This plugin looks for page_contact.php
from active theme’s folder and uses plugin’s templates/page_contact.php
as a fallback.
<?php
/**
* Plugin Name: Test Plugin
*/
add_filter( 'template_include', 'contact_page_template', 99 );
function contact_page_template( $template ) {
$file_name="page_contact.php";
if ( is_page( 'contact' ) ) {
if ( locate_template( $file_name ) ) {
$template = locate_template( $file_name );
} else {
// Template not found in theme's folder, use plugin's template as a fallback
$template = dirname( __FILE__ ) . '/templates/' . $file_name;
}
}
return $template;
}
Create page “Contact” and then templates/page_contact.php
in your plugins folder. Now you should see your template content instead of normal template.