Can get and return following state of a user.

RestControllers/GroupsController.php

@@ -116,11 +116,17 @@ class GroupsController {
 		if(!$group->isValid())
 			Rest_fatal_error(404, "The requested group was not found !");
 		
-		//If the user is signed in, check whether he is liking or not the group
+		//If the user is signed in, check whether he is liking and following or not the group
-		if(userID > 0)
+		if(userID > 0) {
 			$group->setLiking(components()->likes->is_liking(
 				userID, $group->get_id(), Likes::LIKE_GROUP));
 
+			
+			$group->set_following(components()->groups->isFollowing(
+				userID, $group->get_id()
+			));
+		}
+
 		//Parse and return information about the group
 		return self::AdvancedGroupInfoToAPI($group);
 	}
@@ -638,6 +644,7 @@ class GroupsController {
 		$data["registration_level"] = self::GROUPS_REGISTRATION_LEVELS[$info->get_registration_level()];
 		$data["posts_level"] = self::GROUPS_POSTS_LEVELS[$info->get_posts_level()];
 		$data["virtual_directory"] = $info->get_virtual_directory();
+		$data["following"] = $info->isFollowing();
 
 		return $data;
 	}

classes/components/GroupsComponent.php

@@ -431,6 +431,21 @@ class GroupsComponent {
 		return $this->dbToGroupMember($results[0]);
 	}
 
+	/**
+	 * Determine whether a user is following or not a group
+	 * 
+	 * @param int $userID Target user ID
+	 * @param int $groupID The ID of the related group
+	 * @return bool TRUE if the user is following the group / FALSE else
+	 */
+	public function isFollowing(int $userID, int $groupID) : bool {
+		return db()->count(
+			self::GROUPS_MEMBERS_TABLE,
+			"WHERE groups_id = ? AND user_ID = ? AND following = 1",
+			array($groupID, $userID)
+		) > 0;
+	}
+
 	/**
 	 * Check whether a user is an administrator of a group
 	 * or not
@@ -751,6 +766,7 @@ class GroupsComponent {
 		$member->set_userID($entry["user_id"]);
 		$member->set_time_sent($entry["time_create"]);
 		$member->set_level($entry["level"]);
+		$member->set_following($entry["following"] == 1);
 
 		return $member;
 

classes/models/GroupInfo.php

@@ -41,6 +41,7 @@ class GroupInfo extends BaseUniqueObject {
 	private $registration_level = -1;
 	private $posts_level = -1;
 	private $virtual_directory;
+	private $following = FALSE;
     
     //Get and set the name of group
     public function set_name(string $name){
@@ -160,4 +161,13 @@ class GroupInfo extends BaseUniqueObject {
 	public function get_virtual_directory() : string {
 		return $this->virtual_directory != null ? $this->virtual_directory : "null";
 	}
+
+	//Set and get following status
+	public function set_following(bool $following){
+		$this->following = $following;
+	}
+	
+	public function isFollowing() : bool {
+		return $this->following;
+	}
 }

classes/models/GroupMember.php

@@ -20,6 +20,7 @@ class GroupMember extends BaseUniqueObjectFromUser {
     //Private fields
     private $group_id = 1;
 	private $level = -1;
+	private $following;
 
     //Set and get group id
     public function set_group_id(int $group_id){
@@ -46,4 +47,13 @@ class GroupMember extends BaseUniqueObjectFromUser {
 	public function get_level() : int {
 		return $this->level;
 	}
+
+	//Set and get following status
+	public function set_following(bool $following){
+		$this->is_following = $following;
+	}
+	
+	public function isFollowing() : bool {
+		return $this->is_following;
+	}
 }