我挑战自己编写一个应用程序,从 API 获取数据并将其显示在各种组件中。我对 VueJS 还很陌生。我使用 VueResource 来访问 API,使用 VueX 来进行状态管理。
我已经设置了我的商店,我添加了操作、突变和吸气剂等,一旦我添加created
我的组件中的生命周期方法出现错误:
ReferenceError: Vue is not defined
at Store.eval (eval at <anonymous> (build.js:1017), <anonymous>:11:3)
at Array.wrappedActionHandler (eval at <anonymous> (build.js:1338), <anonymous>:711:23)
at Store.dispatch (eval at <anonymous> (build.js:1338), <anonymous>:433:15)
...
我的代码如下所示:
main.js
import Vue from 'vue'
import App from './App.vue'
import VueResource from 'vue-resource'
import store from './store/store'
Vue.use(VueResource);
new Vue({
el: '#app',
store,
render: h => h(App)
})
store.js
import Vue from 'vue'
import Vuex from 'vuex'
import actions from './actions'
import mutations from './mutations'
import getters from './getters'
Vue.use(Vuex)
const store = new Vuex.Store({
state: {
products: []
},
getters,
actions,
mutations
})
export default store
App.vue
<template>
...
</template>
<script>
import { FETCH_MEALS } from './store/types';
export default {
//load meals on page load
created() {
this.$store.dispatch(FETCH_MEALS)
},
computed: {
meals() {
return this.$store.getters.meals
},
salads() {
return this.$store.getters.salads
},
lunches() {
return this.$store.getters.lunches
},
starters() {
return this.$store.getters.starters
}
}
}
</script>
我被困住了,我不知道我做错了什么。你有什么想法?
UPDATE
我使用 vue-cli 生成的典型样板并使用 Webpack 构建 main.js。
动作.js
import { API_ROOT } from '../config'
import * as types from './types';
export default {
[types.FETCH_MEALS]: ({commit}) => {
Vue.http.get(API_ROOT + '/meals.json')
.then(response => response.data)
.then(meals => {
commit(types.SET_MEALS, meals)
})
}
};
突变.js
import * as types from './types';
export default {
[types.MUTATE_UPDATE_VALUE]: (state, payload) => {
state.value = payload;
}
};
getters.js
import * as types from './types';
export default {
[types.VALUE]: state => {
return state.value;
}
};