WP_Query in wordpress and include ACF in results - wordpress

Question

I try to fetch all posts from a custom post type in Wordpress and include the advanced custom fields (ACF) in the results as well, in order to generate a JSON file with the data.
$query = new WP_Query(array(
'post_type' => 'resources',
'post_status' => 'publish',
'posts_per_page' => -1,
));
echo "var json=". json_encode($query->get_posts());
With a simple WP_Query, ACF data are not included and I have to iterate in the results and fetch all ACF manually one by one. Is there any way to include them in the original WP_Query results?

Answer 1

This would be my way of doing it.
Push whatever you want to the array and encode it.
<?php
$array = array();
$args = array(
'post_type' => 'resources',
'post_status' => array( 'publish' ),
'nopaging' => true,
'posts_per_page' => '-1',
'order' => 'ASC',
'orderby' => 'ID',
);
$queryResults = new WP_Query( $args );
if ( $queryResults->have_posts() ) {
$counter = 0;
while ( $queryResults->have_posts() ) {
$queryResults->the_post();
$array[ $counter ][ 'ID' ] = get_the_ID();
$array[ $counter ][ 'name' ] = get_the_title();
$array[ $counter ][ 'thumbnailURL' ] = get_the_post_thumbnail_url();
$array[ $counter ][ 'place' ] = get_field( 'resource_location' );
//etc etc etc
$counter++;
}
$jasoned = json_encode( $array, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES );
echo $jasoned;
} else {
//nothing found
}
wp_reset_postdata();

Answer 2

You can use get_fields() to fetch all acf fields registered at once with the post. Have a look the documentation here.

Answer 3

To add ACF data in query. WP_Query will not help.
WP_Query does not return values from any custom fields. To get these you must loop through the posts and get the values of the fields.
Refer to this documentation: https://www.advancedcustomfields.com/resources/query-posts-custom-fields/