Show Custom Post based on selected custom taxonomy in Wordpress - wordpress

Question

In the current website i am building i build the following functionality.
Current situation to give a better understanding of the problem.
There is a page called blog. This page display's all the blogs (posts) in a list. There is a aside with all the categories the posts have. The user can select a category. Once the user clicks on it the user will go to the category.php and see all the posts that have that specific category.
I want to create the same scenario but than with a custom post type. I have a template part; 'offer-list-template.php'
offer-list-template.php (here i get all the offers and display them);
<?php
// set up or arguments for our custom query
$paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
$query_args = array(
'post_type' => 'Offers',
'posts_per_page' => 10,
'paged' => $paged
);
// create a new instance of WP_Query
$the_query = new WP_Query( $query_args );
?>
<?php if ( $the_query->have_posts() ) : while ( $the_query->have_posts() ) : $the_query->the_post(); // run the loop ?>
<?php
//$objectData is used in post-listing-item.php
$objectData->title = get_the_title($post);
$objectData->content = get_the_content($post);
$objectData->permalink = get_the_permalink($post);
$objectData->thumbnail = get_the_post_thumbnail($post);
$objectData->posttype = get_post_type($post);
include(locate_template('template-parts/post-listing-item.php'));
?>
<?php endwhile; ?>
In the same file there is the aside which shows the categories. offer_category is the taxonomy slug.
<?php $terms = get_terms( 'offer_category' );
foreach ( $terms as $term ) {
// The $term is an object, so we don't need to specify the $taxonomy.
$term_link = get_term_link( $term );
// If there was an error, continue to the next term.
if ( is_wp_error( $term_link ) ) {
continue;
}
// We successfully got a link. Print it out.
echo '<li>' . $term->name . '<span>('. $term->count . ')</span></li>';
}
?>
</ul
The result is:
If the user clicks on the categorie it goes to: taxonomy-offer-category.php (taxonomy-slug.php)
Here i need to display the posts (post_type->offers) that have the selected category.
Registration of the custom post type:
//Register Custom post type for Offers.
function create_posttype_offer() {
$args = array(
'labels' => array(
'name' => __('Offers', ''),
'singular_name' => __('Offer'),
'all_items' => __('All Offers'),
'add_new_item' => __('Add New Offer'),
'edit_item' => __('Edit Offer'),
'view_item' => __('View Offer')
),
'public' => true,
'has_archive' => true,
'rewrite' => array('slug' => 'Offers'),
'show_ui' => true,
'show_in_menu' => true,
'show_in_nav_menus' => true,
'capability_type' => 'page',
'supports' => array('title', 'editor', 'thumbnail'),
'exclude_from_search' => true,
'menu_position' => 70,
'has_archive' => true,
'menu_icon' => 'dashicons-star-filled'
);
register_post_type('Offers', $args);
}
add_action( 'init', 'create_posttype_offer');
// Register Custom Categoeries for Custom Post Type Offers
function taxonomies_offer() {
$labels = array(
'name' => _x( 'Categories', 'taxonomy general name' ),
'singular_name' => _x( 'Category', 'taxonomy singular name' ),
'search_items' => __( 'Search Categories' ),
'all_items' => __( 'All Categories' ),
'parent_item' => __( 'Parent Category' ),
'parent_item_colon' => __( 'Parent Category:' ),
'edit_item' => __( 'Edit Category' ),
'update_item' => __( 'Update Category' ),
'add_new_item' => __( 'Add New Category' ),
'new_item_name' => __( 'New Category' ),
'menu_name' => __( 'Categories' ),
);
$args = array(
'labels' => $labels,
'hierarchical' => true,
);
register_taxonomy( 'offer_category', 'offers', $args );
}
add_action( 'init', 'taxonomies_offer', 0 );
When i use the default post type and i call category.php which has the following code is will display the posts with the selected category. But with a custom post type i can't find a way to manage it.
<?php if (have_posts() ) : while ( have_posts() ) : the_post(); // run the loop ?>
<?php
//$objectData is used in post-listing-item.php
$objectData->title = get_the_title($post);
$objectData->content = get_the_content($post);
$objectData->permalink = get_the_permalink($post);
$objectData->thumbnail = get_the_post_thumbnail($post);
$objectData->posttype = get_post_type($post);
include(locate_template('template-parts/post-listing-item.php'));
?>
<?php endwhile; ?>
This is the post-listing-item (view)
<article class="post-item">
<figure>
<?php echo $objectData->thumbnail ?>
</figure>
<div class="content">
<a href="<?php echo $objectData->permalink ?>">
<h2><?php echo $objectData->title ?></h2>
</a>
<p><?php echo $objectData->content ?></p>
<div class="read-more-button">
<a href="<?php echo $objectData->permalink ?>">read more
<span>
<svg class="next-arrow"><use xlink:href="#next-arrow" /></svg>
</span>
</a>
</div>
</div>
</article>

Answer 1

By understanding, you have to have a query for having all the custom taxonomy post to load by the following code:
$terms = get_terms(
array(
'taxonomy' => 'offer_category',
'hide_empty' => false,
)
);
foreach ($terms as $term){
$args = array(
'post_type' => 'Offers',
'tax_query' => array(
array(
'taxonomy' => 'offer_category',
'field' => 'slug',
'terms' => $term->slug,
),
),
);
$query = new WP_Query($args);
if($query->have_posts()): while($query->have_posts()): $query->the_post();
the_title();
the_content();
endwhile;
wp_reset_postdata();
endif;
}
Hope this works for you

Answer 2

I found it!
I got the taxonomy and slug from the url and used that in the query.
<?php
$term_slug = get_query_var( 'term' );
$taxonomyName = get_query_var( 'taxonomy' );
$the_query = new WP_Query( array(
'post_type' => 'offers',
'tax_query' => array(
array (
'taxonomy' => $taxonomyName,
'field' => 'slug',
'terms' => $term_slug,
)
),
));
?>
<ul>
<?php while($the_query->have_posts()) : $the_query->the_post(); ?>
<li><?php the_title(); ?></li>
<?php endwhile; wp_reset_query(); ?>
</ul>