codeigniter join table ss - codeigniter

Question

I have a problem with codeigniter,
I want to do a join in the addition of a carrier,
when I add I assign a truck this driver
I want the state of truck changes from 0 to 1,
but I do not know,
public function add($email, $password , $nom , $prenom , $telephone,$id_camion)
{
$query = $this->db->get_where('transporteur', array('email' => $email));
if ($query->num_rows == 1) {
return FALSE;
}
$this->db->insert('transporteur', array('email' => $email,'password' => md5($password),'nom' => $nom ,'prenom'=>$prenom ,'telephone' => $telephone,'id_camion' => $id_camion));
return TRUE;
}

Answer 1

If I understand your question correctly, now that you've inserted a new carrier you want to set some state in a table of trucks. You already have the truck ID as a parameter so in theory all you need to do is:
//update only on a given camion_id
$this->db->where('id', $camion_id);
$this->db->update('camions', array('state' => 1));
Here I assume your table is called camions, its ID is id and the state column you're trying to change from 0 to 1 is called state.
If that's not quite right, please update your question. If you have trouble translating it into english, I can help with that, too. ;)

Answer 2

I'm confused about your question but you have (num_rows should be num_rows()) following code:
if ($query->num_rows == 1) {
return FALSE;
}
It should be:
if ($query->num_rows() == 1) {
return FALSE;
}
It's a method not a property. You may also use it like this way:
if ($query->num_rows()) {
return FALSE;
}