确定CodeIgniter活动记录是否设置了WHERE子句

Question

Sooo! Well, the title should say most of it. Are there any way to check if $this->db-where('stuff', $data) has been set previously?

I could go out and make a bunch of testing of my own code (flags ect...), but I would like to know if anyone has knowledge of some fast and easy way to do it!

Thanks in advance!

[EDIT - 24-Apr-14] It's my own code. I have to variable that can be null , String or an array . They are $categories and $budget . So if budget is set to 100$ and category is set to stuff then I will need to use db->or_where , but if only one of them is set, I need only to use db->where . In this case it is quite simple just to check if first is set, but what if more values are used? I hope you get the point :)

Answer 1

Yes you can easily determine whether a where clause is set or not. In CodeIgniter the Active Record class stores the wheres in an array called ar_where . You can use this array to determine if any where clauses are set or not.

For example check the following code snippet :

$this->db->select()
            ->from("foo")
            ->where('bar',NULL);

        $this->db->or_where('xyz',NULL);

        print_r(sizeof($this->db->ar_where));

The following will output a value of 2 . So you can use this array to check for your result.