Show/Hide columns dynamically with a bootstrap-vue component and bootstrap 3

问题

I am currently trying to show/hide dynamically with a bootstrap-vue table (https://bootstrap-vue.js.org/docs/components/table).

So far, I only managed to hide the header but the cells won't disappear, which is a problem because the cells are not in front of the good headers (the numbers should be under days and 'ingredient' should be under item.

Here what's 'worked':

fields: [
{key: "day", label: "Day",sortable: true, thStyle:"display:none"},
{key: "item", label: "Item",sortable: true}
]

I was wondering if it was possible to maybe do that outside of vueJS, and change the properties of the column with CSS directly..

Thanks for the help !

Louis

回答1:

You could add an additional property to your fields. For example visible and create a computed property that filters out all fields with visible: false.

That way you can simply toggle this property to show/hide your columns.

window.onload = () => {
  new Vue({
    el: '#app',
    computed: {
      visibleFields() {
        return this.fields.filter(field => field.visible)
      }
    },
    data() {
      return {
        items: [
          { id: 1, first: 'Mike', last: 'Kristensen', age: 16 },
          { id: 2, first: 'Peter', last: 'Madsen', age: 52 },
          { id: 3, first: 'Mads', last: 'Mikkelsen', age: 76 },
          { id: 4, first: 'Mikkel', last: 'Hansen', age: 34 },
        ],
        fields: [
          { key: 'id', label: 'ID', visible: true },
          { key: 'first', label: 'First Name', visible: true },
          { key: 'last', label: 'Last Name', visible: true },
          { key: 'age', label: 'Age', visible: true },
        ]
      }
    }
  })
}

<link href="https://unpkg.com/bootstrap@4.4.1/dist/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://unpkg.com/bootstrap-vue@2.2.2/dist/bootstrap-vue.css" rel="stylesheet"/>

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.10/vue.js"></script>
<script src="https://unpkg.com/bootstrap-vue@2.2.2/dist/bootstrap-vue.min.js"></script>

<div id='app'>
<b-checkbox
    :disabled="visibleFields.length == 1 && field.visible"
    v-for="field in fields" 
    :key="field.key" 
    v-model="field.visible" 
    inline
  >
  	{{ field.label }}
  </b-checkbox>
  <br /><br />
  <b-table :items="items" :fields="visibleFields" bordered>
  </b-table>
</div>

来源：https://stackoverflow.com/questions/59836782/show-hide-columns-dynamically-with-a-bootstrap-vue-component-and-bootstrap-3