We can now store incoming questions

database.sql

@@ -1,6 +1,6 @@
 -- ------------------------------------------
 -- Friendica 2022.05-dev (Siberian Iris)
--- DB_UPDATE_VERSION 1457
+-- DB_UPDATE_VERSION 1458
 -- ------------------------------------------
 
 
@@ -1161,6 +1161,32 @@ CREATE TABLE IF NOT EXISTS `post-media` (
 	FOREIGN KEY (`uri-id`) REFERENCES `item-uri` (`id`) ON UPDATE RESTRICT ON DELETE CASCADE
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Attached media';
 
+--
+-- TABLE post-question
+--
+CREATE TABLE IF NOT EXISTS `post-question` (
+	`id` int unsigned NOT NULL auto_increment COMMENT 'sequential ID',
+	`uri-id` int unsigned NOT NULL COMMENT 'Id of the item-uri table entry that contains the item uri',
+	`multiple` boolean NOT NULL DEFAULT '0' COMMENT 'Multiple choice',
+	`voters` int unsigned COMMENT 'Number of voters for this question',
+	`end-time` datetime DEFAULT '0001-01-01 00:00:00' COMMENT 'Question end time',
+	 PRIMARY KEY(`id`),
+	 UNIQUE INDEX `uri-id` (`uri-id`),
+	FOREIGN KEY (`uri-id`) REFERENCES `item-uri` (`id`) ON UPDATE RESTRICT ON DELETE CASCADE
+) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Question';
+
+--
+-- TABLE post-question-option
+--
+CREATE TABLE IF NOT EXISTS `post-question-option` (
+	`id` int unsigned NOT NULL COMMENT 'Id of the question',
+	`uri-id` int unsigned NOT NULL COMMENT 'Id of the item-uri table entry that contains the item uri',
+	`name` varchar(255) COMMENT 'Name of the option',
+	`replies` int unsigned COMMENT 'Number of replies for this question option',
+	 PRIMARY KEY(`uri-id`,`id`),
+	FOREIGN KEY (`uri-id`) REFERENCES `item-uri` (`id`) ON UPDATE RESTRICT ON DELETE CASCADE
+) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Question option';
+
 --
 -- TABLE post-tag
 --
@@ -1720,6 +1746,10 @@ CREATE VIEW `post-user-view` AS SELECT
 	`event`.`type` AS `event-type`,
 	`event`.`nofinish` AS `event-nofinish`,
 	`event`.`ignore` AS `event-ignore`,
+	`post-question`.`id` AS `question-id`,
+	`post-question`.`multiple` AS `question-multiple`,
+	`post-question`.`voters` AS `question-voters`,
+	`post-question`.`end-time` AS `question-end-time`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,
@@ -1745,6 +1775,7 @@ CREATE VIEW `post-user-view` AS SELECT
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post-user`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post-user`.`uri-id`
 			LEFT JOIN `post-delivery-data` ON `post-delivery-data`.`uri-id` = `post-user`.`uri-id` AND `post-user`.`origin`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post-user`.`uri-id`
 			LEFT JOIN `permissionset` ON `permissionset`.`id` = `post-user`.`psid`
 			LEFT JOIN `post-user` AS `parent-post` ON `parent-post`.`uri-id` = `post-user`.`parent-uri-id` AND `parent-post`.`uid` = `post-user`.`uid`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`;
@@ -1880,6 +1911,10 @@ CREATE VIEW `post-thread-user-view` AS SELECT
 	`event`.`type` AS `event-type`,
 	`event`.`nofinish` AS `event-nofinish`,
 	`event`.`ignore` AS `event-ignore`,
+	`post-question`.`id` AS `question-id`,
+	`post-question`.`multiple` AS `question-multiple`,
+	`post-question`.`voters` AS `question-voters`,
+	`post-question`.`end-time` AS `question-end-time`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,
@@ -1904,6 +1939,7 @@ CREATE VIEW `post-thread-user-view` AS SELECT
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post-thread-user`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post-thread-user`.`uri-id`
 			LEFT JOIN `post-delivery-data` ON `post-delivery-data`.`uri-id` = `post-thread-user`.`uri-id` AND `post-thread-user`.`origin`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post-thread-user`.`uri-id`
 			LEFT JOIN `permissionset` ON `permissionset`.`id` = `post-thread-user`.`psid`
 			LEFT JOIN `post-user` AS `parent-post` ON `parent-post`.`uri-id` = `post-user`.`parent-uri-id` AND `parent-post`.`uid` = `post-thread-user`.`uid`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`;
@@ -2006,6 +2042,10 @@ CREATE VIEW `post-view` AS SELECT
 	`causer`.`blocked` AS `causer-blocked`,
 	`causer`.`hidden` AS `causer-hidden`,
 	`causer`.`contact-type` AS `causer-contact-type`,
+	`post-question`.`id` AS `question-id`,
+	`post-question`.`multiple` AS `question-multiple`,
+	`post-question`.`voters` AS `question-voters`,
+	`post-question`.`end-time` AS `question-end-time`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,
@@ -2027,6 +2067,7 @@ CREATE VIEW `post-view` AS SELECT
 			LEFT JOIN `verb` ON `verb`.`id` = `post`.`vid`
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post`.`uri-id`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post`.`uri-id`
 			LEFT JOIN `post` AS `parent-post` ON `parent-post`.`uri-id` = `post`.`parent-uri-id`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`;
 
