请问老师，我这里显示的页面没有 显示 其他字段 页，配制如下：
class NewCourseAdmin:
list_display = [‘name’, ‘desc’, ‘degree’, ‘learn_time’, ‘students’]
search_fields = [‘name’, ‘desc’, ‘degree’, ‘students’]
list_filter = [‘name’, ‘teacher__name’, ‘desc’, ‘degree’, ‘learn_time’, ‘students’]
list_editable = [‘degree’, ‘desc’]

def get_form_layout(self):
    self.form_layout = (
        Main(
            Fieldset("讲师信息",
                     "teacher", "course_org",
                     css_class='unsort no_title',
                     ),
            Fieldset("基本信息",
                     "name", "desc",
                     Row('learn_time', 'degree'),
                     css_class='unsort'
                     ),
        )
    )
    return super(NewCourseAdmin, self).get_form_layout()

请问是什么原因呢？