我正在开发一个 Nativescript-Vue 应用程序,并且我正在尝试使用 Vuex 从 Timepicker 存储小时和分钟以在其他页面中使用。我已经尝试使用计算属性来捕获事件,但是有没有更好的方法来使用 Vue 来做到这一点?
这是我所拥有的:
// In NotifyTimePicker.vue (a custom Time-picking modal)
// Template:
<TimePicker row="2" col="0" colSpan="3" horizontalAlignment="center" :hour="selectedFromHour" :minute="selectedFromMinute" />
//Script
computed: {
selectedFromHour: {
get: function () {
return this.$store.state.notifyFromTimeHour
},
set: function (newValue) {
console.log(`Attempting to Update Store with new From Hour = ${newValue}`)
this.$store.commit('changeNotifyFromTimeHour', newValue)
}
},
selectedFromMinute: {
get: function () {
return this.$store.state.notifyFromTimeMinute
},
set: function (newValue) {
console.log(`Attempting to Update Store with new From Minute = ${newValue}`)
this.$store.commit('changeNotifyFromTimeMinute', newValue)
}
},
},
然后,在我的 Vuex 商店中:export default new Vuex.Store({
state: {
notifyFromTimeHour: 9,
notifyFromTimeMinute: 30,
},
mutations: {
changeNotifyFromTimeHour (state, hour) {
state.notifyFromTimeHour = hour
},
changeNotifyFromTimeMinute (state, minute) {
state.notifyFromTimeMinute = minute
},
},
actions: {
}
});
似乎商店中的默认值可以很好地拉入组件中,但是当更改选择器中的时间时,计算函数的“设置”部分永远不会触发,而且我从来没有看到我的 console.logs 触发。我应该听不同的变化事件吗?文档 here对此不做详细介绍。
谢谢您的帮助!
最佳答案
由于 Vue 中的所有 Prop 都是单向绑定(bind)的,因此 Timepicker
props 仅用于设置初始值。
相反,您可以使用 v-model
与计算的 getter 和 setter 绑定(bind),从您的商店读取/写入
<TimePicker
row="2"
col="0"
colSpan="3"
horizontalAlignment="center"
v-model="selectedTime"
/>
export default {
computed: {
selectedTime: {
get () {
const time = new Date()
time.setHours(
this.$store.state.notifyFromTimeHour,
this.$store.state.notifyFromTimeMinute)
return time
},
set (time) {
this.$store.commit('changeNotifyFromTimeHour', time.getHours())
this.$store.commit('changeNotifyFromTimeMinute', time.getMinutes())
}
}
}
}
或者,要收听更新,您需要使用
timeChange
event<TimePicker
row="2"
col="0"
colSpan="3"
horizontalAlignment="center"
:hour="selectedFromHour"
:minute="selectedFromMinute"
@timeChange="changeTime"
/>
import { mapState } from "vuex"
export default {
computed: mapState({
selectedFromHour: "notifyFromTimeHour",
selectedFromMinute: "notifyFromTimeMinute"
}),
methods: {
changeTime (payload) {
// documentation doesn't say what the event payload is, let's assume it's a Date
this.$store.commit('changeNotifyFromTimeHour', payload.getHours())
this.$store.commit('changeNotifyFromTimeMinute', payload.getMinutes())
}
}
}
关于javascript - Nativescript Vue Timepicker 与 Vuex,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/63523009/