@@ -2128,6 +2169,10 @@ CREATE VIEW `post-thread-view` AS SELECT
 	`causer`.`blocked` AS `causer-blocked`,
 	`causer`.`hidden` AS `causer-hidden`,
 	`causer`.`contact-type` AS `causer-contact-type`,
+	`post-question`.`id` AS `question-id`,
+	`post-question`.`multiple` AS `question-multiple`,
+	`post-question`.`voters` AS `question-voters`,
+	`post-question`.`end-time` AS `question-end-time`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,
@@ -2149,6 +2194,7 @@ CREATE VIEW `post-thread-view` AS SELECT
 			LEFT JOIN `verb` ON `verb`.`id` = `post`.`vid`
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post-thread`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post-thread`.`uri-id`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post-thread`.`uri-id`
 			LEFT JOIN `post` AS `parent-post` ON `parent-post`.`uri-id` = `post`.`parent-uri-id`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`;
 

doc/database.md

@@ -52,6 +52,8 @@ Database Tables
 | [post-delivery-data](help/database/db_post-delivery-data) | Delivery data for items |
 | [post-link](help/database/db_post-link) | Post related external links |
 | [post-media](help/database/db_post-media) | Attached media |
+| [post-question](help/database/db_post-question) | Question |
+| [post-question-option](help/database/db_post-question-option) | Question option |
 | [post-tag](help/database/db_post-tag) | post relation to tags |
 | [post-thread](help/database/db_post-thread) | Thread related data |
 | [post-thread-user](help/database/db_post-thread-user) | Thread related data per user |

doc/database/db_post-question-option.md

@@ -0,0 +1,30 @@
+Table post-question-option
+===========
+
+Question option
+
+Fields
+------
+
+| Field   | Description                                               | Type         | Null | Key | Default | Extra |
+| ------- | --------------------------------------------------------- | ------------ | ---- | --- | ------- | ----- |
+| id      | Id of the question                                        | int unsigned | NO   | PRI | NULL    |       |
+| uri-id  | Id of the item-uri table entry that contains the item uri | int unsigned | NO   | PRI | NULL    |       |
+| name    | Name of the option                                        | varchar(255) | YES  |     | NULL    |       |
+| replies | Number of replies for this question option                | int unsigned | YES  |     | NULL    |       |
+
+Indexes
+------------
+
+| Name    | Fields     |
+| ------- | ---------- |
+| PRIMARY | uri-id, id |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uri-id | [item-uri](help/database/db_item-uri) | id |
+
+Return to [database documentation](help/database)

