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Diffstat (limited to 'public/app/models/cms/Course_model.php')
| -rw-r--r-- | public/app/models/cms/Course_model.php | 314 |
1 files changed, 0 insertions, 314 deletions
diff --git a/public/app/models/cms/Course_model.php b/public/app/models/cms/Course_model.php deleted file mode 100644 index 6614993..0000000 --- a/public/app/models/cms/Course_model.php +++ /dev/null @@ -1,314 +0,0 @@ -<?php -namespace app\models\cms; - -use \Registry; - - -class Course_model { - - /** COURSES - * ------------------------------------------------------------------------- - */ - - /** get all categories - * - * raw table data (simplest SELECT) - * - */ - public static function get_categories() - { - return Registry::use('database')->runQuery( - "SELECT * FROM course ORDER BY label", - [] - ); - } - - /** courses struct - * - * a super array with almost any info needed about courses - * - * @return (array) ['tree' => ..., 'breadcrumbs' => ... ] - */ - public static function courses_struct() - { - $tree = self::category_tree(); - return [ - 'tree' => $tree, - 'breadcrumbs' => self::breadcrumbs($tree) - ]; - } - - - /** constuct a category_tree - * - * returns a tree representation of the categories - * - * NOTE: - * category_tree() is an expensive method; - * it calls 2 other methods implementing recursive algorithms - * thus it uses many sources to run (particularly RAM). - * Caching the result is strogly recommended. - * - */ - public static function category_tree() - { - $categories = self::get_categories(); // get all categories - - $tree = self::to_tree($categories); // format to a tree - - $tree_wParents = self::tree_parents($tree); // add parents section for each tree-node - - return $tree_wParents; - } - - - /** to_tree - * - * constructs a tree from raw-table data; - * this is a private method and uses a recursive algorithm - * - * @param $dataset (array): flar array of records with id/parent-id pairs - * @return $root (array): id of root category - * - * (**) each node has 2 parts: - * .... .. rec : all record attributes/data as passed into $dataset - * .... .. childs : array of (children) nodes - */ - private static function to_tree($dataset, $root = 0) - { - $return = []; - - // loop data ; search for direct children of root - foreach($dataset as $key => $rec) { - - $child = $rec['id']; - $parent = $rec['parent_id']; - - if ($parent == $root) { // a direct child is found - - unset($dataset[$key]); // remove item (no need to traverse again) - - // Append the child into result array ; parse its children - $return[] = [ - 'rec' => [ - 'id' => $rec['id'], - 'label' => $rec['label'], - 'order' => $rec['order'], - 'parent' => $rec['parent_id'] - ], - 'childs' => self::to_tree($dataset, $child) // recursively - ]; - } - } - return empty($return) ? [] : $return; - } - - - /** tree_parents - * - * adds a section to each tree node with all parents of each node - * - * @param $tree (array) : nodes array (each node has `rec` and `childs` sections ) - * @param $parents (array); DO NOT SET IT (takes values automaticaly) - * @return array of nodes with an extra node[parents] section - * - */ - private static function tree_parents($tree, $parents = []) - { - $tree_with_parents = []; - - foreach($tree as $key => $node) { - // parents to be pushed for node's children - $push_parents = $parents; // parents so far - $push_parents[] = $node['rec']; // this record will be a new parent - - $tree_with_parents[$key] = [ - 'rec' => $node['rec'], - 'parents' => $parents, - 'childs' => ($node['childs'] == []) - ? [] - : self::tree_parents($node['childs'], $push_parents) - ]; - } - - return $tree_with_parents; - } - - - /** all_breadcrumbs - * ------------------------------------------------------------------------- - * - * returns an array of all breadcrumbs - * where array-key of each record is category[id] - * - * NOTE: - * --- - * Course_model::all_breadcrumbs returns an indexed super-array; - * each array item includes a banch of information: [ - * breadcrumb, - * rec: [ id , title ], - * parents: [ [id, title] , ... ] - * childs: [ [id, title] , ... ], - * level - * ] - * - * Use Cases: - * --- - * as a super-array, the output can be used in many cases - * for example... - * into <select-option> form elements - * .. while selecting category for a post - * .. or editing a category - * or directry referring to category's parents/childs - * - * Arguments: - * --- - * @param $tree (array) : category tree (with childs and parents parts) - * @param $detimiter (string, optional) : string to split breadcrumb's path-nodes - * @param $exception (int, optional) : id of category to exclude (subcategories shall be excluded too) - * @param $l (int, not-pass) : depth level of the node; DO NOT SET (takes values automaticaly) - * @return array of breadcrumbs - * ------------------------------------------------------------------------- - */ - static public function breadcrumbs($tree, $delimiter = " / ", $exception = 0, $l = 0) - { - $all = []; // results array - - foreach($tree as $node) { // loop through all nodes - - if (intval($node['rec']['id']) != $exception) { // if node is not exception - - // construct breadcrumb html of node - // --- -- -- - - - - $breadcrumb = ""; - foreach($node['parents'] as $par) { // first: join path titles - $breadcrumb .= $par['label'] . $delimiter; - } - $breadcrumb .= $node['rec']['label']; // last: append title - - // make a new super record - // --- -- -- - - - - $all[$node['rec']['id']] = [ // set record is as key - 'breadcrumb' => $breadcrumb, // add breadcrump to results - 'rec' => $node['rec'], // + node info - 'parents' => $node['parents'], // + parents array - 'childs' => self::first_level_childs($node), // + direct childs - 'level' => $l // + level - ]; - - // recursively traverse children nodes - // --- -- -- - - - - if (isset($node['childs']) && $node['childs'] != []) { - $child_breadcrumbs = self::breadcrumbs( - $node['childs'], - $delimiter, - $exception, - $l+1 - ); - - $all = $all + $child_breadcrumbs; // concatenate arrays (keep array-keys) - } - } - - } - return $all; - - } - - /** first_level_childs - * --- -- -- - - - - * used by all_breadcrumbs() - */ - static private function first_level_childs($node) - { - $childs = []; - if ($node['childs'] == []) { - return []; - } - foreach($node['childs'] as $key => $kid) { - $childs[] = [ - 'id' => $kid['rec']['id'], - 'label' => $kid['rec']['label'] - ]; - } - return $childs; - } - - - - - /** LESSONS - * ------------------------------------------------------------------------- - */ - - - /** lessons of course - * - * @param $id (int) : course_id - */ - public static function lessons_of_course($id) - { - // TODO: order results in some way - - return Registry::use('database')->runQuery( - "SELECT lesson.*, lesson_privilege.privilege_id FROM lesson - LEFT JOIN lesson_privilege ON lesson_privilege.lesson_id = lesson.id - WHERE lesson.status = 1 AND lesson.course_id = :id - ORDER BY lesson_privilege.privilege_id ASC", - [':id' => $id] - ); - } - - /** lesson - * - * @param $id (int) : lesson id - */ - public static function lesson($id) - { - // TODO: order results in some way - - return Registry::use('database')->query( - "SELECT lesson.*, lesson_privilege.privilege_id FROM lesson - LEFT JOIN lesson_privilege ON lesson_privilege.lesson_id = lesson.id - WHERE lesson.status = 1 AND lesson.id = :id", - [':id' => $id] - )->getFirst(); - } - - - - /** files - * return all files - * @param void - * @return array - */ - public static function files() - { - return Registry::use('database')->runQuery("SELECT * from media", []); - } - - - /** pages - * - * return all pages as array; - * array key of each item shall be the page-id - * - * @param void - * @return array - */ - public static function pages() - { - $result = []; - $pages = Registry::use('database')->runQuery("SELECT * FROM page", []); - foreach($pages as $key => $page) { - $result[ $page['id'] ] = [ - 'title' => $page['title'], - 'body' => $page['body'], - 'status' => $page['status'] - ]; - } - // print_r($result); die(); - return $result; - } - -} |