function sysconfig($field, $value, $fieldinfo) {
        $string = '';
        $require = $fieldinfo['min_length']  ? 'required required_box' : '';
        $pattern = $fieldinfo['pattern'] ?$fieldinfo['pattern']:'';
        $errortips = $fieldinfo['error_tips'] ?$fieldinfo['error_tips']:'';
        $setting = string2array($fieldinfo['setting']);
        $configName = $setting['sysconfig'];
        if($value=='') $value = !empty($fieldinfo['default_value'])?$fieldinfo['default_value']:'';
        $sysconfig = Sysconfig::find()->where("name='".$configName."'")->one();
        if($sysconfig->type==1)  $optionList = json_decode($sysconfig->value,true);
        if($sysconfig->type==2)
        {
            $options = json_decode($sysconfig->value,true);
            foreach($options as $v)
            {
                $optionList[$v] = $v;
            }
        }
        //去除空内容
        $values = explode(',',$value);
        $value = array();
        if(!empty($values))foreach($values as $_k) {
            if($_k != '') $value[] = $_k;
        }
        $value = implode(',',$value);
        $string =  '<div class="mb-3 row '.$require.'" data-pattern = "'.$pattern.'" data-errtips = "'.$errortips.'" data-boxtype="'.$this->fields[$field]['box_type'].'" data-name="'.(in_array($this->fields[$field]['box_type'],['multiple','checkbox'])?"info[$field][]":"info[$field]").'">';
        $string .= '<label class="col-md-2 col-form-label">'.$fieldinfo['name'].'</label>';
        if(isset($optionList)&&isset($this->fields[$field]['box_type']))switch($this->fields[$field]['box_type']) {
            case 'radio':
                $string .= FormElements::radio($optionList,$value,"name='info[$field]' $fieldinfo[form_attribute] class='form-check-input' ",0);
                $string .= $fieldinfo['tips']?'<div class="text-muted  input-word-aux offset-l-2">提示：'.$fieldinfo['tips'].'</div>':'';
            break;
            case 'checkbox':
                $string .= FormElements::checkbox($optionList,$value,"name='info[$field][]' $fieldinfo[form_attribute]  class='form-check-input' ",0);
                $string .= $fieldinfo['tips']?'<div class="text-muted  input-word-aux offset-l-2">提示：'.$fieldinfo['tips'].'</div>':'';
            break;
            case 'select':
                $string .= '<div class="col-md-10">';
                $string .= FormElements::select($optionList,$value,Yii::t('admin','please select'),"name='info[$field]' id='$field'  $fieldinfo[form_attribute] data-dselect-clearable='true' class='form-select $require'");
                $string .= $fieldinfo['tips']?'<div class="text-muted  input-word-aux">提示：'.$fieldinfo['tips'].'</div>':'';
                $string .= '</div>';
            break;
            case 'multiple':
                $string .= '<div class="col-md-10">';
                $string .= FormElements::select($optionList,$value,Yii::t('admin','please select'),"name='info[$field][]' id='$field'  multiple='multiple' data-dselect-clearable='true' class='form-select $require'");
                $string .= $fieldinfo['tips']?'<div class="text-muted  input-word-aux">提示：'.$fieldinfo['tips'].'</div>':'';
                $string .= '</div>';
            break;
        }
        $string  .= '</div>';
        return $string;

    }