Help with Post Meta

Question

This snippet pulls in post "industry" for the current post

$post_meta = get_post_meta( $post->ID ); 

This code pulls in all the logos for the "brands"

<?php query_posts( 'post_type=brands&orderby=title&order=ASC&posts_per_page=-1' );          
            $i = 0;
            if ( have_posts() ) while ( have_posts() ) : the_post(); ?>
                <li id="feature<?php echo $i; ?>"><a href="<?php the_permalink(); ?>" rel="<?php echo $i; ?>"><image src="<?php echo get_post_meta( $post->ID, 'brand_logo_sm', true ); ?>" /></a></li>
            <?php $i++; endwhile; wp_reset_query(); ?>

I need some help limiting the the above code to ONLY display the brands that match the "$post_meta"

If have tried:

<?php query_posts( 'post_meta=brand_industry&orderby=title&order=ASC&posts_per_page=-1' );

With not lock.

Any tips?

Thx!

Function where I declare the meta:

$brand_meta = array(
    'brand_email' => 'Email',
    'brand_url' => 'Website',
    'brand_stores' => 'Global Store Locator ID',
    'brand_gallery' => 'Gallery ID',
    'brand_products' => 'Products',
    'brand_industry' => 'Industry'
);

Answer to comment below:

This code, outputs all the logos.

<?php query_posts( 'post_type=brands&orderby=title&order=ASC&posts_per_page=-1' );          
            $i = 0;
            if ( have_posts() ) while ( have_posts() ) : the_post(); ?>
                <li id="feature<?php echo $i; ?>"><a href="<?php the_permalink(); ?>" rel="<?php echo $i; ?>"><image src="<?php echo get_post_meta( $post->ID, 'brand_logo_sm', true ); ?>" /></a></li>
            <?php $i++; endwhile; wp_reset_query(); ?>

I only want it to display the logos if the "industry" gets outputted using this code:

<?php $post_meta = get_post_meta( $post->ID ); ?>

is equal to X

Thant make sense?

Answer 1

This makes no sense, required $key argument (defines which custom field value you want to retrieve) is missing:

$post_meta = get_post_meta( $post->ID );

How are you actually assigning this to post? In this snippet you only assign array to some arbitrary variable:

$brand_meta = array(...

Also please clarify your condition, I am not sure what you mean by brands that match $post_meta.