如何在Vue中正确初始化表单数据

Question

所以我有一个正在渲染表单的组件，它还使用从 ajax 请求接收到的数据预先填充字段。

我的问题是，我不仅希望能够编辑字段，还希望同时添加要提交的新字段，因此我尝试将预填充的数据和新数据初始化到要提交的同一个对象中与我的ajax请求。根据我当前的设置，表单数据在呈现表单之前并没有始终如一地填充字段。

这是表单模板

<form @submit.prevent="editThisWorkflow" class="d-flex-column justify-content-center" >

 <div>
   <input type="text" v-model="workflowData.workflow">
    </div>
    <div >
    <div v-for="object in workflowData.statuses" :key="object.id">
    <input type="text" v-model="object.status">
    </div>
    <div v-for="(status, index) in workflowData.newStatuses" :key="index">
    <input type="text" placeholder="Add Status" v-model="status.value">
    <button type="button" @click="deleteField(index)">X</button>
    </div>
    <button type="button" @click="addField">
      New Status Field
    </button>
    </div>
    <div>
    <div>
    <button type="submit">Save</button>
    <router-link  :to="{ path: '/administrator/workflows'}" >Cancel</router-link>
  </div>
 </div>

</form>

这是脚本

data() {
        return {
            workflowData: {
                id: this.$store.state.workflow.id,
                workflow: this.$store.state.workflow.workflow,
                statuses: this.$store.state.workflow.statuses,
                newStatuses: []
            },
            workflowLoaded: false
        }
    },
    computed: {
    ...mapGetters(['workflow']),
  },
  methods: {
    ...mapActions(['editWorkflow']),
    editThisWorkflow() {
        this.editWorkflow({
           id: this.workflowData.id,
           workflow: this.workflowData.workflow,
           statuses: this.workflowData.statuses,
           newStatuses: this.workflowData.newStatuses
        })
    },
    addField() {
        this.workflowData.newStatuses.push({ value: ''});
    },
    deleteField(index) {
        this.workflowData.newStatuses.splice(index, 1);
    }

这是提交数据的store方法

editWorkflow(context, workflowData) {
      axios.patch('/workflowstatuses/' + workflowData.id, {
        workflow: workflowData.workflow,
        statuses: workflowData.statuses,
        newStatuses: workflowData.newStatuses
      })
      .then(response => {
          context.commit('editWorkflow', response.data)
      })
      .catch(error => {
          console.log(error.response.data)
      })           
    },

我的问题就出在这里

 data() {
        return {
            workflowData: {
                id: this.$store.state.workflow.id,
                workflow: this.$store.state.workflow.workflow,
                statuses: this.$store.state.workflow.statuses,
                newStatuses: []
            },
            workflowLoaded: false
        }
    },

有没有更好的方法来设置这部分？

workflowData: {
    id: this.$store.state.workflow.id,
    workflow: this.$store.state.workflow.workflow,
    statuses: this.$store.state.workflow.statuses,
    newStatuses: []
},

Answer 1

如果您只需要将存储值分配给表单一次，那么您可以使用安装函数。

mounted: function() {
   this.id = this.$store.state.workflow.id
   this.workflow = this.$store.state.workflow.workflow
   this.statuses = this.$store.state.workflow.statuses
},
data() {
      return {
          workflowData: {
              id: '',
              workflow: '',
              statuses: '',
              newStatuses: []
          },
          workflowLoaded: false
      }
 },