To get custom posts by meta field value:
$args = array(
'post_type' => 'student_tc',
'meta_query' => array(
'relation' => 'OR',
array(
'key' => 'meta_field/acf_field',
'value' => 'field_value',
),
array(
'key' => 'meta_field/acf_field',
'value' => 'field_value',
),
array(
'key' => 'meta_field/acf_field',
'value' => 'field_value',
)
),
);
$posts = new WP_Query( $args );
The Code
You’re building an array ($args) to define the arguments for a custom query.
‘post_type’
‘post_type’ => ‘student_tc’: This specifies that you want to query posts of the custom post type student_tc.
‘meta_query’
1. ‘meta_query’ => array(…): This part defines an array of custom field queries. In this case, you’re looking to match posts that have specific meta field values.
2. ‘relation’ => ‘OR’: This means that the query will return posts that match any of the specified conditions in the meta_query array, not all of them.
3. The subsequent arrays define the conditions to match:
a. ‘key’ => ‘meta_field/acf_field’: Specifies the custom field key you’re looking for.
b. ‘value’ => ‘field_value’: Specifies the value of the custom field you want to match.
However, all three conditions in the meta_query array are identical, which means the query will behave the same as if only one condition was specified.
Querying Posts
$posts = new WP_Query($args): This line creates a new instance of the WP_Query class, passing in your $args array, and stores the resulting query object in the $posts variable.
Usage
You can then use the $posts object in a loop to display the posts that meet the conditions. For example:
if ( $posts->have_posts() ) {
while ( $posts->have_posts() ) {
$posts->the_post();
// Output the post content here
}
} else {
// No posts found
}
Summary
This code snippet enables you to query custom posts in WordPress based on specific custom field values using ACF. It’s a powerful way to tailor content retrieval based on custom metadata, enabling more dynamic and context-sensitive content on your site. Make sure to define unique key-value pairs in the meta_query array to utilize this capability fully.