如何从两个表创建可靠的下拉列表

Question

I have two tables "oc_t_item_car_make_attr" , "oc_t_item_car_model_attr"

So how can i make a Dependable Dropdown From these Two Tables?

Answer 1

You can only do this by Ajax.

Following is city country reference site, you can get idea from that.

Referance Site

if you stuck any where feel free to ask me.