%1$s answered the question "%2$s": %3$s'),
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htmlspecialchars($profile->getBestName()),
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htmlspecialchars($question->title),
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htmlspecialchars($answer->content)
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);
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}
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/**
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* Save a new answer notice
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*
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* @param Profile $profile
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* @param Question $Question the question being answered
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* @param array
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*
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* @return Notice saved notice
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*/
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static function saveNew($profile, $question, $text, $options = null)
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{
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if (empty($options)) {
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$options = array();
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}
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$answer = new QnA_Answer();
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$answer->id = UUID::gen();
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$answer->profile_id = $profile->id;
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$answer->question_id = $question->id;
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$answer->revisions = 0;
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$answer->best = 0;
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$answer->content = $text;
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$answer->created = common_sql_now();
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$answer->uri = common_local_url(
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'qnashowanswer',
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array('id' => $answer->id)
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);
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common_log(LOG_DEBUG, "Saving answer: $answer->id, $answer->uri");
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$answer->insert();
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$content = sprintf(
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// TRANS: Text for a question that was answered.
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// TRANS: %s is the question title.
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_m('answered "%s"'),
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$question->title
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);
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$link = '<a href="' . htmlspecialchars($answer->uri) . '">' . htmlspecialchars($question->title) . '</a>';
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// TRANS: Rendered version of the notice content answering a question.
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// TRANS: %s a link to the question with question title as the link content.
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$rendered = sprintf(_m('answered "%s"'), $link);
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$tags = array();
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$replies = array();
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$options = array_merge(
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array(
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'urls' => array(),
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'content' => $content,
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'rendered' => $rendered,
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'tags' => $tags,
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'replies' => $replies,
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'reply_to' => $question->getNotice()->id,
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'object_type' => self::OBJECT_TYPE
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),
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$options
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);
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if (!array_key_exists('uri', $options)) {
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$options['uri'] = $answer->uri;
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}
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$saved = Notice::saveNew(
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$profile->id,
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$content,
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array_key_exists('source', $options) ?
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$options['source'] : 'web',
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$options
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);
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return $saved;
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}
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}
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