Question

我已经设置了vuex，我想稍后获取数据并更新我的表单模型但是这会失败

在我的vuex

中

  //state
  const state = {
   profile: [],
  }

  //getter
  const getters = {
   profileDetails: state => state.profile,
  }

 //the actions
 const actions = {
    getProfileDetails ({ commit }) {
        axios.get('/my-profile-details')
             .then((response) => {
               let data = response.data;
               commit(types.RECEIVED_USERS, {data});
              },
             );
     }
  }



 const mutations = {
  [types.RECEIVED_USERS] (state, { data }) {
    state.profile = data;
   state.dataloaded = true;
  },

}

现在在我的vue js文件中

export default{

    data: () => ({
       profile_form:{
           nickname:'',
           first_name:'',
           last_name:'',
           email:''
       }

    }),

    computed:{
        ...mapGetters({
            user: 'profileDetails',
        }),

    },

   methods:{
       setUpDetails(){
            this.profile_form.email = this.user.email; //the value is always undefined
        }
    },

    mounted(){
        this.$store.dispatch('getProfileDetails').then(
            (res)=>{
                console.log(res); //this is undefined
             this.setUpDetails(); ///this is never executed
            }
        );
        this.setUpDetails(); //tried adding it here
    }

通过使用vue开发人员工具检查，我可以看到vuex有数据但我的组件在调用动作中的调度后才能获取数据。

我哪里出错。

Nb：AM使用数据来更新这样的表格

<input  v-model="profile_form.email" >

Answer 1

您的挂载方法需要getProfileDetails的返回（res），但操作不会返回任何内容，因此您只需尝试

 const actions = {
    getProfileDetails ({ commit }) {
      return axios.get('/my-profile-details')
        .then((response) => {
          let data = response.data;
          commit(types.RECEIVED_USERS, {data});
          return data // put value into promise
        },
      );
    }
  }

然而，更常见的是承诺从动作中存储（你正在做）并让组件从getter（你有）获取新值 - 即单向数据 - 流。

我就是这样设置的。

data: () => ({
  profile_form:{
    nickname:'',
    first_name:'',
    last_name:'',
    email:''
  }
}),

mounted(){
  this.$store.dispatch('getProfileDetails')
}

computed: {
  ...mapGetters({
    user: 'profileDetails',
  }),
}

watch: {
  user (profileData){
    this.profile_form = Object.assign({}, profileData);
    }
},

methods:{
  submit(){
    this.$store.commit('submituser', this.profile_form)
  }
},

Vue js2 vuex更新表单v模型值

1 个答案: