Question

In my CakePHP (1.2) app, I have two actions that both use pagination – index and search.

In a previous question I learnt that, in order to apply a threshold score to search results, I need to use the HAVING MySQL keyword. Since CakePHP does not support this natively, I need to drop down to a custom query in order to accomplish this.

All the guides I can find to custom query pagination involve overriding the paginate() and paginateCount() methods.

Since I still want to be able to paginate normally on the index however, I don’t want to change the normal pagination behaviour in the model.

Is there any way I can (ahem) have my Cake and eat it too?

Answer 1

Actually if you CAN do it with find you CAN do it with paginate. You can take a look here

But to be more especific you can add the conditions/limit/fields/contain/order etc that you use in find to the paginate function.

I haven’t use group in the paginate but it SHOULD work 😀

In your case you will have something like this:

$this->paginate = array(
   'fields' => array(
        'Product.category_id',
        'COUNT(Product.hotel_id) as total'
    ),
   'group' => array(
        'Product.category_id HAVING COUNT(Product.hotel_id) > 1')
    )
);

$data = $this->paginate('Product');

Hope it works, post a comment of your result, if it doesn’t work you will have to override it, because it is not accepting the group condition… though I think it will work since pagination is a find in the end.

EDIT:

You may try to do something like this:

Override the paginate() and paginateCount() but with a tweak, sneak a condition so you can tell if its a pagination with having or not. Something like this:

function paginate($conditions, $fields, $order, $limit, $page = 1, $recursive = null, $extra = array()){
   //if no having conditions set return the parent paginate 
   if (empty($conditions['having'])
       return parent::paginate($conditions, $fields, $order, $limit, $page, $recursive, $extra)
   //if having conditions set return your override

//override code here

}

Then you do something similar in paginateCount(), that way you have a selective paginate. remember to do unset $conditions[‘having’] once it is not needed or remember to put it somewhere that doesn’t affect your find 😉