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<?php /** * LearnDash Course Steps Questions Class. * * @package LearnDash * @subpackage Course / if ( ! defined( 'ABSPATH' ) ) { exit; } if ( ! class_exists( 'LDLMS_Course_Steps' ) ) { /* * Class for LearnDash Course Steps. / class LDLMS_Course_Steps { /* * Course ID for use in this instance. * * @var integer $course_id / private $course_id = 0; /* * Course Steps Loaded flag. * * @var boolean $steps_loaded Set to false initially. Set to true once course * steps have been loaded. / private $steps_loaded = false; /* * Course Steps are dirty. * * @var boolean $steps_dirty Set to false initially but can be set to true if the * dirty meta is read in and it true. / private $steps_dirty = false; /* * Course Steps array. * * @var array $steps Array of course steps. / protected $steps = array(); /* * Course post types * * @var array $steps_post_types Course post types. / protected $steps_post_types = array(); /* * Public constructor for class. * * @since 2.6.0 * @param integer $course_id Course post ID. / public function __construct( $course_id = 0 ) { if ( ! empty( $course_id ) ) { $this->course_id = absint( $course_id ); $this->steps_post_types = LDLMS_Post_Types::get_post_types( 'course_steps' ); } } /* * Load Quiz Questions. / public function load_steps() { if ( ! $this->steps_loaded ) { $this->steps_loaded = true; if ( LearnDash_Settings_Section::get_section_setting( 'LearnDash_Settings_Courses_Builder', 'shared_steps' ) == 'yes' ) { $this->steps = get_post_meta( $this->course_id, 'ld_course_steps', true ); } if ( ! is_array( $this->steps ) ) { $this->steps = array(); } if ( ! empty( $this->steps['h'] ) ) { if ( $this->is_steps_dirty() ) { $this->steps['h'] = $this->validate_steps( $this->steps['h'] ); $this->set_steps( $this->steps['h'] ); $this->clear_steps_dirty(); } } else { // Note here since we are loading the steps via legacy methods we don't need to validate. $this->steps['h'] = $this->load_steps_legacy(); } $this->build_steps(); } } /* * Sets the Course steps dirty flag and will force the steps to be * reloaded from queries. / public function set_steps_dirty() { if ( ! empty( $this->course_id ) ) { $this->steps_dirty = true; update_post_meta( $this->course_id, 'ld_course_steps_dirty', $this->course_id ); } } /* * Check if the steps dirty flag is set. / public function is_steps_dirty() { // If the steps_dirty boolean has been previously set to try it save a call to postmeta. if ( false === $this->steps_dirty ) { if ( ! empty( $this->course_id ) ) { $is_dirty = get_post_meta( $this->course_id, 'ld_course_steps_dirty', true ); if ( absint( $is_dirty ) === absint( $this->course_id ) ) { $this->steps_dirty = true; } } } return $this->steps_dirty; } /* * Clear the steps dirty flag. / public function clear_steps_dirty() { if ( ! empty( $this->course_id ) ) { $this->steps_dirty = false; delete_post_meta( $this->course_id, 'ld_course_steps_dirty' ); } } /* * Get the total steps course for the course. / public function get_steps_count() { $course_steps_count = 0; $this->get_steps( 't' ); if ( isset( $this->steps['t']['sfwd-lessons'] ) ) { $course_steps_count += count( $this->steps['t']['sfwd-lessons'] ); } if ( isset( $this->steps['t']['sfwd-topic'] ) ) { $course_steps_count += count( $this->steps['t']['sfwd-topic'] ); } if ( ( isset( $this->steps['h']['sfwd-quiz'] ) ) && ( ! empty( $this->steps['h']['sfwd-quiz'] ) ) ) { $course_steps_count++; } return $course_steps_count; } /* * Build Course Steps nodes. / protected function build_steps() { if ( ! isset( $this->steps['h'] ) ) { $this->steps['h'] = array(); } if ( ! isset( $this->steps['t'] ) ) { $this->steps['t'] = array(); } if ( ! isset( $this->steps['r'] ) ) { $this->steps['r'] = array(); } if ( ! isset( $this->steps['l'] ) ) { $this->steps['l'] = array(); } if ( ! empty( $this->steps['h'] ) ) { if ( empty( $this->steps['t'] ) ) { $this->steps['t'] = $this->steps_grouped_by_type( $this->steps['h'] ); } if ( empty( $this->steps['l'] ) ) { $this->steps['l'] = $this->steps_grouped_linear( $this->steps['h'] ); } if ( empty( $this->steps['r'] ) ) { $this->steps['r'] = $this->steps_grouped_reverse_keys( $this->steps['h'] ); } } } /* * Validate Course Steps nodes and items. * * @since 2.5.0 * @param array $steps Current steps nodes and items. / protected function validate_steps( $steps = array() ) { if ( ! empty( $steps ) ) { foreach ( $steps as $steps_type => $steps_type_set ) { if ( ( is_array( $steps_type_set ) ) && ( ! empty( $steps_type_set ) ) ) { $steps_query_args = array( 'post_type' => $steps_type, 'post__in' => array_keys( $steps_type_set ), 'posts_per_page' => -1, 'post_status' => 'publish', 'fields' => 'ids', 'orderby' => 'post__in', ); $steps_query = new WP_Query( $steps_query_args ); if ( ( $steps_query instanceof WP_Query ) && ( property_exists( $steps_query, 'posts' ) ) ) { if ( ! is_array( $steps_query->posts ) ) { $steps_query->posts = array(); } $step_ids_diff = array_diff( array_keys( $steps_type_set ), $steps_query->posts ); if ( ! empty( $step_ids_diff ) ) { foreach ( $step_ids_diff as $step_id_diff ) { if ( isset( $steps[ $steps_type ][ $step_id_diff ] ) ) { unset( $steps[ $steps_type ][ $step_id_diff ] ); } if ( isset( $steps_type_set[ $step_id_diff ] ) ) { unset( $steps_type_set[ $step_id_diff ] ); } } } } if ( ! empty( $steps_type_set ) ) { foreach ( $steps_type_set as $step_id => $step_id_set ) { if ( ( is_array( $step_id_set ) ) && ( ! empty( $step_id_set ) ) ) { $steps[ $steps_type ][ $step_id ] = $this->validate_steps( $step_id_set ); } } } } } } return $steps; } /* * This converts the normal hierachy steps into an array groups be the post type. This is easier for search. * * @since 2.5.0 * @param array $steps Array of Course steps nodes and items. * @return array Array of steps by type. / protected function steps_grouped_by_type( $steps = array() ) { $steps_by_type = array(); if ( ! empty( $steps ) ) { foreach ( $steps as $steps_type => $steps_type_set ) { if ( ! isset( $steps_by_type[ $steps_type ] ) ) { $steps_by_type[ $steps_type ] = array(); } if ( ( is_array( $steps_type_set ) ) && ( ! empty( $steps_type_set ) ) ) { foreach ( $steps_type_set as $step_id => $step_id_set ) { $steps_by_type[ $steps_type ][] = $step_id; if ( ( is_array( $step_id_set ) ) && ( ! empty( $step_id_set ) ) ) { $sub_steps = $this->steps_grouped_by_type( $step_id_set ); if ( ! empty( $sub_steps ) ) { foreach ( $sub_steps as $sub_step_type => $sub_step_ids ) { if ( ! isset( $steps_by_type[ $sub_step_type ] ) ) { $steps_by_type[ $sub_step_type ] = array(); } if ( ! empty( $sub_step_ids ) ) { $steps_by_type[ $sub_step_type ] = array_merge( $steps_by_type[ $sub_step_type ], $sub_step_ids ); } } } } } } } } return $steps_by_type; } /* * Group Steps linear. * * @since 2.5.0 * @param array $steps Array of Course step nodes and items. * @return array Array of steps by linear. / protected function steps_grouped_linear( $steps = array() ) { $steps_linear = array(); if ( ! empty( $steps ) ) { foreach ( $steps as $steps_type => $steps_type_set ) { if ( ! isset( $steps_by_type[ $steps_type ] ) ) { if ( ( is_array( $steps_type_set ) ) && ( ! empty( $steps_type_set ) ) ) { foreach ( $steps_type_set as $step_id => $step_id_set ) { $steps_linear[] = $steps_type . ':' . $step_id; if ( ( is_array( $step_id_set ) ) && ( ! empty( $step_id_set ) ) ) { $sub_steps = $this->steps_grouped_linear( $step_id_set ); if ( ! empty( $sub_steps ) ) { $steps_linear = array_merge( $steps_linear, $sub_steps ); } } } } } } } return $steps_linear; } /* * Group Steps reversed keys. * * @since 2.5.0 * @param array $steps Array of Course step nodes and items. * @return array Array of steps. / protected function steps_grouped_reverse_keys( $steps = array() ) { $steps_reversed = $this->_steps_reverse_keys_walk( $steps ); if ( ! empty( $steps_reversed ) ) { foreach ( $steps_reversed as $reversed_key => $reversed_set ) { if ( ! empty( $reversed_set ) ) { $steps_reversed[ $reversed_key ] = $this->_flatten_item_parent_steps( $reversed_set ); } else { $steps_reversed[ $reversed_key ] = array(); } } } return $steps_reversed; } /* * Internal utility function to reverse walk the Course steps nodes and items / private function _steps_reverse_keys_walk( $steps, $parent_tree = array() ) { $steps_reversed = array(); if ( ! empty( $steps ) ) { foreach ( $steps as $steps_type => $steps_type_set ) { if ( ( is_array( $steps_type_set ) ) && ( ! empty( $steps_type_set ) ) ) { foreach ( $steps_type_set as $step_id => $step_id_set ) { $steps_parents = array(); $steps_parents[ $steps_type . ':' . $step_id ] = $parent_tree; if ( ( is_array( $step_id_set ) ) && ( ! empty( $step_id_set ) ) ) { $sub_steps = $this->_steps_reverse_keys_walk( $step_id_set, $steps_parents ); if ( ! empty( $sub_steps ) ) { $steps_parents = array_merge( $steps_parents, $sub_steps ); } } if ( ! empty( $steps_parents ) ) { $steps_reversed = array_merge( $steps_reversed, $steps_parents ); } } } } } return $steps_reversed; } /* * Internal utility function to reverse parent keys of the Course nodes and items. / private function _flatten_item_parent_steps( $steps = array() ) { $flattened_steps = array(); if ( ! empty( $steps ) ) { foreach ( $steps as $a_step_key => $a_steps ) { $flattened_steps[] = $a_step_key; $sub_steps = $this->_flatten_item_parent_steps( $a_steps ); if ( !empty( $sub_steps ) ) { $flattened_steps = array_merge( $flattened_steps, $sub_steps ); } } } return $flattened_steps; } /* * Set Course steps. * This is generally called when editing the course and the course steps has been changed. * * @since 2.5.0 * @param array $course_steps Array of Course steps. / public function set_steps( $course_steps = array() ) { if ( ! empty( $this->course_id ) ) { $this->steps = array(); $this->steps['h'] = $course_steps; $this->build_steps(); if ( LearnDash_Settings_Section::get_section_setting( 'LearnDash_Settings_Courses_Builder', 'shared_steps' ) != 'yes' ) { $this->set_step_to_course_legacy(); $course_steps = get_post_meta( $this->course_id, 'ld_course_steps', true ); if ( ! is_null( $course_steps ) ) { delete_post_meta( $this->course_id, 'ld_course_steps' ); } } else { $this->set_step_to_course(); update_post_meta( $this->course_id, 'ld_course_steps', $this->steps ); } } } /* * Get Course steps by node type. * * @since 2.5.0 * @param string $steps_type Course Steps node type. * @return array of Course Step items found in node. / function get_steps( $steps_type = 'h' ) { $this->load_steps(); if ( isset( $this->steps[ $steps_type ] ) ) { return $this->steps[ $steps_type ]; } elseif ( 'all' === $steps_type ) { return $this->steps; } return array(); } /* * This function sets a post_meta association for the various steps within the course. * The new association is 'ld_course_XXX' where 'XXX' is the course ID. * * @since 2.5.0 / function set_step_to_course() { global $wpdb; $course_steps_new = array(); if ( ( isset( $this->steps['t'] ) ) && ( ! empty( $this->steps['t'] ) ) ) { foreach ( $this->steps['t'] as $step_type => $step_type_set ) { if ( ! empty( $step_type_set ) ) { $course_steps_new = array_merge( $course_steps_new, $step_type_set ); } } } if ( ! empty( $course_steps_new ) ) { sort( $course_steps_new, SORT_NUMERIC ); } $sql_str = $wpdb->prepare( "SELECT post_id as post_id FROM " . $wpdb->postmeta . " WHERE meta_key LIKE %s", 'ld_course_' . $this->course_id ); $course_steps_old = $wpdb->get_col( $sql_str ); if ( ! empty( $course_steps_old ) ) { sort( $course_steps_old, SORT_NUMERIC ); } $course_steps_intersect = array_intersect( $course_steps_new, $course_steps_old ); // Add Steps. $course_steps_add = array_diff( $course_steps_new, $course_steps_intersect ); if ( ! empty( $course_steps_add ) ) { $course_steps_add_chunks = array_chunk( $course_steps_add, LEARNDASH_LMS_DEFAULT_CB_INSERT_CHUNK_SIZE ); foreach ( $course_steps_add_chunks as $insert_post_ids ) { $insert_sql_str = ""; foreach ( $insert_post_ids as $post_id ) { if ( ! empty( $insert_sql_str ) ) { $insert_sql_str .= ','; } $insert_sql_str .= "(" . $post_id . ", 'ld_course_" . $this->course_id . "'," . $this->course_id . ")"; } if ( ! empty( $insert_sql_str ) ) { $insert_sql_str = "INSERT INTO " . $wpdb->postmeta . " (`post_id`, `meta_key`, `meta_value`) VALUES " . $insert_sql_str; $wpdb->query( $insert_sql_str ); } } } // Remove Steps. $course_steps_remove = array_diff( $course_steps_old, $course_steps_intersect ); if ( ! empty( $course_steps_remove ) ) { $delete_sql_str = "DELETE FROM " . $wpdb->postmeta . " WHERE meta_key LIKE 'ld_course_" . $this->course_id . "' AND post_id IN (" . implode(',', $course_steps_remove ) . ")"; $wpdb->query( $delete_sql_str ); } /* * Secondary processing here we need to determine all the primary associations for this course and remove any items no longer associated. * For example prior to v2.5 you may have a course ID #123. The course has a lesson, topic and global quiz. Each of these items will have * a post_meta reference 'course_id'. Now in v2.5 the course steps are stored into a collection or nodes. But if for example the quiz is * remove we need to also remove the legacy 'course_id' association. / $sql_str = $wpdb->prepare( "SELECT posts.ID as post_id FROM " . $wpdb->posts . " as posts INNER JOIN " . $wpdb->postmeta . " as postmeta ON posts.ID = postmeta.post_id WHERE 1=1 AND posts.post_type IN (" . "'" . implode("','", $this->steps_post_types ) . "'" . ") AND postmeta.meta_key = %s AND postmeta.meta_value = %d", 'course_id', $this->course_id ); $course_steps_primary = $wpdb->get_col( $sql_str ); if ( ! empty( $course_steps_primary ) ) { $course_steps_primary = array_map( 'intval', $course_steps_primary ); } $course_steps_primary_intersect = array_intersect( $course_steps_new, $course_steps_primary ); $course_steps_primary_remove = array_diff( $course_steps_primary, $course_steps_primary_intersect ); if ( ! empty( $course_steps_primary_remove ) ) { $delete_sql_str = "DELETE FROM " . $wpdb->postmeta . " WHERE meta_key = 'course_id' AND post_id IN (" . implode(',', $course_steps_primary_remove ) . ")"; $wpdb->query( $delete_sql_str ); } } /* * Set Steps to Course Legacy. * This is used when the Course Option Share Steps is not used. * * @since 2.5.0 / protected function set_step_to_course_legacy() { global $wpdb; $course_steps_new = array(); if ( ( isset( $this->steps['t'] ) ) && ( ! empty( $this->steps['t'] ) ) ) { foreach ( $this->steps['t'] as $step_type => $step_type_set ) { if ( ! empty( $step_type_set ) ) { $this->set_step_to_course_order( $step_type_set ); $course_steps_new = array_merge( $course_steps_new, $step_type_set ); } } } // Finally we set the Course order to Menu Order/ASC so we can retain te ordering. learndash_update_setting( $this->course_id, 'course_lesson_orderby', 'menu_order' ); learndash_update_setting( $this->course_id, 