//TeacherCOntroller.js
getAllTeacher : async function(req, res){
        // var teacher = await Teacher.getAllTeachers();
        // return res.send(teacher);
        var params = req.allParams();

        var classId = params.classId ? parseInt(params.classId) : 0;
        var keyword = params.keyword ? params.keyword.trim() : 0;

        var list_teacher = await Teacher.getAllTeachers(classId, keyword);

        return res.send(list_teacher);
    },