WP_Customize_Setting::_preview_filter( mixed $original )

Callback function to filter non-multidimensional theme mods and options.

Description Description

If switch_to_blog() was called after the preview() method, and the current site is now not the same site, then this method does a no-op and returns the original value.

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Parameters Parameters


(mixed) (Required) Old value.

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Return Return

(mixed) New or old value.

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Source Source

File: wp-includes/class-wp-customize-setting.php

	public function _preview_filter( $original ) {
		if ( ! $this->is_current_blog_previewed() ) {
			return $original;

		$undefined  = new stdClass(); // Symbol hack.
		$post_value = $this->post_value( $undefined );
		if ( $undefined !== $post_value ) {
			$value = $post_value;
		} else {
			 * Note that we don't use $original here because preview() will
			 * not add the filter in the first place if it has an initial value
			 * and there is no post value.
			$value = $this->default;
		return $value;

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Changelog Changelog

Version Description
3.4.0 Introduced.

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