[Support request] Limit display rule to Category AND Tag Together

[Heather]

As a side question – I noticed there is a display rule from Pages, is there a way to use this display rule but for a custom URL?

[Tom]

So this is your code for the Back to Blog:

<div class="back-to-blog">
<?php
if ( !has_tag( array('case-study', 'webinar') ) ) {
    echo '<a href="/blog">Back To Blog</a>';
}
?>
</div>

What’s your code for “Back to Case Studies”?

The Display Rules are only for pages/archives that WP is aware of.

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[Heather]

<div class="back-to-case-study">
<?php
if ( has_tag( 'case-study' ) ) {
    // The current post has the tag "case-study";
    echo '<a href="http://dev.indellient.com/case-studies/">Back to Case Studies</a>';
}
?>
</div>

[Tom]

What if you do this?:

<?php
$tag = isset( $_GET['tag'] ) ? true : false;

if ( $tag ) : ?>
    <div class="back-to-case-study">
        <a href="http://dev.indellient.com/case-studies/">Back to Case Studies</a>
    </div>
<?php else : ?>
    <div class="back-to-blog">
        <a href="/blog">Back To Blog</a>
    </div>
<?php endif; ?>

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[Heather]

That works! Thank you so much!

The only other thing is that I have an additional page where I need this to happen, so I have a case-study page and a webinar page. I essentially need the same thing so that the webinar pages have “back-to-webinar”. What is the rule I would add in here to allow the 3 links to show up in their respective places (case-study, webinar, blog). Is it an ifelse statement in between?

[Tom]

Can you link me to the webinar page possibly?

Let me know 🙂

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[Heather]

http://dev.indellient.com/webinar/

It is built in the same way as the case study page. So that page is a tag archive, and the categories have a url like: http://dev.indellient.com/blog/category/analytics/?tag=webinar

if you go to the categories now, it says back to case studies because of the filter, but it needs to say back to webinar.

[Tom]

Let’s try this:

<?php
$tag = isset( $_GET['tag'] ) ? true : false;

if ( $tag ) : ?>
    <?php if ( 'webinar' === $_GET['tag'] ) : ?>
        <div class="back-to-webinar">
            <a href="http://dev.indellient.com/webinar/">Back to Webinars</a>
        </div>
    <?php else : ?>
        <div class="back-to-case-study">
            <a href="http://dev.indellient.com/case-studies/">Back to Case Studies</a>
        </div>
    <?php endif; ?>
<?php else : ?>
    <div class="back-to-blog">
        <a href="/blog">Back To Blog</a>
    </div>
<?php endif; ?>

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[Heather]

This worked wonderfully! Thank you so much, everything works so much smoother now.

[Heather]

Will something like this also work for displaying posts in these areas. So since I have a dedicated page for posts with a tag of case-study and webinar, I do not want them to display on my general blog archive page.

This is fine, until you try to look at a category, and all the posts are there. For example:

/blog contains only posts that do not have a tag of case-study or webinar

/blog/category/devops will show ALL posts with a category of devops, regardless of what tags they have.

Since I already have an archive page for case-study tagged posts with a category of devops (see here), I do not want any of these posts to show up within the general archive page.

So is there a way to use this same logic but for displaying posts? Or only displaying posts if the url has the tag=case-study in it?

[Tom]

Hi there,

That would be different code. Are you only trying to exclude posts with those two tags? And they would only be excluded if you’re not viewing those specific tag archives?

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[Heather]

Well I have this code in my functions.php

//Exclude case study, event, and webinar posts from appearing in blog

	function exclude_posts( $query ) { 

		if ( $query->is_home() ) {  
	
			$query->set( 'tag__not_in', array( 182, 180, 166 ) ); 
	
		}
	} 
	
	add_action( 'pre_get_posts', 'exclude_posts' );

Those are the tag ID’s for case-study, webinar, and news. So if you go here you can see that these posts have these filtered on every page, but if you were to go to the archive page for Document Workflow Automation, the first few posts are case-studies that also appear on the Case Studies tag archive page. These category archives should still remain filtered to just show posts, in the same way that the blog archive page is filtered.

Is there a way to do this, maybe with some if / ifelse statements?

[Tom]

Hmm, maybe try this:

add_action( 'pre_get_posts', function( $query ) {
    if ( $query->is_archive( 'webinar' ) || $query->is_archive( 'case-study' ) ) {
        return $query;
    }

    if ( $query->is_archive() ) {
        $query->set( 'tag__not_in', array( 182, 180, 166 ) );
    }
} );

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Adding CSS: http://docs.generatepress.com/article/adding-css/
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[Heather]

So that worked fine, however it ended up filtering those tags even on those specialized archive pages. So for something like the case-study tag archive, when you select a category (document workflow automation link in previous post), it now shows no posts and acts like no posts with that tag exist.
Works great for the blog archive and the plain category archives, so blog/category/whatever – but it seems like it doesn’t register the query when the tag is involved, ie: all my filtered category posts for those tags are now empty across the website.

[Tom]

I just edited the code here: https://generatepress.com/forums/topic/limit-display-rule-to-category-and-tag-together/page/2/#post-1056467

Can you give it another shot?

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[Author]

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