'course_lesson_order', 'ASC' ); if ( ! empty( $course_steps_new ) ) { sort( $course_steps_new, SORT_NUMERIC ); } $sql_str = $wpdb->prepare( "SELECT posts.ID as post_id FROM " . $wpdb->posts . " as posts INNER JOIN " . $wpdb->postmeta . " as postmeta ON posts.ID = postmeta.post_id WHERE 1=1 AND posts.post_type IN (" . "'" . implode("','", $this->steps_post_types ) . "'" . ") AND postmeta.meta_key = %s AND postmeta.meta_value = %d", 'course_id', $this->course_id ); $course_steps_old = $wpdb->get_col( $sql_str ); if ( ! empty( $course_steps_old ) ) { $course_steps_old = array_map( 'intval', $course_steps_old ); } $course_steps_intersect = array_intersect( $course_steps_new, $course_steps_old ); // Add Steps. $course_steps_add = array_diff( $course_steps_new, $course_steps_intersect ); if ( ! empty( $course_steps_add ) ) { foreach( $course_steps_add as $post_id ) { learndash_update_setting( $post_id, 'course', $this->course_id ); } } // Remove Steps $course_steps_remove = array_diff( $course_steps_old, $course_steps_intersect ); if ( !empty( $course_steps_remove ) ) { foreach( $course_steps_remove as $post_id ) { learndash_update_setting( $post_id, 'course', 0 ); learndash_update_setting( $post_id, 'lesson', 0 ); } } if ( ( isset( $this->steps['h'] ) ) && ( !empty( $this->steps['h'] ) ) ) { $this->set_step_to_course_relationship( $this->steps['h'] ); } } function set_step_to_course_relationship( $steps = array(), $parent_lesson_id = 0 ) { global $wpdb; if ( !empty( $steps ) ) { foreach( $steps as $steps_type => $steps_type_set ) { if ( $steps_type === 'sfwd-lessons' ) { // A note about the queries. These should have been run through WP_Query // but there is more overhead there than we need. $sql_str = $wpdb->prepare( "SELECT DISTINCT posts.ID FROM ". $wpdb->posts ." as posts INNER JOIN ". $wpdb->postmeta ." as postmeta_course ON posts.ID=postmeta_course.post_id WHERE 1=1 AND posts.post_type = %s AND postmeta_course.meta_key = 'course_id' AND postmeta_course.meta_value = %d ", $steps_type, $this->course_id ); } else if ( ( $steps_type === 'sfwd-quiz' ) && ( $parent_lesson_id === 0 ) ) { $sql_str = $wpdb->prepare( "SELECT posts.ID FROM ". $wpdb->posts ." as posts LEFT JOIN ". $wpdb->postmeta ." postmeta ON ( posts.ID = postmeta.post_id ) LEFT JOIN ". $wpdb->postmeta ." AS mt1 ON ( posts.ID = mt1.post_id ) LEFT JOIN ". $wpdb->postmeta ." AS mt2 ON (posts.ID = mt2.post_id AND mt2.meta_key = 'lesson_id' ) WHERE 1=1 AND ( ( postmeta.meta_key = 'course_id' AND CAST(postmeta.meta_value AS SIGNED) = %d ) AND ( ( mt1.meta_key = 'lesson_id' AND CAST(mt1.meta_value AS SIGNED) = '0' ) OR mt2.post_id IS NULL ) ) AND posts.post_type = %s GROUP BY posts.ID ORDER BY posts.post_date DESC ", $this->course_id, $steps_type ); } else if ( !empty( $parent_lesson_id ) ) { $sql_str = $wpdb->prepare( "SELECT DISTINCT posts.ID FROM ". $wpdb->posts ." as posts INNER JOIN ". $wpdb->postmeta ." as postmeta_course ON posts.ID=postmeta_course.post_id INNER JOIN ". $wpdb->postmeta ." as postmeta_lesson ON posts.ID=postmeta_lesson.post_id WHERE 1=1 AND posts.post_type = %s AND postmeta_course.meta_key = 'course_id' AND postmeta_course.meta_value = %d AND postmeta_lesson.meta_key = 'lesson_id' AND postmeta_lesson.meta_value = %d ", $steps_type, $this->course_id, $parent_lesson_id ); } if ( !empty( $sql_str ) ) { if ( ( is_array( $steps_type_set ) ) && (count( $steps_type_set ) ) ) { $step_type_ids_new = array_keys( $steps_type_set ); } else { $step_type_ids_new = array(); } $step_type_ids_old = $wpdb->get_col( $sql_str ); if ( !empty( $step_type_ids_old ) ) { $step_type_ids_old = array_map( 'intval', $step_type_ids_old ); } $step_type_ids_intersect = array_intersect( $step_type_ids_new, $step_type_ids_old ); $step_type_ids_add = array_diff( $step_type_ids_new, $step_type_ids_intersect ); if ( ( !empty( $step_type_ids_add ) ) && ( !empty( $parent_lesson_id ) ) ) { foreach( $step_type_ids_add as $post_id ) { //update_post_meta( $post_id, 'lesson_id', $parent_lesson_id ); learndash_update_setting( $post_id, 'lesson', $parent_lesson_id ); } } $step_type_ids_remove = array_diff( $step_type_ids_old, $step_type_ids_intersect ); if ( !empty( $step_type_ids_remove ) ) { foreach( $step_type_ids_remove as $post_id ) { //delete_post_meta( $post_id, 'lesson_id' ); learndash_update_setting( $post_id, 'lesson', 0 ); } } } foreach( $steps_type_set as $step_id => $step_id_set ) { if ( ( is_array( $step_id_set ) ) && ( !empty( $step_id_set ) ) ) { $this->set_step_to_course_relationship( $step_id_set, $step_id ); } } } } } function set_step_to_course_order( $steps = array() ) { global $wpdb; if ( !empty( $steps ) ) { $sql_str = ''; foreach( $steps as $step_order => $step_id ) { $step_order += 1; $wpdb->update( $wpdb->posts, array( 'menu_order' => $step_order ), array( 'ID' => $step_id ), array( '%d' ), array( '%d' ) ); } } } function load_steps_legacy( ) { $steps = array(); if ( !empty( $this->course_id ) ) { $course_settings = learndash_get_setting( $this->course_id ); if ( !is_array( $course_settings ) ) { if ( !empty( $course_settings ) ) $course_settings = array( $course_settings ); else $course_settings = array(); } $lesson_settings = sfwd_lms_get_post_options( 'sfwd-lessons' ); if ( ( !isset( $course_settings['course_lesson_order'] ) ) \|\| ( empty( $course_settings['course_lesson_order'] ) ) ) { if ( ( isset( $lesson_settings['order'] ) ) && ( !empty( $lesson_settings['order'] ) ) ) { $course_settings['course_lesson_order'] = $lesson_settings['order']; } } if ( ( !isset( $course_settings['course_lesson_orderby'] ) ) \|\| ( empty( $course_settings['course_lesson_orderby'] ) ) ) { if ( ( isset( $lesson_settings['orderby'] ) ) && ( !empty( $lesson_settings['orderby'] ) ) ) { $course_settings['course_lesson_orderby'] = $lesson_settings['orderby']; } } if ( ( !isset( $course_settings['course_lesson_per_page'] ) ) \|\| ( empty( $course_settings['course_lesson_per_page'] ) ) ) { if ( ( isset( $lesson_settings['posts_per_page'] ) ) && ( !empty( $lesson_settings['posts_per_page'] ) ) ) { $course_settings['course_lesson_per_page'] = $lesson_settings['posts_per_page']; } } // Course > Lessons $lesson_steps_query_args = array( 'post_type' => 'sfwd-lessons', 'posts_per_page' => -1, 'post_status' => 'publish', 'fields' => 'ids', 'orderby' => $course_settings['course_lesson_orderby'], 'order' => $course_settings['course_lesson_order'], 'meta_query' => array( array( 'key' => 'course_id', 'value' => intval( $this->course_id ), 'compare' => '=', 'type' => 'NUMERIC' ) ) ); $lesson_steps_query = new WP_Query( $lesson_steps_query_args ); if ( ( $lesson_steps_query instanceof WP_Query ) && ( property_exists( $lesson_steps_query, 'posts' ) ) && ( !empty( $lesson_steps_query->posts) ) ) { foreach( $lesson_steps_query->posts as $lesson_id ) { $steps['sfwd-lessons'][$lesson_id] = array(); $steps['sfwd-lessons'][$lesson_id]['sfwd-topic'] = array(); $steps['sfwd-lessons'][$lesson_id]['sfwd-quiz'] = array(); // Course > Lesson > Topics $topic_steps_query_args = array( 'post_type' => 'sfwd-topic', 'posts_per_page' => -1, 'post_status' => 'publish', 'fields' => 'ids', 'orderby' => $course_settings['course_lesson_orderby'], 'order' => $course_settings['course_lesson_order'], 'meta_query' => array( 'relation' => 'AND', array( 'key' => 'course_id', 'value' => intval( $this->course_id ), 'compare' => '=', 'type' => 'NUMERIC' ), array( 'key' => 