doc/database/db_post-question.md

@@ -0,0 +1,32 @@
+Table post-question
+===========
+
+Question
+
+Fields
+------
+
+| Field    | Description                                               | Type         | Null | Key | Default             | Extra          |
+| -------- | --------------------------------------------------------- | ------------ | ---- | --- | ------------------- | -------------- |
+| id       | sequential ID                                             | int unsigned | NO   | PRI | NULL                | auto_increment |
+| uri-id   | Id of the item-uri table entry that contains the item uri | int unsigned | NO   |     | NULL                |                |
+| multiple | Multiple choice                                           | boolean      | NO   |     | 0                   |                |
+| voters   | Number of voters for this question                        | int unsigned | YES  |     | NULL                |                |
+| end-time | Question end time                                         | datetime     | YES  |     | 0001-01-01 00:00:00 |                |
+
+Indexes
+------------
+
+| Name    | Fields         |
+| ------- | -------------- |
+| PRIMARY | id             |
+| uri-id  | UNIQUE, uri-id |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uri-id | [item-uri](help/database/db_item-uri) | id |
+
+Return to [database documentation](help/database)

src/Model/Post/Question.php

@@ -0,0 +1,57 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Model\Post;
+
+use \BadMethodCallException;
+use Friendica\Database\Database;
+use Friendica\Database\DBA;
+use Friendica\Database\DBStructure;
+
+class Question
+{
+	/**
+	 * Update a post question entry
+	 *
+	 * @param integer $uri_id
+	 * @param array   $data
+	 * @param bool    $insert_if_missing
+	 * @return bool
+	 * @throws \Exception
+	 */
+	public static function update(int $uri_id, array $data = [], bool $insert_if_missing = true)
+	{
+		if (empty($uri_id)) {
+			throw new BadMethodCallException('Empty URI_id');
+		}
+
+		$fields = DBStructure::getFieldsForTable('post-question', $data);
+
+		// Remove the key fields
+		unset($fields['uri-id']);
+
+		if (empty($fields)) {
+			return true;
+		}
+
+		return DBA::update('post-question', $fields, ['uri-id' => $uri_id], $insert_if_missing ? true : []);
+	}
+}

src/Model/Post/QuestionOption.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Model\Post;
+
+use \BadMethodCallException;
+use Friendica\Database\Database;
+use Friendica\Database\DBA;
+use Friendica\Database\DBStructure;
+
+class QuestionOption
+{
+	/**
+	 * Update a post question-option entry
+	 *
+	 * @param integer $uri_id
+	 * @param integer $id
+	 * @param array   $data
+	 * @param bool    $insert_if_missing
+	 * @return bool
+	 * @throws \Exception
+	 */
+	public static function update(int $uri_id, int $id, array $data = [], bool $insert_if_missing = true)
+	{
+		if (empty($uri_id)) {
+			throw new BadMethodCallException('Empty URI_id');
+		}
+
+		$fields = DBStructure::getFieldsForTable('post-question-option', $data);
+
+		// Remove the key fields
+		unset($fields['uri-id']);
+		unset($fields['id']);
+
+		if (empty($fields)) {
+			return true;
+		}
+
+		return DBA::update('post-question-option', $fields, ['uri-id' => $uri_id, 'id' => $id], $insert_if_missing ? true : []);
+	}
+}

src/Protocol/ActivityPub/Processor.php

@@ -152,6 +152,37 @@ class Processor
 		}
 	}
 
+	/**
+	 * Store attachment data
+	 *
+	 * @param array   $activity
+	 * @param array   $item
+	 */
+	private static function storeQuestion($activity, $item)
+	{
+		if (empty($activity['question'])) {
+			return;
+		}
+		$question = ['multiple' => $activity['question']['multiple']];
+
+		if (!empty($activity['question']['voters'])) {
+			$question['voters'] = $activity['question']['voters'];
+		}
+
+		if (!empty($activity['question']['end-time'])) {
+			$question['end-time'] = $activity['question']['end-time'];
+		}
+
+		Post\Question::update($item['uri-id'], $question);
+
+		foreach ($activity['question']['options'] as $key => $option) {
+			$option = ['name' => $option['name'], 'replies' => $option['replies']];
+			Post\QuestionOption::update($item['uri-id'], $key, $option);
+		}
+
+		Logger::debug('Storing incoming question', ['type' => $activity['type'], 'uri-id' => $item['uri-id'], 'question' => $activity['question']]);
+	}
+
 	/**
 	 * Updates a message
 	 *
@@ -178,6 +209,7 @@ class Processor
 		$item = self::processContent($activity, $item);
 
 		self::storeAttachments($activity, $item);
+		self::storeQuestion($activity, $item);
 
 		if (empty($item)) {
 			return;
@@ -347,6 +379,7 @@ class Processor
 		$item['plink'] = $activity['alternate-url'] ?? $item['uri'];
 
 		self::storeAttachments($activity, $item);
+		self::storeQuestion($activity, $item);
 
