如何使用分页实现目录

Question

I'm working on a catalog with pagination, I'm redirecting all my requests to an index file and making friendly urls from there,

my catalog has some filters to search products, when you apply some filters and then get into a product and click the back button in the browser, it goes to the catalog page and loses all the previously applied filters.

I get the filter parameters through javascript and I send them through ajax via POST to my php controller.

How should I correctly implement this??

Answer 1

You need to grab the amount of data to filter, and in ajax you ll provide the boundaries on this pool.

lets say an example : with a pool of 75 data rows, 30 results per page. first you have to calculate your amount of pages, here ceil(75/30), so here you got 3 pages.

if you are on page 1 and you display the results 1 to 30. You have to calculate the begining of your dataset, here 1 : ( (current_page-1)x number of result +1) so 0 x 30 +1

on click on next page, you have to provide content for the second page, it means starting from (2-1)x30 + 1 : 31

Last page, you start from (3-1)x30 + 1 : 61

each time you have to clear your data displayed on the js callback and display the new array you just got.

Hope it is clear.

Answer 2

您可以将过滤器保存在Cookie中一小段时间。