woothemes / woocommerce

		$value     = isset( $post_data[ $field_key ] ) ? $post_data[ $field_key ] : null;

		// Look for a validate_FIELDID_field method for special handling

		if ( is_callable( array( $this, 'validate_' . $key . '_field' ) ) ) {

			return $this->{'validate_' . $key . '_field'}( $key, $value );

		}

		// Look for a validate_FIELDTYPE_field method

		if ( is_callable( array( $this, 'validate_' . $type . '_field' ) ) ) {

		}

		// Look for a validate_FIELDTYPE_field method

		if ( is_callable( array( $this, 'validate_' . $type . '_field' ) ) ) {

			return $this->{'validate_' . $type . '_field'}( $key, $value );

		}

		// Fallback to text

		return $this->validate_text_field( $key, $value );