 		// We received the post via AP, so we set the protocol of the server to AP
 		$contact = Contact::getById($item['author-id'], ['gsid']);

src/Protocol/ActivityPub/Receiver.php

@@ -553,12 +553,13 @@ class Receiver
 			$object_data['from-relay'] = $activity['from-relay'];
 		}
 
+		if (in_array('as:Question', [$object_data['object_type'] ?? '', $object_data['object_object_type'] ?? ''])) {
+			self::storeUnhandledActivity(false, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
+		}
+
 		switch ($type) {
 			case 'as:Create':
 				if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
-					if ($object_data['object_type'] == 'as:Question') {
-						self::storeUnhandledActivity(false, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
-					}
 					$item = ActivityPub\Processor::createItem($object_data);
 					ActivityPub\Processor::postItem($object_data, $item);
 				} elseif (in_array($object_data['object_type'], ['pt:CacheFile'])) {
@@ -1460,7 +1461,13 @@ class Receiver
 			return [];
 		}
 
-		// @todo Check if "closed" is a thing, see here: https://www.w3.org/TR/activitystreams-vocabulary/#dfn-closed
+		$closed = JsonLD::fetchElement($object, 'as:closed', '@value');
+		if (!empty($closed)) {
+			$question['end-time'] = $closed;
+		} else {
+			$question['end-time'] = JsonLD::fetchElement($object, 'as:endTime', '@value');
+		}
+
 		$question['voters']  = (int)JsonLD::fetchElement($object, 'toot:votersCount', '@value');
 		$question['options'] = [];
 

static/dbstructure.config.php

@@ -55,7 +55,7 @@
 use Friendica\Database\DBA;
 
 if (!defined('DB_UPDATE_VERSION')) {
-	define('DB_UPDATE_VERSION', 1457);
+	define('DB_UPDATE_VERSION', 1458);
 }
 
 return [
@@ -1202,6 +1202,32 @@ return [
 			"uri-id-url" => ["UNIQUE", "uri-id", "url"],
 		]
 	],
+	"post-question" => [
+		"comment" => "Question",
+		"fields" => [
+			"id" => ["type" => "int unsigned", "not null" => "1", "extra" => "auto_increment", "primary" => "1", "comment" => "sequential ID"],
+			"uri-id" => ["type" => "int unsigned", "not null" => "1", "foreign" => ["item-uri" => "id"], "comment" => "Id of the item-uri table entry that contains the item uri"],
+			"multiple" => ["type" => "boolean", "not null" => "1", "default" => "0", "comment" => "Multiple choice"],
+			"voters" => ["type" => "int unsigned", "comment" => "Number of voters for this question"],
+			"end-time" => ["type" => "datetime", "default" => DBA::NULL_DATETIME, "comment" => "Question end time"],
+		],
+		"indexes" => [
+			"PRIMARY" => ["id"],
+			"uri-id" => ["UNIQUE", "uri-id"],
+		]
+	],
+	"post-question-option" => [
+		"comment" => "Question option",
+		"fields" => [
+			"id" => ["type" => "int unsigned", "not null" => "1", "primary" => "1", "comment" => "Id of the question"],
+			"uri-id" => ["type" => "int unsigned", "not null" => "1", "primary" => "1", "foreign" => ["item-uri" => "id"], "comment" => "Id of the item-uri table entry that contains the item uri"],
+			"name" => ["type" => "varchar(255)", "comment" => "Name of the option"],
+			"replies" => ["type" => "int unsigned", "comment" => "Number of replies for this question option"],
+		],
+		"indexes" => [
+			"PRIMARY" => ["uri-id", "id"],
+		]
+	],
 	"post-tag" => [
 		"comment" => "post relation to tags",
 		"fields" => [

