src/AppBundle/Twig/TestpaperExtension.php

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<?php

namespace AppBundle\Twig;

use Biz\Course\Service\MemberService;
use Biz\System\Service\SettingService;
use Symfony\Component\DependencyInjection\ContainerInterface;

class TestpaperExtension extends \Twig_Extension
{
    protected $biz;

    /**
     * @var ContainerInterface
     */
    protected $container;

    public function __construct($container, $biz)
    {
        $this->container = $container;
        $this->biz = $biz;
    }

    public function getFilters()
    {
        return array(
            new \Twig_SimpleFilter('parse_exercise_range', array($this, 'parseRange')),
        );
    }

    public function getFunctions()
    {
        return array(
            new \Twig_SimpleFunction('find_course_set_testpapers', array($this, 'findTestpapersByCourseSetId')),
            new \Twig_SimpleFunction('get_features', array($this, 'getFeatures')),
            new \Twig_SimpleFunction('show_answers', array($this, 'canShowAnswers')),
        );
    }

    public function parseRange($range)
    {
        $rangeDefault = array('courseId' => 0);
        $range = empty($range) ? $rangeDefault : $range;

        if (is_array($range)) {
            return $range;
        } elseif ('course' == $range) {
            return $rangeDefault;
        } elseif ('lesson' == $range) {
            //兼容老数据
            $conditions = array(
                'activityId' => $activity['id'],
                'type' => 'exercise',
                'courseId' => $activity['fromCourseId'],
            );
            $task = $this->getCourseTaskService()->searchTasks($conditions, null, 0, 1);

            if (!$task) {
                return $rangeDefault;
            }