WP_Widget::get_field_id( string $field_name ): string

Constructs id attributes for use in WP_Widget::form() fields.


Description

This function should be used in form() methods to create id attributes for fields to be saved by WP_Widget::update().


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Parameters

$field_name string Required
Field name.

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Return

string ID attribute for $field_name.


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Source

File: wp-includes/class-wp-widget.php. View all references

public function get_field_id( $field_name ) {
	$field_name = str_replace( array( '[]', '[', ']' ), array( '', '-', '' ), $field_name );
	$field_name = trim( $field_name, '-' );

	return 'widget-' . $this->id_base . '-' . $this->number . '-' . $field_name;
}

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Changelog

Changelog
Version Description
4.4.0 Array format field IDs are now accepted.
2.8.0 Introduced.

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