Query Loop – dynamic posts with a specific tag via SCF (ACF)

Hi there,

Through secure custom fields I have created a field (slug selected_tag) in which I select one specific tag.

What is the custom field type? Is it a post-meta or a taxonomy? Can I have more info about it?

Then you should be able to add taxonomy parameter > selected_tag to the query block.

Not sure what you mean, here’s a screenshot for your reference:
https://app.screencast.com/1D7jRoDZjCAHU

Why not just use the default WP tag？

I don’t see an advantage of your current setup, or maybe I misunderstood your purpose.

It’s like defining a primary tag for the current post?

I don’t think there’s a way out of the box, you will need to write custom PHP to alter the query loop output.

If you are V2 GB block, then try this PHP code, and add selected-tags-posts class to the query block.

add_filter( 'generateblocks_query_wp_query_args', function( $args, $attributes ) {
    if ( ! empty( $attributes['className'] ) && strpos( $attributes['className'], 'selected-tags-posts' ) !== false ) {
        // Get the current post ID
        $post_id = get_the_ID();

        // Retrieve the selected tag(s) from the ACF field
        $selected_tag = get_field( 'selected_tag', $post_id );

        if ( $selected_tag && is_array( $selected_tag ) ) {
            // Extract tag IDs
            $tag_ids = wp_list_pluck( $selected_tag, 'term_id' );

            // Modify the query arguments to include these tags
            $args = array_merge( 
                $args, 
                [
                    'tax_query' => [
                        [
                            'taxonomy' => 'post_tag',
                            'field'    => 'term_id',
                            'terms'    => $tag_ids,
                        ],
                    ],
                ]
            );
        }
    }

    return $args;
}, 10, 2 );

You are using V1 block, are you going to update to v2? it’s now at beta 6 stage.

If not, then we need to switch to the legacy filter:

add_filter( 'generateblocks_query_loop_args', function( $query_args, $attributes ) {
    if ( ! empty( $attributes['className'] ) && strpos( $attributes['className'], 'selected-tags-posts' ) !== false ) {
        // Get the current post ID
        $post_id = get_the_ID();

        // Retrieve the selected tag(s) from the ACF field
        $selected_tag = get_field( 'selected_tag', $post_id );

        if ( $selected_tag && is_array( $selected_tag ) ) {
            // Extract tag IDs
            $tag_ids = wp_list_pluck( $selected_tag, 'term_id' );

            // Modify the query arguments to include these tags
            $query_args = array_merge( 
                $query_args, 
                [
                    'tax_query' => [
                        [
                            'taxonomy' => 'post_tag',
                            'field'    => 'term_id',
                            'terms'    => $tag_ids,
                        ],
                    ],
                ]
            );
        }
    }

    return $query_args;
}, 10, 2 );

Hi there,

Can you confirm if both GenerateBlocks and GenerateBlocks Pro versions are on V2?