What is the best way to adjust the placement of a component to remain in sync with the v-model it is connected to?

I am encountering an issue with 2 sliders in my project. I have set it up so that when the lower slider's value is greater than 0, the top slider should automatically be set to 5. I am using a watcher function for this purpose. However, if I manually change the position of the top slider, it does not visually snap back to the 5 position even though its value remains at 5. How can I make it return to the correct position visually?

https://jsfiddle.net/omz36csL/29/

HTML

<div id="app">
  <v-app>
    <v-card class="pa-5 ma-2">
      <v-row v-for="(dummy, index) in dummyData" :key="index">
        <v-slider v-model="dummyData[index]" :min="0" :max="5" type="numbers" single-line hide-details>
        </v-slider>
        <v-chip>{{dummyData[index]}}</v-chip>
      </v-row>
    </v-card>
  </v-app>
</div>

JS

Vue.use(Vuetify);

var vm = new Vue({
  el: "#app",

  data: {
    dummyData: [1, 0]
  },
  watch: {
    dummyData(val) {
      if (val[1] > 0) {
        this.dummyData[0] = 5
      }
    }
  }
});

Answer №1

Observing a computed property is usually the preferred approach.

Vue.use(Vuetify);

var vm = new Vue({
  el: "#app",

  data: {
    dummyData: [1, 0]
  },
  methods: {
   performAction() {
      if (this.dummy > 0) {
        this.dummyData[0] = 5
      } 
   }
  },
  watch: {
    dummy: "performAction"
  },
  computed: {
   dummy () {
     return this.dummyData[1];
   }
  }
});

UPDATE:

<v-slider
  v-model="dummyData[index]"
  :min="0" :max="5" type="numbers" single-line hide-details 
  :class="{'no-pointer-events': index === 0 && dummyData[index + 1] > 0}">
</v-slider>

.no-pointer-events {pointer-events: none}

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