How to use posts_fields_request filter in WordPress

posts_fields_request filter

Filters the SELECT clause of the query.

apply_filters_ref_array('posts_fields_request', string $fields, WP_Query $query)

Description

This is a filter hook that modifies the SELECT clause of the query. It consists of two parameters: one is $fields, and the second is $query. The posts_fields_request filter controls which database fields will be returned in the query, and it seems to default to all fields from the posts table.

Parameters

• $fields: (string) The SELECT clause of the query.
• $query: (WP_Query) The WP_Query instance (passed by reference).

Live Example

Basic Usage

To run the hook, copy the example below.

	$array = apply_filters('posts_fields_request', $array);
	if (!empty($array)) {
		// everything has led up to this point...
	}
	

Adding a Hook Callback

The following example is for adding a hook callback.

	// define the posts_fields_request callback 
	function weplugins_filter_posts_fields($array) {
		// make filter magic happen here...
		return $array;
	}
	 
	// add the filter 
	add_filter('posts_fields_request', 'weplugins_filter_posts_fields', 10, 1);
	

Removing a Hook Callback

To remove a hook callback, use the example below.

	// remove the filter 
	remove_filter('posts_fields_request', 'weplugins_filter_posts_fields', 10, 1);
	

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