src/AppBundle/Twig/CourseExtension.php

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<?php

namespace AppBundle\Twig;

use AppBundle\Util\AvatarAlert;
use Biz\Classroom\Service\ClassroomService;
use Biz\Course\Service\CourseService;
use Biz\Course\Service\MemberService;
use Biz\Course\Util\CourseTitleUtils;
use Biz\System\Service\SettingService;
use Biz\Task\Service\TaskService;
use Codeages\Biz\Framework\Context\Biz;
use Symfony\Component\DependencyInjection\ContainerInterface;
use AppBundle\Common\ArrayToolkit;
use AppBundle\Common\DynUrlToolkit;

class CourseExtension extends \Twig_Extension
{
    /**
     * @var ContainerInterface
     */
    protected $container;

    /**
     * @var Biz
     */
    protected $biz;

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

    public function getFilters()
    {
        return array();
    }

    public function getFunctions()
    {
        return array(
            new \Twig_SimpleFunction('course_show_metas', array($this, 'getCourseShowMetas')),
            new \Twig_SimpleFunction('is_buy_course_from_modal', array($this, 'isBuyCourseFromModal')),
            new \Twig_SimpleFunction('buy_course_need_approve', array($this, 'needApproval')),
            new \Twig_SimpleFunction('is_member_expired', array($this, 'isMemberExpired')),
            new \Twig_SimpleFunction('course_chapter_alias', array($this, 'getCourseChapterAlias')),
            //课程视频转音频完成率
            new \Twig_SimpleFunction('video_convert_completion', array($this, 'getAudioConvertionStatus')),
            new \Twig_SimpleFunction('is_support_enable_audio', array($this, 'isSupportEnableAudio')),
            new \Twig_SimpleFunction('get_course', array($this, 'getCourse')),
            new \Twig_SimpleFunction('course_daily_tasks_num', array($this, 'getCourseDailyTasksNum')),
            new \Twig_SimpleFunction('dyn_url', array($this, 'getDynUrl')),
            new \Twig_SimpleFunction('get_course_types', array($this, 'getCourseTypes')),
            new \Twig_SimpleFunction('is_task_available', array($this, 'isTaskAvailable')),
            new \Twig_SimpleFunction('is_discount', array($this, 'isDiscount')),
            new \Twig_SimpleFunction('get_course_count', array($this, 'getCourseCount')),
            new \Twig_SimpleFunction('is_un_multi_courseset', array($this, 'isUnMultiCourseSet')),
            new \Twig_SimpleFunction('has_mul_courses', array($this, 'hasMulCourses')),
            new \Twig_SimpleFunction('get_course_title', array($this, 'getCourseTitle')),