使用 Vue.js 进行异步等待 axios 调用

我的设置有点问题.我的Vue中的价值观.js应用程序.我认为我要么没有正确理解async axios调用，要么没有正确理解async在Vue中的工作方式.js.

我有以下三种方法:

updateAvailability(availability) {
    if (availability == true) {
        this.showYourDetails();
    } else {
        this.showBookingDetails();
    }
},
checkAvailability: async function(event) {
    event.preventDefault();
    const availability = await this.handleAvailabilityRequest(event);
    this.loading = true;
    console.log(availability); //This evaluates to undefined
    const availabilityUpdate = await this.updateAvailability(availability);
    this.loading = false;
},
handleAvailabilityRequest: async function(event) {
    event.preventDefault();
    let valid = this.validateFieldsForAvailabilityRequest(); //Ignore this for this particular question, assume valid is always true

    if (valid) { // This is true
        let config = {
            headers: {
                "X-CSRFToken": this.csrfToken,
                "Content-Type": 'application/x-www-form-urlencoded',
            }
        }

        let formData = new FormData();
        let reservationTime = this.reservationHourSelected + ':' + this.reservationMinuteSelected;

        formData.set('type', 'availability_request');
        formData.set('session_name', this.sessionName);
        formData.set('reservation_party_size', this.reservationPartySize);
        formData.set('reservation_date', this.reservationDate);
        formData.set('reservation_time', reservationTime);

        await axios.post('{{ request_absolute_uri }}', formData, config).then(function(response) {
            this.availabilityMessage = response.data.message;
        }).catch(function(error) {
            this.availabilityMessage = false;
            console.log(error);
        });
    }
    return this.availabilityMessage;
}

我的response.data.message从我的框架中被传递回True/True，但似乎我没有从await this.handleAvailabilityRequest()函数返回任何内容？当日志(log)显示我想要的一切时，帖子肯定会击中服务器——然后在json响应上下文中返回message=true.

所以，我想...帮助除了等待promise 的问题之外，我完全目瞪口呆地想知道为什么这不起作用...