src/AppBundle/Extensions/DataTag/RecommendTeachersDataTag.php

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<?php

namespace AppBundle\Extensions\DataTag;

use AppBundle\Common\ArrayToolkit;

class RecommendTeachersDataTag extends CourseBaseDataTag implements DataTag
{
    /**
     * 获取推荐老师列表.
     *
     * 可传入的参数：
     *   count    必需 老师数量，取值不能超过100
     *
     * @param array $arguments 参数
     *
     * @return array 推荐老师列表
     */
    public function getData(array $arguments)
    {
        $this->checkCount($arguments);
        $conditions = array(
            'roles' => 'ROLE_TEACHER',
            'promoted' => '1',
            'locked' => 0,
        );

        $users = $this->getUserService()->searchUsers($conditions, array(
            'promoted' => 'DESC',
            'promotedSeq' => 'ASC',
            'promotedTime' => 'DESC',
            'createdTime' => 'DESC',
        ), 0, $arguments['count']);

        $promotedSeq = ArrayToolkit::column($users, 'promotedSeq');
        $promotedTime = ArrayToolkit::column($users, 'promotedTime');
        array_multisort($promotedSeq, SORT_ASC, $promotedTime, SORT_DESC, $users);

        $profiles = $this->getUserService()->findUserProfilesByIds(ArrayToolkit::column($users, 'id'));
        $user = $this->getCurrentUser();

        if ($user->isLogin()) {
            $myfollowings = $this->getUserService()->filterFollowingIds($user['id'], ArrayToolkit::column($users, 'id'));
        } else {
            $myfollowings = array();
        }

        foreach ($users as $key => $user) {
            if ($user['id'] == $profiles[$user['id']]['id']) {
                $users[$key]['about'] = $profiles[$user['id']]['about'];
                $users[$key]['profile'] = $profiles[$user['id']];
            }

            $users[$key]['isFollowed'] = in_array($user['id'], $myfollowings) ? 1 : 0;
        }

        return $this->unsetUserPasswords($users);
    }
}