Vue.js disable component during ajax request

问题

I'm looking for a simple solution for the following problem:

I have a Vue component button with which I can make an ajax request. I would like to disable this button while the request is pending (to prevent multiple requests).

回答1:

Sounds like you want your action to set (commit) a flag when it starts and then clear it when it ends.

Try something like this in Vuex...

state: {
  loading: false
},
mutations: {
  isLoading (state) {
    state.loading = true
  },
  doneLoading (state) {
    state.loading = false
  }
},
actions: {
  doAjaxRequest ({ commit }) {
    commit('isLoading')
    return doSomeAjaxRequest().then(res => {
      // success
    }).catch(err => {
      // oh noes
    }).finally(() => {
      commit('doneLoading')
    })
  }
}

Now in your component, you can map the loading state and use it to disable your button, eg

<template>
  <button :disabled="loading" @click="doAjaxRequest">Do AJAX!</button>
</template>
<script>
  import { mapState, mapActions } from 'vuex'
  export default {
    computed: mapState(['loading']),
    methods: mapActions(['doAjaxRequest'])
  }
</script>

Alternatively, you can maintain the progress of the request within your component if your action returns a promise (as above). For example, say your button has

<button :disabled="loading" @click="doTheThing">Do the thing!</button>

and

data () {
  return { loading: false }
},
methods: {
  doTheThing() {
    this.loading = true
    this.$store.dispatch('someAjaxActionThatReturnsAPromise').finally(() => {
      this.loading = false
    })
  }
}

回答2:

State.js:

state: {
  pendingRequest: false
},
actions: {
  fetchRequest: async function(context) {
    context.state.pendingRequest = true
    let req = await fetch(url)
    let data = await req.json()
    context.state.pendingRequest = false
  }
}

Component.vue:

<button :disabled='$store.state.pendingRequest' @click="$store.dispatch('fetchRequest')">Button</button>

回答3:

I found another solution: It automatically generates a vuex module for the registered endpoints, watch those endpoints via axios interceptors and sets the proper 'pending' state values based on the status of the related requests.

https://github.com/pharkasbence/pending-request-tracker

来源：https://stackoverflow.com/questions/51967632/vue-js-disable-component-during-ajax-request

标签

Vue.js

vue-component

vuex