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msd2/phpBB3/phpbb/feed/attachments_base.php

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+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\feed;
+
+/**
+* Abstract class for feeds displaying attachments
+*/
+abstract class attachments_base extends base
+{
+	/**
+	* Attachments that may be displayed
+	*/
+	protected $attachments = array();
+
+	/**
+	* Retrieve the list of attachments that may be displayed
+	*
+	* @param array $post_ids Specify for which post IDs to fetch the attachments (optional)
+	* @param array $topic_ids Specify for which topic IDs to fetch the attachments (optional)
+	*/
+	protected function fetch_attachments($post_ids = array(), $topic_ids = array())
+	{
+		$sql_array = array(
+			'SELECT'   => 'a.*',
+			'FROM'     => array(
+				ATTACHMENTS_TABLE => 'a'
+			),
+			'WHERE'    => 'a.in_message = 0 ',
+			'ORDER_BY' => 'a.filetime DESC, a.post_msg_id ASC',
+		);
+
+		if (!empty($post_ids))
+		{
+			$sql_array['WHERE'] .= 'AND ' . $this->db->sql_in_set('a.post_msg_id', $post_ids);
+		}
+		else if (!empty($topic_ids))
+		{
+			if (isset($this->topic_id))
+			{
+				$topic_ids[] = $this->topic_id;
+			}
+
+			$sql_array['WHERE'] .= 'AND ' . $this->db->sql_in_set('a.topic_id', $topic_ids);
+		}
+		else if (isset($this->topic_id))
+		{
+			$sql_array['WHERE'] .= 'AND a.topic_id = ' . (int) $this->topic_id;
+		}
+		else if (isset($this->forum_id))
+		{
+			$sql_array['LEFT_JOIN'] = array(
+				array(
+					'FROM' => array(TOPICS_TABLE => 't'),
+					'ON'   => 'a.topic_id = t.topic_id',
+				)
+			);
+			$sql_array['WHERE'] .= 'AND t.forum_id = ' . (int) $this->forum_id;
+		}
+		else
+		{
+			// Do not allow querying the full attachments table
+			throw new \RuntimeException($this->user->lang('INVALID_FEED_ATTACHMENTS'));
+		}
+
+		$sql = $this->db->sql_build_query('SELECT', $sql_array);
+		$result = $this->db->sql_query($sql);
+
+		// Set attachments in feed items
+		while ($row = $this->db->sql_fetchrow($result))
+		{
+			$this->attachments[$row['post_msg_id']][] = $row;
+		}
+		$this->db->sql_freeresult($result);
+	}
+
+	/**
+	* Get attachments related to a given post
+	*
+	* @param $post_id  int  Post id
+	* @return mixed Attachments related to $post_id
+	*/
+	public function get_attachments($post_id)
+	{
+		return $this->attachments[$post_id];
+	}
+}