src/AppBundle/Component/Export/Course/StudentExporter.php

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<?php

namespace AppBundle\Component\Export\Course;

use AppBundle\Common\ArrayToolkit;
use AppBundle\Component\Export\Exporter;

class StudentExporter extends Exporter
{
    public function canExport()
    {
        $user = $this->getUser();
        if ($user->isAdmin()) {
            return true;
        }

        $courseSetting = $this->getSettingService()->get('course', array());
        if (!empty($courseSetting['teacher_export_student'])) {
            $this->getCourseService()->tryManageCourse($this->parameter['courseId'], $this->parameter['courseSetId']);

            return true;
        }

        return false;
    }

    public function getCount()
    {
        return $this->getCourseMemberService()->countMembers($this->conditions);
    }

    public function getTitles()
    {
        $userFields = $this->getUserFieldService()->getEnabledFieldsOrderBySeq();
        $userFieldsTitle = empty($userFields) ? array() : ArrayToolkit::column($userFields, 'title');
        $fields = array(
            'user.fields.username_label',
            'user.fields.email_label',
            'task.learn_data_detail.createdTime',
            'course.plan_task.study_rate',
            'user.fields.truename_label',
            'user.fields.gender_label',
            'user.fileds.qq',
            'user.fileds.wechat',
            'user.fields.mobile_label',
            'user.fields.company_label',
            'user.fields.career_label',
            'user.fields.title_label',
            'student.profile.weibo',
        );

        return array_merge($fields, $userFieldsTitle);
    }

    public function getContent($start, $limit)
    {
        $course = $this->getCourseService()->getCourse($this->parameter['courseId']);
        $translator = $this->container->get('translator');
        $gender = array(
            'female' => $translator->trans('user.fields.gender.female'),