如何使用json值在codeigniter where子句中获取记录

Question

My question is in my table stored json encoded values like field Name : offer_promotion

 [{"name":"sample promotion","price":"1555","expdate":"2017-05-15","shortdesc":"test","longdesc":"test"}]

Now i want to write query for select records like, For eaxmple:

$this->db->where('offer_promotion', "name":"sample promotion");

How to write this query?

Answer 1

json in database works as a simple string. So you have to apply logic similar as string. You can use Like

$this->db->like('offer_promotion', '%"name":"sample promotion"%');

Answer 2

1. $some = json_decode($json);
2. $this->db->where('offer_promotion',$some['name']);