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<?php
/**
* Trait for models that may have a course attached.
*
* @since 4.6.0
*
* @package LearnDash\Core
*/
/** NOTICE: This code is currently under development and may not be stable.
* Its functionality, behavior, and interfaces may change at any time without notice.
* Please refrain from using it in production or other critical systems.
* By using this code, you assume all risks and liabilities associated with its use.
* Thank you for your understanding and cooperation.
**/
namespace LearnDash\Core\Models\Traits;
use LearnDash\Core\Models\Course;
use LearnDash_Settings_Section;
/**
* Trait for models that may have a course attached.
*
* @since 4.6.0
*/
trait Has_Course {
/**
* Returns a course step permalink.
*
* @since 4.6.0
*
* @return string
*/
public function get_permalink(): string {
$nested_urls_enabled = 'yes' === LearnDash_Settings_Section::get_section_setting(
'LearnDash_Settings_Section_Permalinks',
'nested_urls'
);
if ( $nested_urls_enabled ) {
$course = $this->get_course();
if ( $course ) {
return (string) learndash_get_step_permalink( $this->get_id(), $course->get_id() );
}
}
return (string) get_permalink( $this->get_id() );
}
/**
* Returns the related course or null.
*
* @since 4.6.0
*
* @return Course|null
*/
protected function get_course(): ?Course {
return $this->memoize(
function(): ?Course {
$course_id = (int) learndash_get_course_id( $this->get_id() );
if ( $course_id <= 0 ) {
return null;
}
$course = Course::find( $course_id );
if ( ! $course ) {
return null;
}
if ( $this->memoization_is_enabled() ) {
$course->enable_memoization();
}
return $course;
}
);
}
}