Vue:如何将商店与组件一起使用?
Vue: How to use store with component?
//商店
export default {
state: {
aboutModels: []
},
actions: {
findBy: ({commit}, about)=> {
//do getModels
var aboutModels = [{name: 'About'}] //Vue.resource('/abouts').get(about)
commit('setModels', aboutModels)
}
},
getters: {
getModels(state){
return state.aboutModels
}
},
mutations: {
setModels: (state, aboutModels)=> {
state.aboutModels = aboutModels
}
}
}
//组件
import {mapActions, mapGetters} from "vuex";
export default {
name: 'About',
template: require('./about.template'),
style: require('./about.style'),
created () {
document.title = 'About'
this.findBy()
},
computed: mapGetters({
abouts: 'getModels'
}),
methods: mapActions({
findBy: 'findBy'
})
}
//查看
<div class="about" v-for="about in abouts">{{about.name}}</div>
//错误
vue.js:2532[Vue warn]: Cannot use v-for on stateful component root element because it renders multiple elements:
<div class="about" v-for="about in abouts">{{about.name}}</div>
vue.js:2532[Vue warn]: Multiple root nodes returned from render function. Render function should return a single root node. (found in component <About>)
您正在正确映射 Vuex 状态获取器和操作。正如您的错误消息所述,您的问题是其他问题...
在您的组件模板中,您不能在根元素上使用 v-for
指令。例如,这是不允许的,因为您的组件可以有多个根元素:
<template>
<div class="about" v-for="about in abouts">{{about.name}}</div>
</template>
改为这样做:
<template>
<div>
<div class="about" v-for="about in abouts">{{about.name}}</div>
</div>
</template>
** *修复了模板标签中的拼写错误 **
//商店
export default {
state: {
aboutModels: []
},
actions: {
findBy: ({commit}, about)=> {
//do getModels
var aboutModels = [{name: 'About'}] //Vue.resource('/abouts').get(about)
commit('setModels', aboutModels)
}
},
getters: {
getModels(state){
return state.aboutModels
}
},
mutations: {
setModels: (state, aboutModels)=> {
state.aboutModels = aboutModels
}
}
}
//组件
import {mapActions, mapGetters} from "vuex";
export default {
name: 'About',
template: require('./about.template'),
style: require('./about.style'),
created () {
document.title = 'About'
this.findBy()
},
computed: mapGetters({
abouts: 'getModels'
}),
methods: mapActions({
findBy: 'findBy'
})
}
//查看
<div class="about" v-for="about in abouts">{{about.name}}</div>
//错误
vue.js:2532[Vue warn]: Cannot use v-for on stateful component root element because it renders multiple elements:
<div class="about" v-for="about in abouts">{{about.name}}</div>
vue.js:2532[Vue warn]: Multiple root nodes returned from render function. Render function should return a single root node. (found in component <About>)
您正在正确映射 Vuex 状态获取器和操作。正如您的错误消息所述,您的问题是其他问题...
在您的组件模板中,您不能在根元素上使用 v-for
指令。例如,这是不允许的,因为您的组件可以有多个根元素:
<template>
<div class="about" v-for="about in abouts">{{about.name}}</div>
</template>
改为这样做:
<template>
<div>
<div class="about" v-for="about in abouts">{{about.name}}</div>
</div>
</template>
** *修复了模板标签中的拼写错误 **