my taxonomy-$taxonomy.php page post not show? - php

Question

I created a custom post taxonomy.Now i want to show all specific post by specific taxonomy. so I created a taxonomy-product_cat.php page.
here is product page get term and link code--
<div class="side_box side_box_1 red5">
<h5>Filter Products</h5>
<h6>Brand</h6>
<?php $topics = get_terms('product_cat');
echo '<ul class="advanced-filters tgl_c">';
foreach ($topics as $topic) {
echo '<li class="advanced-filter" data-group="Brand">'.$topic->name.'</li>';
}
echo '</ul>';?>
</div>
here is custom post taxonomy code---
function product_taxonomy() {
register_taxonomy(
'product_cat', //The name of the taxonomy. Name should be in slug form (must not contain capital letters or spaces).
'product', //post type name
array(
'hierarchical' => true,
'label' => 'product Category', //Display name
'query_var' => true,
'show_admin_column' => true,
'rewrite' => array(
'slug' => 'product-category', // This controls the base slug that will display before each term
'with_front' => false // Don't display the category base before
)
)
);
}
add_action( 'init', 'product_taxonomy');
And here is taxonomy-product_cat.php page code--
<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); $unique = "_product_"; ?>
<div class="col-md-3 col-xs-6 element mb30">
<div class="main_box">
<div class="box_1">
<div class="product-image">
<a href="<?php the_permalink(); ?>">
<?php the_post_thumbnail( $post->ID, 'product-image',array('class' => 'img-responsive') );?>
</a>
</div>
<div class="overlay hidden-sm hidden-xs">
More Info
</div>
</div>
<div class="desc">
<h5><?php the_title(); ?></h5>
<p><?php echo get_post_meta(get_the_ID(),$unique.'brand_name',true); ?></p>
</div>
</div>
</div>
<?php endwhile; ?>
<?php else :?>
<h3><?php _e( 'Not Found Any Product.' ); ?></h3>
<?php endif ?>
But the result is Not Found Any Product.So please someone help me how can i fix this problem.Thanks

Answer 1

see documentation
https://developer.wordpress.org/reference/functions/get_terms/
specifically
Since 4.5.0, taxonomies should be passed via the ‘taxonomy’ argument in the $args array:
$terms = get_terms( array(
'taxonomy' => 'post_tag',
'hide_empty' => false,
) );
instead of the first parameter being the taxonomies.
get_terms('product_cat');
You should do
get_terms(array(
'taxonomy' => 'product_cat'
));
Not sure if that is the issue, but seems the most obvious thing.
UPDATE
Did you try this
get_terms(array(
'taxonomy' => 'product_cat',
'hide_empty' => 0
));
This will show the taxonomy if you didn't insert any actual terms with
wp_insert_term()
As per this page,
https://wordpress.org/support/topic/get_terms-does-not-return-my-custom-taxonomy-terms
I don't typically work with WP on this level, but my google skills are unmatched ... lol