How to disable content editor for a specific page template

Before pasting this code in your function.php file, edit line 11 and replace contact.php by the name of the page you want to disable the editor for.

add_action( 'admin_init', 'hide_editor' );

function hide_editor() {
	// Get the Post ID.
	$post_id = $_GET['post'] ? $_GET['post'] : $_POST['post_ID'] ;
	if( !isset( $post_id ) ) return;

	// Get the name of the Page Template file.
	$template_file = get_post_meta($post_id, '_wp_page_template', true);
    
    if($template_file == 'contact.php'){ // edit the template name
    	remove_post_type_support('page', 'editor');
    }
}

Credit: Snipplr.

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