CodeIgniter Active Record - Group OR statements - php

Question

This is my problem: MySQL "Or" Condition
The solution is to group the OR statements, but i'm using CodeIgniters Active Record. Is there a way to group OR statements using Active Record? Or do I have to write the query myself?
I'm using $this->db->where() with $this->db->or_where()
It writes the query like this:
WHERE title = 'foobar' AND category = 2 OR category = 3
but what I need is:
WHERE title = 'foobar' AND (category = 2 OR category = 3)
I can't do this:
$this->db->where("title = 'foobar' AND (category = 2 OR category = 3)");
because i'm adding ORs using a foreach loop

Answer 1

You can do it manually as stated here:
Custom string: You can write your own clauses manually:
$where = "name='Joe' AND status='boss' OR status='active'";
$this->db->where($where);
As for your question:
$this->db->where("category = 1 AND (category = 2 OR category = 3)");
In 3.0-dev:
$this->db->select()
->group_start()
->or_like([ 'category' => 2, 'category' => 3 ])
->group_end()
->where([ 'category' => 1 ]);
update
See the answers on this question if you're using CI 2.2. Choose an answer other than the accepted.
Or simply try this:
$categories = array(2, 3);
array_walk($categories, function(&$cat) { $cat = 'category = ' . $cat; });
$catstring = implode(" OR ", $categories);
$where = "category = 1 AND ($catstring)";
// => category = 1 AND (category = 2 OR category = 3)
$this->db->where($where);

Answer 2

as OP mentioned you are generating OR using foreach (array)
you can simply use
$cat_array=array(2,3,4,5,6,7);
$this->db->select('col1, col2')->from('table')->where("col1",1)->where_in('col2', $cat_array);
will generate
SELECT `col1`, `col2` FROM (`table`) WHERE `col1` = 1 AND `col2` IN (2, 3, 4, 5, 6, 7)

Answer 3

you can't manipulate ground condition query using DB active record methods (where, or_where) , i would recommond to pass as sting in where() method
$this->db->where("category = 1 AND (category = 2 OR category = 3)");

Answer 4

In the Code Igniter Version 3.0-dev you can add groups in any query using group_start and group_end :
$this->db->select('col1, col2')
->where("category = 1")
->group_start()
->where("category = 2")
->or_where("category = 3")
->group_end();
Produces:
SELECT `col1`, `col2`
FROM `table_name`
WHERE category = 1 AND (category = 2 OR category = 3);