Fix issue

src/helpers/groups_helper.rs

@@ -174,23 +174,26 @@ pub fn search_group(query: &str, limit: u64) -> ResultBoxError<Vec<GroupID>> {
 
 /// Get information about the membership of a user over a group
 pub fn get_membership(group_id: &GroupID, user_id: Option<UserID>) -> ResultBoxError<GroupMember> {
+    let default_membership = GroupMember {
+        id: 0,
+        user_id: 0,
+        group_id: group_id.clone(),
+        time_create: 0,
+        level: GroupMembershipLevel::VISITOR,
+        following: false,
+    };
+
     if user_id == None {
-        return Ok(GroupMember {
-            id: 0,
-            user_id: 0,
-            group_id: group_id.clone(),
-            time_create: 0,
-            level: GroupMembershipLevel::VISITOR,
-            following: false,
-        });
+        return Ok(default_membership);
     }
 
     let user_id = user_id.unwrap();
 
-    database::QueryInfo::new(GROUPS_MEMBERS_TABLE)
+    Ok(database::QueryInfo::new(GROUPS_MEMBERS_TABLE)
         .cond_group_id("groups_id", group_id)
         .cond_user_id("user_id", user_id)
         .query_row(db_to_group_member)
+        .unwrap_or(default_membership))
 }
 
 /// Get the membership level of a user for a group