Issue/1508 pagination

fuel/app/classes/controller/api/admin.php

@@ -69,13 +69,20 @@ public function post_user($user_id)
 		return \Service_User::update_user($user_id, $user);
 	}
 
-	public function get_widget_search(string $input)
+	public function get_instance_search(string $input, string $page_number)
 	{
 		$input = trim($input);
 		$input = urldecode($input);
+		$page_number = (int) $page_number;
 		//no need to search if for some reason an empty string is passed
-		if ($input == '') return [];
-		return \Materia\Widget_Instance_Manager::get_search($input);
+		if ($input == '')
+		{
+			return [
+				'pagination' => [],
+				'next_page'  => $page_number
+			];
+		}
+		return \Materia\Widget_Instance_Manager::get_paginated_instance_search($input, $page_number);
 	}
 
 	public function get_extra_attempts(string $inst_id)

fuel/app/classes/materia/api/v1.php

@@ -64,10 +64,10 @@ static public function widget_instances_get($inst_ids = null, bool $deleted = fa
  *
  * @return array of objects containing total_num_pages and widget instances that are visible to the user.
  */
-	static public function widget_paginate_instances_get($page_number = 0)
+	static public function widget_paginate_user_instances_get($page_number = 0)
 	{
 		if (\Service_User::verify_session() !== true) return Msg::no_login();
-		$data = Widget_Instance_Manager::get_paginated_for_user(\Model_User::find_current_id(), $page_number);
+		$data = Widget_Instance_Manager::get_paginated_instances_for_user(\Model_User::find_current_id(), $page_number);
 		return $data;
 	}
 
@@ -886,23 +886,39 @@ static public function semester_date_ranges_get()
 		return Utils::get_date_ranges();
 	}
 
-	static public function users_search($search)
+	/**
+	 * Paginated search for users that match input
+	 *
+	 * @param string Search query
+	 * @param string Page number
+	 * @return array List of users
+	 */
+	static public function users_search($input, $page_number = 0)
 	{
 		if (\Service_User::verify_session() !== true) return Msg::no_login();
 
-		$user_objects = \Model_User::find_by_name_search($search);
-		$user_arrays = [];
+		$items_per_page = 50;
+		$offset = $items_per_page * $page_number;
+
+		// query DB for only a single page + 1 item
+		$displayable_items = \Model_User::find_by_name_search($input, $offset, $items_per_page + 1);
+
+		$has_next_page = sizeof($displayable_items) > $items_per_page ? true : false;
+
+		if ($has_next_page) array_pop($displayable_items);
 
-		// scrub the user models with to_array
-		if (count($user_objects))
+		foreach ($displayable_items as $key => $person)
 		{
-			foreach ($user_objects as $key => $person)
-			{
-				$user_arrays[$key] = $person->to_array();
-			}
+			$displayable_items[$key] = $person->to_array();
 		}
 
-		return $user_arrays;
+		$data = [
+			'pagination' => $displayable_items,
+		];
+
+		if ($has_next_page) $data['next_page'] = $page_number + 1;
+
+		return $data;
 	}
 	/**
 	 * Gets information about the current user

fuel/app/classes/materia/widget/instance/manager.php

@@ -14,7 +14,7 @@ static public function get($inst_id, $load_qset=false, $timestamp=false, $delete
 		return count($instances) > 0 ? $instances[0] : false;
 	}
 
-	static public function get_all(Array $inst_ids, $load_qset=false, $timestamp=false, bool $deleted=false): array
+	static public function get_all(Array $inst_ids, $load_qset=false, $timestamp=false, bool $deleted=false, $offset=0, $limit=80): array
 	{
 		if ( ! is_array($inst_ids) || count($inst_ids) < 1) return [];
 
@@ -27,6 +27,9 @@ static public function get_all(Array $inst_ids, $load_qset=false, $timestamp=fal
 			->where('id', 'IN', $inst_ids)
 			->and_where('is_deleted', '=', $deleted ? '1' : '0')
 			->order_by('created_at', 'desc')
+			->order_by('id', 'desc')
+			->offset("$offset")
+			->limit("$limit")
 			->execute()
 			->as_array();
 
