Codeigniter 4 - WHERE clause in Model - sql

Question

It's me again, Van.
Hi everyone,
I hope you're doing well!
I am doing a tutorial on a chat application using Codeigniter 4 with Ajax.
Everything worked fine until I applied the following code in the Model below
public function load_chat_data($sender_id,$receiver_id) {
// $where = ['sender_id' => $sender_id, 'receiver_id' => $receiver_id];
$where1 = "sender_id = $sender_id OR sender_id = $receiver_id";
$where2 = "receiver_id = $receiver_id OR receiver_id = $sender_id";
$builder = $this->db->table('chat_messages');
// $builder->where($where);
$builder->where($where1);
$builder->where($where2);
$builder->orderBy('chat_messages_id','ASC');
$results = $builder->get();
$rows = $results->getResultArray();
if($rows > 0)
{
return $rows;
}
else
{
return false;
}
}
The lines that I commented worked well before they were commented but it was not enough data I wanted to get so I tried to get both data of sender and receiver to display on the view by adding more code. However, when I tried $where1 and $where2 for the WHERE clauses, it didn't work. I think it must be the syntax error. Please correct my codes or any ideas on how the codes work with the same meaning supposed.
Thank you so much!!!
I tried as below, but it still didn't work.
$where1 = "sender_id={$sender_id} OR sender_id={$receiver_id}";
$where2 = "receiver_id={$receiver_id} OR receiver_id={$sender_id}";
Also, I tried:
$where1 = "'sender_id'=$sender_id OR 'sender_id'=$receiver_id";
$where2 = "'receiver_id'=$receiver_id OR 'receiver_id'=$sender_id";

Answer 1

I think you are trying to receive the messages of the conversation between two people. Can you try the following code for this?
$builder->groupStart(); // or $builder->orGroupStart();
$builder->where('sender_id', $sender_id);
$builder->where('receiver_id', $receiver_id);
$builder->groupEnd();
$builder->orGroupStart();
$builder->where('sender_id', $receiver_id);
$builder->where('receiver_id', $sender_id);
$builder->groupEnd();