How do I show only posts from a specific category in the post page?

[Pichitra]

Hi Guys,

I have bought your theme. Now I have a question. I have set a ‘Post Page’ (the page that all posts run in a loop) and I want to have the posts from a certain group of categories displayed in that page. Do you know how I can do that?

For example, I have 2 categories: ‘food’ and ‘wine’. I want to show only the posts with the category ‘wine’ in the post page. How can I do that?

[Anonymous]

Hi @patricia
You can use coding approach with modifying loop codes

http://codex.wordpress.org/The_Loop#Exclude_Posts_From_Some_Category

You can also try https://wordpress.org/plugins/wp-posts-filter/

Regards
Varun Dubey

[Pichitra]

Hi @vapvarun

If I want to go for the route of using coding approach. What do I need to do? This is because the plugin you suggested is very old and I think it might crash my theme. As I am not techy, could you tell my step by step about the procedure please? For example, 1) go to the file named blah blah blah, 2) rewrite the code in this file I’m sure there are lots of users who want to know how to do it too. And if you give a clear instruction, the user can read it and follow and there’s no need to ask you again.

Regards,

Patricia

[Anonymous]

Hi @patricia

Try adding following code to child theme functions.php file

add_action('pre_get_posts', 'bb_filter_categories');
function bb_filter_categories($query) {
    if ($query->is_main_query() && is_page( 42 )) {
        $query->set('category_name','news, uncategorized');
    }
}

// When Page 42 (ID) is being displayed, you will need to replace 43 with blog page id.
news, uncategorized replace them with a comma separated list of the categories you wish to include.
Regards
Varun Dubey

[Pichitra]

Hi @vapvarun

Thank you for your reply. But it doesn’t really work. this is the code I put

 add_action('pre_get_posts', 'bb_filter_categories');
	function bb_filter_categories($query) {
    if ($query->is_main_query() && is_page( 167 )) {
        $query->set('category_name','Plastic Surgery Doctors, uncategorized');
    }
}

So the questions are

1) When I put the category name, Should it be the name or the slug?

2) I have put this code in child theme functions.php file, do I need to put <?php ?> before and after the code you gave me?

3) Is there anything wrong with my code?

4) May I use category ID instead?

Thank you!

Regards,

Patricia

[Pichitra]

Hi @vapvarun

Finally, I have figured it out how to do it! This is the code that I’m using.

 add_action('pre_get_posts', 'bb_filter_categories');
	function bb_filter_categories($query) {
    if ($query->is_main_query() && is_home) {
        $query->set('category__not_in', '10'); 
    }
}

This is because the ‘page id’ should be set as ‘is_home’ because it’s the post page. And I can choose the category that I want to exclude.

So thank you for your patience! You’re fantastic! Thank you for your great theme!

Many thanks!

Patricia

[Anonymous]

🙂 Great