LLMS_Quiz_Data

Query data about a quiz

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File: includes/class.llms.quiz.data.php

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class LLMS_Quiz_Data extends LLMS_Abstract_Post_Data {
 
    /**
     * Constructor
     *
     * @since    3.16.0
     *
     * @param    int $quiz_id  WP Post ID of the quiz
     */
    public function __construct( $quiz_id ) {
 
        $this->quiz_id = $quiz_id;
        $this->quiz    = llms_get_post( $this->quiz_id );
        parent::__construct( $quiz_id );
 
    }
 
    /**
     * Retrieve # of quiz attempts within the period
     *
     * @since    3.16.0
     *
     * @param    string $period  date period [current|previous]
     * @return   int
     */
    public function get_attempt_count( $period = 'current' ) {
 
        global $wpdb;
 
        return $wpdb->get_var(
            $wpdb->prepare(
                "
            SELECT COUNT( id )
            FROM {$wpdb->prefix}lifterlms_quiz_attempts
            WHERE quiz_id = %d
              AND update_date BETWEEN %s AND %s
            ",
                $this->post_id,
                $this->get_date( $period, 'start' ),
                $this->get_date( $period, 'end' )
            )
        );
 
    }
 
    /**
     * Retrieve avg grade of quiz attempts within the period
     *
     * @since    3.16.0
     *
     * @param    string $period  date period [current|previous]
     * @return   int
     */
    public function get_average_grade( $period = 'current' ) {
 
        global $wpdb;
 
        $grade = $wpdb->get_var(
            $wpdb->prepare(
                "
            SELECT ROUND( AVG( grade ), 3 )
            FROM {$wpdb->prefix}lifterlms_quiz_attempts
            WHERE quiz_id = %d
              AND update_date BETWEEN %s AND %s
            ",
                $this->post_id,
                $this->get_date( $period, 'start' ),
                $this->get_date( $period, 'end' )
            )
        );
 
        return $grade ? $grade : 0;
 
    }
 
    /**
     * Retrieve the number assignments with a given status
     *
     * @since    3.24.0
     *
     * @param    string $status  status name
     * @param    string $period  date period [current|previous]
     * @return   int
     */
    public function get_count_by_status( $status, $period = 'current' ) {
 
        global $wpdb;
 
        return $wpdb->get_var(
            $wpdb->prepare(
                "
            SELECT COUNT( id )
            FROM {$wpdb->prefix}lifterlms_quiz_attempts
            WHERE quiz_id = %d
              AND status = %s
              AND update_date BETWEEN %s AND %s
            ",
                $this->post_id,
                $status,
                $this->get_date( $period, 'start' ),
                $this->get_date( $period, 'end' )
            )
        );
 
    }
 
    /**
     * Retrieve # of quiz fails within the period
     *
     * @since    3.16.0
     *
     * @param    string $period  date period [current|previous]
     * @return   int
     */
    public function get_fail_count( $period = 'current' ) {
        return $this->get_count_by_status( 'fail', $period );
    }
 
    /**
     * Retrieve # of quiz passes within the period
     *
     * @since    3.16.0
     *
     * @param    string $period  date period [current|previous]
     * @return   int
     */
    public function get_pass_count( $period = 'current' ) {
        return $this->get_count_by_status( 'pass', $period );
    }
 
    /**
     * Retrieve recent LLMS_User_Postmeta for the quiz.
     * This overrides the LLMS_Abstract_Post_Data method.
     *
     * @since    3.16.0
     *
     * @return   array
     */
    public function recent_events( $args = array() ) {
 
        $query_args = wp_parse_args(
            $args,
            array(
                'types' => array(),
            )
        );
 
        return parent::recent_events( $query_args );
    }
}

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Changelog Changelog

Changelog
Version Description
4.0.0 Removed deprecated properties $quiz and $quiz_id.
3.31.0 Extends LLMS_Abstract_Post_Data.
3.30.3 Explicitly define class properties.
3.16.0 Introduced.

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