'lesson_id', 'value' => intval( $lesson_id ), 'compare' => '=', 'type' => 'NUMERIC' ), ) ); $topic_steps_query = new WP_Query( $topic_steps_query_args ); if ( ( $topic_steps_query instanceof WP_Query ) && ( property_exists( $topic_steps_query, 'posts' ) ) && ( !empty( $topic_steps_query->posts) ) ) { foreach( $topic_steps_query->posts as $topic_id ) { $steps['sfwd-lessons'][$lesson_id]['sfwd-topic'][$topic_id] = array(); $steps['sfwd-lessons'][$lesson_id]['sfwd-topic'][$topic_id]['sfwd-quiz'] = array(); // Course > Lesson > Topic > Quizzes $topic_quiz_steps_query_args = array( 'post_type' => 'sfwd-quiz', 'posts_per_page' => -1, 'post_status' => 'publish', 'fields' => 'ids', 'orderby' => $course_settings['course_lesson_orderby'], 'order' => $course_settings['course_lesson_order'], 'meta_query' => array( 'relation' => 'AND', array( 'key' => 'course_id', 'value' => intval( $this->course_id ), 'compare' => '=', 'type' => 'NUMERIC' ), array( 'key' => 'lesson_id', 'value' => intval( $topic_id ), 'compare' => '=', 'type' => 'NUMERIC' ), ) ); $topic_quiz_steps_query = new WP_Query( $topic_quiz_steps_query_args ); if ( ( $topic_quiz_steps_query instanceof WP_Query ) && ( property_exists( $topic_quiz_steps_query, 'posts' ) ) && ( !empty( $topic_quiz_steps_query->posts) ) ) { foreach( $topic_quiz_steps_query->posts as $quiz_id ) { $steps['sfwd-lessons'][$lesson_id]['sfwd-topic'][$topic_id]['sfwd-quiz'][$quiz_id] = array(); } } } } // Course > Lesson > Quizzes $lesson_quiz_steps_query_args = array( 'post_type' => 'sfwd-quiz', 'posts_per_page' => -1, 'post_status' => 'publish', 'fields' => 'ids', 'orderby' => $course_settings['course_lesson_orderby'], 'order' => $course_settings['course_lesson_order'], 'meta_query' => array( 'relation' => 'AND', array( 'key' => 'course_id', 'value' => intval( $this->course_id ), 'compare' => '=', 'type' => 'NUMERIC' ), array( 'key' => 'lesson_id', 'value' => intval( $lesson_id ), 'compare' => '=', 'type' => 'NUMERIC' ), ) ); $lesson_quiz_steps_query = new WP_Query( $lesson_quiz_steps_query_args ); if ( ( $lesson_quiz_steps_query instanceof WP_Query ) && ( property_exists( $lesson_quiz_steps_query, 'posts' ) ) && ( !empty( $lesson_quiz_steps_query->posts) ) ) { foreach( $lesson_quiz_steps_query->posts as $quiz_id ) { $steps['sfwd-lessons'][$lesson_id]['sfwd-quiz'][$quiz_id] = array(); } } } } else { $steps['sfwd-lessons'] = array(); } // Course > Quizzes (Global Quizzes) $quiz_steps_query_args = array( 'post_type' => 'sfwd-quiz', 'posts_per_page' => -1, 'post_status' => 'publish', 'fields' => 'ids', 'orderby' => $course_settings['course_lesson_orderby'], 'order' => $course_settings['course_lesson_order'], 'meta_query' => array( 'relation' => 'AND', array( 'key' => 'course_id', 'value' => intval( $this->course_id ), 'compare' => '=', 'type' => 'NUMERIC' ), array( 'relation' => 'OR', array( 'key' => 'lesson_id', 'value' => 0, 'compare' => '=', 'type' => 'NUMERIC' ), array( 'key' => 'lesson_id', 'compare' => 'NOT EXISTS', ), ) ) ); $quiz_steps_query = new WP_Query( $quiz_steps_query_args ); if ( ( $quiz_steps_query instanceof WP_Query ) && ( property_exists( $quiz_steps_query, 'posts' ) ) && ( !empty( $quiz_steps_query->posts) ) ) { foreach( $quiz_steps_query->posts as $quiz_id ) { $steps['sfwd-quiz'][$quiz_id] = array(); } } else { $steps['sfwd-quiz'] = array(); } } return $steps; } function get_item_parent_steps( $post_id = 0, $post_type = '' ) { $item_ancestor_steps = array(); if ( !empty( $post_id ) ) { if ( empty( $post_type ) ) { $post_type = get_post_type( $post_id ); } if ( !empty( $post_type ) ) { $this->load_steps(); $steps_key = $post_type .':'. $post_id; if ( isset( $this->steps['r'][$steps_key] ) ) { $item_ancestor_steps = $this->steps['r'][$steps_key]; } } } return $item_ancestor_steps; } function get_parent_step_id( $step_post_id = 0, $ancestor_step_type = '' ) { if ( !empty( $step_post_id ) ) { $step_ancestor_item = $this->get_item_parent_steps( $step_post_id ); if ( !empty( $step_ancestor_item ) ) { foreach( $step_ancestor_item as $parent_steps_value ) { //error_log('parent_steps_value<pre>'. print_r($parent_steps_value, true) .'