Robson.Pi

I’m sorry Marcin – I didn’t mean that I wrote the plugin.
As I wrote in first post I’m “copy&paste” guy.
I wouldn’t be able to write something like that.

I should write that “I used” code of your plugin.
The truth is that I looked through so many posts about limiting the wp_query that I couldn’t find out who was the author of the code.

Once againt – sorry for that.
And thank You for great plugin.

While cooking dinner I thought about another vertion of filtering main loop and made solution mostly by accident 🙂
It’s how it worked for me.

In settings > reading “Front Page” as Home and “Post page” as blog.
I used Post-in-page plugin (https://ww.wp.xz.cn/plugins/posts-in-page/) pulling post from selected category on static Home.

I also made plugin:

<?php
/*
Plugin Name: Limit homepage to display a single Category
*/

add_action('wp_head', 'iworks_only_one_category');
function iworks_only_one_category()
{
    if ( is_front_page() ) {
        global $wp_query;
        $wp_query->query('cat=10');
    }

	if ( is_home() ) {
        global $wp_query;
        $wp_query->query('cat=-10');
    }
}

?>

After turning the plugin things work as I want.

I tried this plugin earlier, but when settings > reading “Front Page” was set as empty (no page was set) it didn’t work.