@@ -63,7 +66,7 @@ public static function get_all_for_user($user_id, $load_qset=false)
 	{
 		$inst_ids = Perm_Manager::get_all_objects_for_user($user_id, Perm::INSTANCE, [Perm::FULL, Perm::VISIBLE]);
 
-		if ( ! empty($inst_ids)) return Widget_Instance_Manager::get_all($inst_ids, $load_qset);
+		if ( ! empty($inst_ids)) return self::get_all($inst_ids, $load_qset);
 		else return [];
 	}
 
@@ -76,22 +79,25 @@ public static function get_all_for_user($user_id, $load_qset=false)
  *
  * @return array of widget instances that are visible to the user.
  */
-	public static function get_paginated_for_user($user_id, $page_number = 0)
+	public static function get_paginated_instances_for_user($user_id, $page_number = 0)
 	{
 		$inst_ids = Perm_Manager::get_all_objects_for_user($user_id, Perm::INSTANCE, [Perm::FULL, Perm::VISIBLE]);
-		$displayable_inst = self::get_all($inst_ids);
-		$widgets_per_page = 80;
-		$total_num_pages = ceil(sizeof($displayable_inst) / $widgets_per_page);
-		$offset = $widgets_per_page * $page_number;
-		$has_next_page = $offset + $widgets_per_page < sizeof($displayable_inst) ? true : false;
 
-		// inst_ids corresponds to a single page's worth of instances
-		$displayable_inst = array_slice($displayable_inst, $offset, $widgets_per_page);
+		$items_per_page = 80;
+		$offset = $items_per_page * $page_number;
+
+		// query DB for only a single page of instances + 1
+		$displayable_items = self::get_all($inst_ids, false, false, false, $offset, $items_per_page + 1);
+
+		// if the returned number of instances is greater than a page, there's more pages
+		$has_next_page = sizeof($displayable_items) > $items_per_page ? true : false;
+
+		if ($has_next_page) array_pop($displayable_items);
 
 		$data = [
-			'pagination' => $displayable_inst
+			'pagination' => $displayable_items
 		];
-		
+
 		if ($has_next_page) $data['next_page'] = $page_number + 1;
 
 		return $data;
@@ -135,20 +141,55 @@ public static function lock($inst_id)
 		return $locked_by == $me;
 	}
 
+	/**
+	 * Widget instance paginated search results
+	 *
+	 * @param input search input
+	 * @param page_number page number
+	 *
+	 * @return array of items related to the given input
+	 */
+	public static function get_paginated_instance_search(string $input, $page_number = 0)
+	{
+		$items_per_page = 80;
+		$offset = $items_per_page * $page_number;
+
+		// query DB for only a single page of instances + 1
+		$displayable_items = self::get_widget_instance_search($input, $offset, $items_per_page + 1);
+
+		// if the returned number of instances is greater than a page, there's more pages
+		$has_next_page = sizeof($displayable_items) > $items_per_page ? true : false;
+
+		if ($has_next_page) array_pop($displayable_items);
+
+		$data = [
+			'pagination' => $displayable_items,
+		];
+
+		if ($has_next_page) $data['next_page'] = $page_number + 1;
+
+		return $data;
+	}
+
 	/**
 	 * Gets all widget instances related to a given input, including id or name.
 	 *
 	 * @param input search input
+	 * @param offset start search at this row in results
+	 * @param limit number of rows to include
 	 *
 	 * @return array of widget instances related to the given input
 	 */
-	public static function get_search(string $input): array
+	public static function get_widget_instance_search(string $input, int $offset = 0, int $limit = 80): array
 	{
 		$results = \DB::select()
 			->from('widget_instance')
 			->where('id', 'LIKE', "%$input%")
 			->or_where('name', 'LIKE', "%$input%")
 			->order_by('created_at', 'desc')
+			->order_by('id', 'desc')
+			->offset($offset)
+			->limit($limit)
 			->execute()
 			->as_array();
 

fuel/app/classes/model/user.php

@@ -87,7 +87,7 @@ public static function find_by_username($username)
 			->get_one();
 	}
 
-	static public function find_by_name_search($name)
+	static public function find_by_name_search($name, $offset = 0, $limit=80)
 	{
 		$name = preg_replace('/\s+/', '', $name); // remove spaces
 
