vue 使用i18n 实现中英文切换 表单校验提示不更新问题

在用i18n实现中英文切换的时候，出现了在表单中校验不更新的问题，尝试多种方式无果，下面这个方法值得一试。可轻松解决此问题。

data(){
    ruleInline: { 
        userName: [ { required: true, message:this.$t("insight.form.AccountEmpty"), trigger: ["change", "blur"] } ], 
        password: [ { required: true, message:this.$t("insight.form.passwordEmpty"), trigger: ["change", "blur"] } ], 
        identify: [{ required: true, message:this.$t("verificationCode"), trigger: "blur" }]
　　}
}        

methods: {
    aaa() {
      this.ruleInline = {
        userName: [
          {
            required: true,
            message: this.$t("insight.form.AccountEmpty"),
            trigger: ["change", "blur"]
          }
        ],
        password: [
          {
            required: true,
            message: this.$t("insight.form.passwordEmpty"),
            trigger: ["change", "blur"]
          }
        ],
        identify: [{ required: true, message: this.$t("verificationCode"), trigger: "blur" }]
      }
    }
}

watch: {
    "$i18n.locale": function () {
      this.aaa();
    }
 },
mounted() {
   this.aaa();
}