</pre>'); if ( ( is_string( $parent_steps_value ) ) && ( !empty( $parent_steps_value ) ) ) { list( $s_post_type, $s_post_id ) = explode(':', $parent_steps_value ); if ( !empty( $ancestor_step_type ) ) { if ( $ancestor_step_type == $s_post_type ) { return intval( $s_post_id ); } } else { return intval( $s_post_id ); } } } } } } function get_children_steps( $post_id = 0, $post_type = '' ) { $item_children_steps = array(); if ( !empty( $post_id ) ) { $this->load_steps(); $steps_h = $this->get_steps('h'); $ancestor_steps = $this->get_item_parent_steps( $post_id ); if ( !empty( $ancestor_steps ) ) { $ancestor_steps = array_reverse( $ancestor_steps ); } $ancestor_steps[] = get_post_type( $post_id ) .':'. $post_id; foreach( $ancestor_steps as $ancestor_step ) { if ( ( is_string( $ancestor_step ) ) && ( !empty( $ancestor_step ) ) ) { list( $ancestor_step_post_type, $ancestor_step_post_id ) = explode(':', $ancestor_step ); if ( isset( $steps_h[$ancestor_step_post_type][$ancestor_step_post_id] ) ) { $steps_h = $steps_h[$ancestor_step_post_type][$ancestor_step_post_id]; } } } if ( !empty( $steps_h ) ) { foreach( $steps_h as $steps_post_type => $steps_post_set ) { if (( empty( $post_type) ) \|\| ( $post_type == $steps_post_type ) ) { $item_children_steps = array_merge( $item_children_steps, array_keys( $steps_post_set ) ); } } } } return $item_children_steps; } / function load_lessons_list( ) { $lessons_ids = array(); if ( !empty( $this->course_id ) ) { $this->lessons_query_args = array( 'post_type' => LearnDash_Lesson::get_post_type(), 'orderby' => $this->settings['course_lesson_orderby'], 'order' => $this->settings['course_lesson_order'], 'fields' => 'ids', 'meta_key' => 'course_id', 'meta_value' => $this->course_id, 'nopaging' => true ); error_log('lessons_query<pre>'. print_r($this->lessons_query_args, true) .'</pre>'); $this->lessons_query = new WP_Query( $this->lessons_query_args ); //error_log('lessons_query<pre>'. print_r($lessons_query, true) .'</pre>'); if ( ( $this->lessons_query instanceof WP_Query ) && ( property_exists( $this->lessons_query, 'posts' ) ) ) { $lessons_ids = $this->lessons_query->posts; } } return $lessons_ids; } */ static function steps_split_keys( $steps, $parent_type = '' ) { if ( $parent_type == 'sfwd-lessons' ) { $course_steps_split_keys = array( 'sfwd-topic' => array(), 'sfwd-quiz' => array() ); } else if ( $parent_type == 'sfwd-topic' ) { $course_steps_split_keys = array( 'sfwd-quiz' => array() ); } else if ( $parent_type == 'sfwd-quiz' ) { $course_steps_split_keys = array(); } else if ( $parent_type == 'section-heading' ) { $course_steps_split_keys = array(); } else if ( empty( $parent_type ) ) { $course_steps_split_keys = array( 'sfwd-lessons' => array(), 'sfwd-quiz' => array() ); } if ( !empty( $steps ) ) { foreach( $steps as $step_idx => $step_set ) { list( $step_post_type, $step_id ) = explode(':', $step_idx ); if ( ( !empty( $step_post_type ) ) && ( !empty( $step_id ) ) ) { if ( !isset( $course_steps_split_keys[$step_post_type] ) ) $course_steps_split_keys[$step_post_type] = array(); $course_steps_split_keys[$step_post_type][$step_id] = self::steps_split_keys( $step_set, $step_post_type ); } } } return $course_steps_split_keys; } } }

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