在JOIN子句之后指定WHERE子句-Active Record-CodeIgniter

Question

I wanted to ask is it possible to specify a where clause after a join in order to match data to a users input. Say for example I have the following code:

 $this->db->select('user.*,role.*')
  $this->db->from('user');
  $this->db->where('user.username', $username);
  $this->db->where('user.password', $password);
  $this->db->join('role','role.id = user.role_id')
  $result = $this->db->get();

and I want to query the matching data from the table 'role':

 $this->db->select('user.*,role.*')
  $this->db->from('user');
  $this->db->where('user.username', $username);
  $this->db->where('user.password', $password);
  $this->db->join('role','role.id = user.role_id')
  $this->db->where('role.speaker', $speaker); //want to know if this is correct
  $result = $this->db->get();

Is this possible? Can I compare results (using WHERE) after a JOIN? Will that produce results matching to the WHERE clause?

Thanks!

Answer 1

CodeIgniter doesn't actually build the query until ->get() is called. You can call the methods in whatever order you want.

Answer 2

    $this->db->select(array('tbl_board_type_details.id','tbl_board_type_details.price','tbl_bord_type.bord_type_name'));
    $this->db->from(array('tbl_board_type_details'));
    $this->db->join('tbl_bord_type','tbl_bord_type.id=tbl_board_type_details.board_type_id');
    $this->db->where('tbl_board_type_details.hotel_id', $id);
    $query = $this->db->get();
    $boardtype_result =  $query->result();
    $data['boardtype_result'] = $boardtype_result;

You can try this code. It's working fine ..