@@ -108,11 +108,19 @@ static public function find_by_name_search($name)
 				->or_where(\DB::expr('REPLACE(CONCAT(first, last), " ", "")'), 'LIKE', "%$name%")
 				->or_where('email', 'LIKE', "$name%")
 			->and_where_close()
-			->limit(50)
+			->offset($offset)
+			->limit($limit)
 			->as_object('Model_User')
 			->execute();
 
-		return $matches;
+		// convert object to array
+		$list = [];
+		foreach ($matches as $match)
+		{
+			$list[] = $match;
+		}
+
+		return $list;
 	}
 
 	public static function validate($factory)

fuel/app/tests/api/v1.php

@@ -180,9 +180,32 @@ public function test_widget_instances_get()
 
 	}
 
-	public function test_widget_paginate_instances_get()
+	public function test_widget_paginate_user_instances_get()
 	{
+		// Create widget instance
+		$this->_as_author();
+		$title = "My Test Widget";
+		$question = 'What rhymes with harvest fests but are half as exciting (or tasty)';
+		$answer = 'Tests';
+		$qset = $this->create_new_qset($question, $answer);
+		$widget = $this->make_disposable_widget();
+
+		$instance = Api_V1::widget_instance_new($widget->id, $title, $qset, true);
+
+		// ----- loads author's instances --------
+		$output = Api_V1::widget_paginate_user_instances_get();
+		$this->assertIsArray($output);
+		$this->assertArrayHasKey('pagination', $output);
+		foreach ($output['pagination'] as $key => $value)
+		{
+			$this->assert_is_widget_instance($value, true);
+		}
 
+		// ======= AS NO ONE ========
+		\Auth::logout();
+		// ----- returns no login --------
+		$output = Api_V1::widget_paginate_user_instances_get();
+		$this->assert_invalid_login_message($output);
 	}
 
 	public function test_widget_instance_new()
@@ -1024,10 +1047,6 @@ public function test_play_logs_get()
 
 	}
 
-	public function test_paginated_play_logs_get()
-	{
-	}
-
 	public function test_score_summary_get()
 	{
 		// ======= AS NO ONE ========
@@ -1522,10 +1541,10 @@ public function test_users_search_as_student()
 
 		$output = Api_V1::users_search('droptables');
 		$this->assertIsArray($output);
-		$this->assertCount(2, $output);
-		$this->assert_is_user_array($output[0]);
-		$this->assertFalse(array_key_exists('password', $output));
-		$this->assertFalse(array_key_exists('login_hash', $output));
+		$this->assertIsArray($output['pagination']);
+		$this->assert_is_user_array($output['pagination'][0]);
+		$this->assertFalse(array_key_exists('password', $output['pagination']));
+		$this->assertFalse(array_key_exists('login_hash', $output['pagination']));
 	}
 
 	public function test_users_search_as_author()
@@ -1538,10 +1557,10 @@ public function test_users_search_as_author()
 
 		$output = Api_V1::users_search('droptables');
 		$this->assertIsArray($output);
-		$this->assertCount(2, $output);
-		$this->assert_is_user_array($output[0]);
-		$this->assertFalse(array_key_exists('password', $output));
-		$this->assertFalse(array_key_exists('login_hash', $output));
+		$this->assertIsArray($output['pagination']);
+		$this->assert_is_user_array($output['pagination'][0]);
+		$this->assertFalse(array_key_exists('password', $output['pagination']));
+		$this->assertFalse(array_key_exists('login_hash', $output['pagination']));
 	}
 
 	public function test_users_search_as_super_user()
@@ -1554,10 +1573,10 @@ public function test_users_search_as_super_user()
 
 		$output = Api_V1::users_search('droptables');
 		$this->assertIsArray($output);
-		$this->assertCount(2, $output);
-		$this->assert_is_user_array($output[0]);
-		$this->assertFalse(array_key_exists('password', $output[0]));
-		$this->assertFalse(array_key_exists('login_hash', $output[0]));
+		$this->assertIsArray($output['pagination']);
+		$this->assert_is_user_array($output['pagination'][0]);
+		$this->assertFalse(array_key_exists('password', $output['pagination']));
+		$this->assertFalse(array_key_exists('login_hash', $output['pagination']));
 	}
 
 	protected function assert_is_semester_rage($semester)