Joomla! 5.x Coding • Filter by categories and category title in the list of items

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<?phpnamespace VPJoomla\Component\Workers\Administrator\Model;use Joomla\CMS\Factory;use Joomla\CMS\MVC\Model\ListModel;use Joomla\CMS\Table\Table;use Joomla\Database\ParameterType;use Joomla\Utilities\ArrayHelper;defined('_JEXEC') or exit();class WorkersModel extends ListModel {/** * Конструктор. * @param   array  $config  Массив с конфигурационными параметрами. */public function __construct($config = []){// Добавляем валидные поля для фильтров и сортировки.if (empty($config['filter_fields'])) {$config['filter_fields'] = array(            'id', 'a.id',            'name', 'a.name','catid', 'a.catid', 'category_title','alias', 'a.alias','country', 'a.country','city', 'a.city','sex', 'a.sex','availability', 'a.availability',            'ordering', 'a.ordering',            'state', 'a.state',            'created', 'a.created',            'modified', 'a.modified'        );}parent::__construct($config);}/**     * Method to get a list of items.     *     * @return  mixed   An array of data items on success, false on failure.     */    public function getItems()    {        $items = parent::getItems();         return $items;    }/** * Метод для построения SQL запроса для загрузки списка данных. * @return  string  SQL запрос. */protected function getListQuery(): string{$db    = $this->getDatabase();        $query = $db->getQuery(true);$query->select(            $this->getState(                'list.select',                [                    $db->quoteName('a.id'),                    $db->quoteName('a.name'),                $db->quoteName('a.catid'),                $db->quoteName('a.alias'),                $db->quoteName('a.country'),                $db->quoteName('a.city'),                $db->quoteName('a.sex'),                $db->quoteName('a.availability'),                    $db->quoteName('a.state'),                    $db->quoteName('a.created'),                    $db->quoteName('a.modified'),$db->quoteName('a.ordering'),]            )        )->select($db->quoteName('c.title', 'category_title'))->from($db->quoteName('#__workers', 'a'))->where($db->quoteName('wa.extension') . ' = ' . $db->quote('com_workers.worker'))->join('LEFT', $db->quoteName('#__categories', 'c'), $db->quoteName('c.id') . ' = ' . $db->quoteName('a.catid'));        // Фильтр по состоянию полученному из запроса        $published = (string) $this->getState('filter.published');        if (is_numeric($published))        {            $query->where($db->quoteName('a.state') . ' = '.$published);        }        elseif ($published === '')        {            $query->where('(' . $db->quoteName('a.state') . ' = 0 OR ' . $db->quoteName('a.state') . ' = 1)');        }// Фильтр по категории$categoryId = $this->getState('filter.category_id', []);if (!\is_array($categoryId)) {$categoryId = $categoryId ? [$categoryId] : [];}if (\count($categoryId)) {$categoryId       = ArrayHelper::toInteger($categoryId);$categoryTable    = Table::getInstance('Category', '\\Joomla\\CMS\\Table\\');$subCatItemsWhere = [];foreach ($categoryId as $key => $filter_catid) {$categoryTable->load($filter_catid);// Because values to $query->bind() are passed by reference, using $query->bindArray() here instead to prevent overwriting.$valuesToBind = [$categoryTable->lft, $categoryTable->rgt];// Bind values and get parameter names.$bounded = $query->bindArray($valuesToBind);$categoryWhere = $db->quoteName('c.lft') . ' >= ' . $bounded[0] . ' AND ' . $db->quoteName('c.rgt') . ' <= ' . $bounded[1];$subCatItemsWhere[] = '(' . $categoryWhere . ')';}$query->where('(' . implode(' OR ', $subCatItemsWhere) . ')');}//Фильтр поиска по стране$country = $this->getState('filter.country');if (!empty($country)) {$query->where($db->quoteName('a.country') . ' = ' . $db->quote($country));}//Фильтр поиска по полу$sex = (int) $this->getState('filter.sex');if ($sex) {$query->where($db->quoteName('a.sex') . ' = ' . $db->quote($sex));}//Фильтр поиска по доступности$availability = (string) $this->getState('filter.availability');if (\in_array($availability, ['0','1'])) {$availability = (int) $availability;$query->where($db->quoteName('a.availability') . ' = :availability')->bind(':availability', $featured, ParameterType::INTEGER);}         // Фильтр поиска по названию.        $search = $this->getState('filter.search');         if (!empty($search))        {            $search = $db->quote('%' . str_replace(' ', '%', $db->escape(trim($search), true) . '%'));            $query->where('(a.name LIKE ' . $search . ')');        }// Добавляем сортировку.$orderCol  = $this->state->get('list.ordering', 'id');$orderDirn = $this->state->get('list.direction', 'desc');$query->order($db->escape($orderCol . ' ' . $orderDirn));return $query;}protected function populateState($ordering = 'a.id', $direction = 'desc'){    $app = Factory::getApplication();    $input = $app->input;    $search = $this->getUserStateFromRequest($this->context . '.filter.search', 'filter_search');    $this->setState('filter.search', $search);    $published = $this->getUserStateFromRequest($this->context . '.filter.published', 'filter_published', '');    $this->setState('filter.published', $published);$country = $this->getUserStateFromRequest($this->context . '.filter.country', 'filter_country', '');$this->setState('filter.country', $country);$sex = $this->getUserStateFromRequest($this->context . '.filter.sex', 'filter_sex', '');$this->setState('filter.sex', $sex);$availability = $this->getUserStateFromRequest($this->context . '.filter.availability', 'filter_availability', '');$this->setState('filter.availability', $availability);    // Set the default ordering and direction if not already set    parent::populateState($ordering, $direction);}protected function getStoreId($id = ''): string{// Compile the store id.