Wordpress two loop exclude post - wordpress

Question

I am using two loop query:
<?php
// show all coupons marked Top Coupon
query_posts(array(
'post_type' => APP_POST_TYPE,
'post_status' => 'publish',
'meta_key' => 'clpr_topcoupon',
'meta_value'=> 1,
APP_TAX_STORE => $term->slug,
'ignore_sticky_posts' => 1,
'posts_per_page' => 1
));
?>
<?php get_template_part( 'loop3', 'coupon' ); ?>
<?php
query_posts( array(
'post_type' => APP_POST_TYPE,
'post_status' => 'publish',
APP_TAX_STORE => $term->slug,
'ignore_sticky_posts' => 1,
'posts_per_page' => -1,
'meta_query' => array(
'relation' => 'OR',
array(
'key' => 'clpr_excoupon',
'compare' => 'NOT EXISTS'
),
array(
'key' => 'clpr_excoupon',
'compare' => '!=',
'value' => '1'
),
),
) );
?>
<?php get_template_part( 'loop1', 'coupon' ); ?>
Now I don't want to show the first post from the first loop in the second loop. I tried get_the_ID(); however if this one is not having the 'meta_key' => 'clpr_topcoupon' one post is missing. How do I get the get_the_ID(); from first post but only if it has the 'meta_key' => 'clpr_topcoupon'?

Answer 1

Wordpress docs suggest that you should avoid using query_posts whenever possible stating:
Note: This function will completely override the main query and isn’t intended for use by plugins or themes. Its overly-simplistic approach to modifying the main query can be problematic and should be avoided wherever possible.
Instead we can use WP_Query . We'll use the first loop to store the post id and check it during the second loop. Maybe something like this:
<?php
//set parameters for First query
$args = array('post_type' => APP_POST_TYPE,
'post_status' => 'publish',
'meta_key' => 'clpr_topcoupon',
'meta_value'=> 1,
APP_TAX_STORE => $term->slug,
'ignore_sticky_posts' => 1,
'posts_per_page' => 1 );
$first_query = new WP_Query($args); // create query
$post_id = 0;
//initialize loop for custom query like this
if ($first_query->have_posts() ) {
while ($first_query->have_posts() ) {
$first_query->the_post();
$post_id = $post->ID; //store post ID outside of loop
get_template_part( 'loop3', 'coupon' );
}
}
wp_reset_postdata();
//setup second query
$args = array( //excludes post from query by ID See Bill erikson for complete list of WP_Query() arguments
'post__not_in' => array($post_id),
'post_type' => APP_POST_TYPE,
'post_status' => 'publish',
APP_TAX_STORE => $term->slug,
'ignore_sticky_posts' => 1,
'posts_per_page' => -1,
'meta_query' => array(
'relation' => 'OR',
array(
'key' => 'clpr_excoupon',
'compare' => 'NOT EXISTS'
),
array(
'key' => 'clpr_excoupon',
'compare' => '!=',
'value' => '1'
)
)
);
$second_query = new WP_Query($args);
if ($second_query->have_posts() ) {
while ($second_query->have_posts() {
$second_query->the_post();
get_template_part( 'loop1', 'coupon' );
}
}
wp_reset_postdata();
Hopefully, this code is able to assist you. As you can see, WP_Query accepts an argument 'post__not_in' that takes an array of page id's and excludes them from the query. We retrieved the id from the first query and referenced it in the argument of the second query. I also included wp_reset_postdata which is worth taking a look at if you're running multiple queries.
Good luck with your project!