victorfliks

i’ve found a solution

i’ve added this into function.php

function my_post_queries( $query ) {
	  // do not alter the query on wp-admin pages and only alter it if it's the main query
	  if (!is_admin() && $query->is_main_query()){

		// alter the query for the home and category pages 

		if(is_home()){
		  $query->set('posts_per_page', 1); // changed from 3 to 1...
		}

		if(is_category()){
		  $query->set('posts_per_page', 3);
		}

	  }
	}
	add_action( 'pre_get_posts', 'my_post_queries' );

now i can switch into diffrent page without error, but there are some downside..

because i’m using it on index.php, if i set the $query->set('posts_per_page', 1); i can open page up to ‘www.example.com/page/12’ that means that in index.php i’ve outputed 12 post…

so for my solution…

first if anyone using pagination on index.php add this on function.php

function my_post_queries( $query ) {
	  // do not alter the query on wp-admin pages and only alter it if it's the main query
	  if (!is_admin() && $query->is_main_query()){

		// alter the query for the home pages 

		if(is_home()){
                  $query->set('cat','2') // this means select all post from category ID 2...
		  $query->set('posts_per_page', 1); // this means set maximum post outputted on index.php

                  // basic calculation how many pages generated: if on category ID 2  you have 4 post, that means 4 / 1(from posts_per_page) equal to 4 pages generated...

		}

	  }
	}
	add_action( 'pre_get_posts', 'my_post_queries' );

on index.php use the keesiemeijer method by using wp_query…

and thats all..

hope this is the best method for me, and fell free if you have another suggestion regarding pagination…

thank you so much for keesiemeijer for helping me…. 😀

ow yeah, i forgot to tell, that this code is in index.php i dont using page templates on this one…..