static/dbview.config.php

@@ -186,6 +186,10 @@
 			"event-type" => ["event", "type"],
 			"event-nofinish" => ["event", "nofinish"],
 			"event-ignore" => ["event", "ignore"],
+			"question-id" => ["post-question", "id"],
+			"question-multiple" => ["post-question", "multiple"],
+			"question-voters" => ["post-question", "voters"],
+			"question-end-time" => ["post-question", "end-time"],
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],
@@ -212,6 +216,7 @@
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post-user`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post-user`.`uri-id`
 			LEFT JOIN `post-delivery-data` ON `post-delivery-data`.`uri-id` = `post-user`.`uri-id` AND `post-user`.`origin`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post-user`.`uri-id`
 			LEFT JOIN `permissionset` ON `permissionset`.`id` = `post-user`.`psid`
 			LEFT JOIN `post-user` AS `parent-post` ON `parent-post`.`uri-id` = `post-user`.`parent-uri-id` AND `parent-post`.`uid` = `post-user`.`uid`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`"
@@ -344,6 +349,10 @@
 			"event-type" => ["event", "type"],
 			"event-nofinish" => ["event", "nofinish"],
 			"event-ignore" => ["event", "ignore"],
+			"question-id" => ["post-question", "id"],
+			"question-multiple" => ["post-question", "multiple"],
+			"question-voters" => ["post-question", "voters"],
+			"question-end-time" => ["post-question", "end-time"],
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],
@@ -369,6 +378,7 @@
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post-thread-user`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post-thread-user`.`uri-id`
 			LEFT JOIN `post-delivery-data` ON `post-delivery-data`.`uri-id` = `post-thread-user`.`uri-id` AND `post-thread-user`.`origin`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post-thread-user`.`uri-id`
 			LEFT JOIN `permissionset` ON `permissionset`.`id` = `post-thread-user`.`psid`
 			LEFT JOIN `post-user` AS `parent-post` ON `parent-post`.`uri-id` = `post-user`.`parent-uri-id` AND `parent-post`.`uid` = `post-thread-user`.`uid`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`"
@@ -468,6 +478,10 @@
 			"causer-blocked" => ["causer", "blocked"],
 			"causer-hidden" => ["causer", "hidden"],
 			"causer-contact-type" => ["causer", "contact-type"],
+			"question-id" => ["post-question", "id"],
+			"question-multiple" => ["post-question", "multiple"],
+			"question-voters" => ["post-question", "voters"],
+			"question-end-time" => ["post-question", "end-time"],
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],
@@ -490,6 +504,7 @@
 			LEFT JOIN `verb` ON `verb`.`id` = `post`.`vid`
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post`.`uri-id`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post`.`uri-id`
 			LEFT JOIN `post` AS `parent-post` ON `parent-post`.`uri-id` = `post`.`parent-uri-id`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`"
 	],
@@ -588,6 +603,10 @@
 			"causer-blocked" => ["causer", "blocked"],
 			"causer-hidden" => ["causer", "hidden"],
 			"causer-contact-type" => ["causer", "contact-type"],
+			"question-id" => ["post-question", "id"],
+			"question-multiple" => ["post-question", "multiple"],
+			"question-voters" => ["post-question", "voters"],
+			"question-end-time" => ["post-question", "end-time"],
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],
@@ -610,6 +629,7 @@
 			LEFT JOIN `verb` ON `verb`.`id` = `post`.`vid`
 			LEFT JOIN `diaspora-interaction` ON `diaspora-interaction`.`uri-id` = `post-thread`.`uri-id`
 			LEFT JOIN `post-content` ON `post-content`.`uri-id` = `post-thread`.`uri-id`
+			LEFT JOIN `post-question` ON `post-question`.`uri-id` = `post-thread`.`uri-id`
 			LEFT JOIN `post` AS `parent-post` ON `parent-post`.`uri-id` = `post`.`parent-uri-id`
 			LEFT JOIN `contact` AS `parent-post-author` ON `parent-post-author`.`id` = `parent-post`.`author-id`"
 	],