Codeigniter Active Record 'where_or' group

问题:

Is it possible to group and_where / or_where / or_like... statements together so as not to mix with other and/where statements.

Something that would result in

WHERE city = 'My City' AND state = 'My State' AND (name LIKE %name1% OR name LIKE %name2%)

回答1:

Yes. $this->db->where() allows you to write clauses manually. You could do this:

$this->db->where('city', 'My City');
$this->db->where('state', 'My State');
$this->db->where('(name LIKE %name1% OR name LIKE %name2%)', null, false);

Setting the third parameter for false prevents CodeIgniter from trying to add backticks to the clause.

Check out the Active Record documentation. The section titled $this->db->where(); explains the four methods you can use to set WHERE clauses.

回答2:

I know this is a little late, but I found this post when looking into it and found a better solution than the one proposed by Sean.

$name = 'Bob';

$this->db->where('city', 'My City');
$this->db->where('state', 'My State');
$this->db->group_start();
    $this->db->like('name', $name);
    $this->db->or_like('name', $name);
$this->db->group_end();

回答3:

These two functions group_start() and group_end() have been implemented in CodeIgniter 3.0.3. Here is little better implementation according to the original question.

$name1 = 'Bob';
$name2 = 'John';

$this->db->where('city', 'My City');
$this->db->where('state', 'My State');
$this->db->group_start();
$this->db->like('name', $name1);
$this->db->or_like(('name', $name2);
$this->db->group_end();