全選復選框vue

Question

我正在嘗試創建以下內容：

我收到一組對象。 每個對象由一個 id、一個選項和一個組名組成。 我需要以一種方式輸出數據，首先我有一個帶有組名稱屬性值的復選框，然后是具有相同組屬性的復選框列表。 例如，假設我收到以下數據：

[
{id:1, text: 'Football', group: 'sport'}
{id:2, text: 'Basketball', group: 'sport'}
{id:3, text: 'Cookie', group: 'food'}
{id:4, text: 'Soup', group: 'food'}
]

所以輸出應該如下：

<checkbox which when clicked should select all checkboxes belonging to this group>Sport</checkbox>
<checkbox>Football</checkbox>
<checkbox>Basketball</checkbox>


<checkbox which when clicked should select all checkboxes belonging to this group>Food</checkbox>
<checkbox>Cookie</checkbox>
<checkbox>Soup</checkbox>

到目前為止，我有以下幾點：

 export default { data() { return { actionTypes: actionTypes, relationTypes: relationTypes, optionsList: [ {id:1, text: 'Football', group: 'sport'} {id:2, text: 'Basketball', group: 'sport'} {id:3, text: 'Cookie', group: 'food'} {id:4, text: 'Soup', group: 'food'} ] optionsGroupsList: ['Sport', 'Food'], localValue: [] },

 <link href="https://cdn.jsdelivr.net/npm/vuesax/dist/vuesax.css" rel="stylesheet"/> <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script> <div v-for="group in optionsGroupsList" class="checkbox-group"> <vs-checkbox :vs-value="group" :key="group" > {{ group }} </vs-checkbox> <vs-checkbox v-for="option in optionsList" v-if="option.group === group" :vs-value="option.id" :key="option.id" v-model="localValue" > {{ option.text }} </vs-checkbox> </div>

所以我確實收到了必要的輸出，但我不知道如何使組復選框以選擇屬於它們（該組）的復選框的方式工作

我真的很感激任何想法，提前致謝！

Answer 1

1. 我建議你在一個嵌套的對象數組中構建你的數據（這里計算的是：nestedOptions -method），這樣你的數據看起來像這樣：

nestedOptions: [
  {
    name: "sport",
    options: [
      { id: 1, text: "Football", group: "sport" },
      { id: 2, text: "Basketball", group: "sport" },
    ]
  },
  {
    name:"food"
    options: [...]
  }
]

2. 跟蹤選定的選項以及選定的組。
3. 為所選組設置觀察者...如果它們發生變化，則相應地更改所選選項：

export default {
  name: "groupedOptionsComponent",
  data() {
    return {
      selectedOptions: [],
      selectedGroups: [],
      optionsList: [
        { id: 1, text: "Football", group: "sport" },
        { id: 2, text: "Basketball", group: "sport" },
        { id: 3, text: "Cookie", group: "food" },
        { id: 4, text: "Soup", group: "food" }
      ],
      optionsGroupsList: ["sport", "food"]
    };
  },
  computed: {
    nestedOptions() {
      return this.optionsGroupsList.map(groupName => ({
        name: groupName,
        options: this.optionsList.filter(({ group }) => group === groupName)
      }));
    }
  },
  watch: {
    selectedGroups: function(groups) {
      this.optionsList.forEach(option => {
        if (
          groups.includes(option.group) &&
          !this.selectedOptions.includes(option.id)
        ) {
          this.selectedOptions.push(option.id);
        } else {
          this.selectedOptions = this.optionsList
            .filter(({ group }) => groups.includes(group))
            .map(({ id }) => id);
        }
      });
    }
  }
};

使您的模板看起來像這樣：

<template>
  <div>
    <div v-for="(group, index) in nestedOptions" class="checkbox-group" :key="index">
      <vs-checkbox :vs-value="group.name" v-model="selectedGroups">{{ group.name }}</vs-checkbox>
      <vs-checkbox
        v-for="option in group.options"
        :vs-value="option.id"
        :key="option.id"
        v-model="selectedOptions"
      >{{ option.text }}</vs-checkbox>
    </div>
  </div>
</template>