$id .= ':' . $this->getState('filter.search');$id .= ':' . serialize($this->getState('filter.category_id'));$id .= ':' . $this->getState('filter.country');$id .= ':' . $this->getState('filter.sex');$id .= ':' . $this->getState('filter.availability');return parent::getStoreId($id);}/* Prepare a faqcontentiten record for saving in the database */protected function prepareTable($table): void    {// Set ordering to the last item if not setif (empty($table->ordering)){$db = $this->getDatabase();$query = $db->getQuery(true)->select('MAX(ordering)')->from('#__workers');$db->setQuery($query);$max = $db->loadResult();$table->ordering = $max + 1;}}    /**     * Method to change the published state of one or more records.     *     * @param array    &$pks   A list of the primary keys to change.     * @param integer $value  The value of the published state.     *     * @return  boolean  True on success.     *     * @since   4.0.0     */    public function publish(array &$pks, int $value = 1) {        if (empty($pks)) {            return false; // No records to update        }        $db = $this->getDatabase();        // Sanitize the value        $value = (int) $value;        try {            $query = $db->getQuery(true)                ->update($db->quoteName('#__workers'))                ->set($db->quoteName('state') . ' = ' . $value)                ->whereIn($db->quoteName('id'), $pks);            $db->setQuery($query);            $db->execute();            return true;        } catch (\Exception $e) {            return false;        }    }    /**     * Method to change the published state of one or more records to unpublished.     *     * @param array &$pks A list of the primary keys to change.     *     * @return  boolean  True on success.     */    public function unpublish(array &$pks) {        return $this->publish($pks, 0);    }    /**     * Method to change the published state of one or more records to archived.     *     * @param array &$pks A list of the primary keys to change.     *     * @return  boolean  True on success.     */    public function archive(array &$pks) {        return $this->publish($pks, 2);    }    /**     * Method to change the published state of one or more records to trashed.     *     * @param array &$pks A list of the primary keys to change.     *     * @return  boolean  True on success.     */    public function trash(array &$pks) {        return $this->publish($pks, -2);    }}

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<?xml version="1.0" encoding="utf-8"?><form>    <fields name="filter">        <field                name="search"                type="text"                hint="JSEARCH_FILTER"        />        <field                name="published"                type="status"                label="JOPTION_SELECT_PUBLISHED"                class="js-select-submit-on-change"                extension="com_workers"        >            <option value="">JOPTION_SELECT_PUBLISHED</option>        </field>        <field                name="category_id"                type="category"                label="JCATEGORY"                multiple="true"                extension="com_workers"                layout="joomla.form.field.list-fancy-select"                hint="JOPTION_SELECT_CATEGORY"                class="js-select-submit-on-change"                published="0,1,2"        />        <field                name="country"                type="country"                label="COM_WORKERS_WORKERS_SELECT_COUNTRY"                class="js-select-submit-on-change"        >            <option value="">COM_WORKERS_WORKERS_SELECT_COUNTRY</option>        </field>        <field                name="sex"                type="sex"                label="COM_WORKERS_WORKERS_SELECT_SEX"                class="js-select-submit-on-change"        >            <option value="">COM_WORKERS_WORKERS_SELECT_SEX</option>        </field>        <field                name="availability"                type="availability"                label="COM_WORKERS_WORKERS_SELECT_AVAILABILITY"                class="js-select-submit-on-change"        >            <option value="">COM_WORKERS_WORKERS_SELECT_AVAILABILITY</option>        </field>    </fields>    <fields name="list">        <field name="fullordering"               type="list"               label="JGLOBAL_SORT_BY"               class="js-select-submit-on-change"               default="a.published DESC"               validate="options"        >            <option value="">JGLOBAL_SORT_BY</option>            <option value="a.ordering ASC">JGRID_HEADING_ORDERING_ASC</option>            <option value="a.ordering DESC">JGRID_HEADING_ORDERING_DESC</option>            <option value="category_title ASC">JCATEGORY_ASC</option>            <option value="category_title DESC">JCATEGORY_DESC</option>            <option value="a.state ASC">JSTATUS_ASC</option>            <option value="a.state DESC">JSTATUS_DESC</option>            <option value="a.created ASC">JDATE_ASC</option>            <option value="a.created DESC">JDATE_DESC</option>            <option value="a.modified ASC">COM_WORKERS_MODIFIED_ASC</option>            <option value="a.modified DESC">COM_WORKERS_MODIFIED_DESC</option>            <option value="a.name ASC">COM_WORKERS_NAME_ASC</option>            <option value="a.name DESC">COM_WORKERS_NAME_DESC</option>            <option value="a.id ASC">JGRID_HEADING_ID_ASC</option>            <option value="a.id DESC">JGRID_HEADING_ID_DESC</option>        </field>        <field                name="limit"                type="limitbox"                label="JGLOBAL_LIST_LIMIT"                default="25"                class="js-select-submit-on-change"        />    </fields></form>