Utilizing the `filterBy` function with a custom select list that changes dynamically

Question

Utilizing the `filterBy` function with a custom select list that changes dynamically

I'm currently in the process of constructing a form with an extensive selection of drop-down items utilizing vue.js. My approach involves implementing the dynamic select list as detailed in this documentation:

However, I am interested in providing users with the ability to quickly filter through this list by incorporating the filterBy directive. I am uncertain if it is feasible to merge these two functionalities - can a dynamic list be filtered using filterBy? Is filterBy solely compatible with a v-for?

javascript vue.js multi-select

Answer 1

Answer №1

Version 0.12 introduces the usage of filters with the options param. The documentation showcases a syntax that resembles filtering in v-for.

Below is an example demonstrating the use of filterBy (utilizing version 0.12.16):

var app = new Vue({
  el: '#app',
  
  data: {
    selected: '',
    options: [
      { text: '1', value: 1, show: true },
      { text: '2', value: 2, show: false },
      { text: '3', value: 3, show: true },
      { text: '4', value: 4, show: true },
      { text: '5', value: 5, show: false },
    ]
  }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/0.12.16/vue.js"></script>
<div id="app">
  Filter by 'show' <br>
  <select v-model="selected" options="options | filterBy true in 'show'"></select>
</div>

Please note that the use of options param for <select v-model> has been deprecated in version 1.0. In version 1.0, you can directly employ v-for within <select>. Additionally, v-for supports nesting for optgroups.

Answer 2

Version 0.12 introduces the usage of filters with the options param. The documentation showcases a syntax that resembles filtering in v-for.

Below is an example demonstrating the use of filterBy (utilizing version 0.12.16):

var app = new Vue({
  el: '#app',
  
  data: {
    selected: '',
    options: [
      { text: '1', value: 1, show: true },
      { text: '2', value: 2, show: false },
      { text: '3', value: 3, show: true },
      { text: '4', value: 4, show: true },
      { text: '5', value: 5, show: false },
    ]
  }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/0.12.16/vue.js"></script>
<div id="app">
  Filter by 'show' <br>
  <select v-model="selected" options="options | filterBy true in 'show'"></select>
</div>

Please note that the use of options param for <select v-model> has been deprecated in version 1.0. In version 1.0, you can directly employ v-for within <select>. Additionally, v-for supports nesting for optgroups.

Answer 3

Answer №2

Take a look at this demo https://jsfiddle.net/tronsfey/4zz6zrxv/5/.

<div id="app">
   <input type="text" v-model="keyword">
   <select name="test" id="test">
     <optgroup v-for="group in list | myfilter keyword" label="{{group.label}}">
       <option value="{{item.price}}" v-for="item in group.data">{{item.text}}</option>
     </optgroup>
   </select>
</div>




 <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/1.0.26/vue.js"></script>
    new Vue({
        el: '#app',
        data: function () {
            return {
                    keyword : '',
                list: [
                  {
                    label:'A',
                    data:[
                       {price: 3, text: 'aa'},
                       {price: 2, text: 'bb'}
                    ]
                  },
                    {
                    label:'B',
                    data:[
                       {price: 5, text: 'cc'},
                       {price: 6, text: 'dd'}
                    ]
                  }
                ]
            }
        },
        filters : {
            myfilter : function(value,keyword){
            return (!keyword || keyword === 'aaa') ? value : '';
          }

        }
    })

You can utilize the v-for directive to generate optgroups and then apply filterBy or a custom filter instead (as shown in the demo) to refine your options data.

I hope this information is beneficial for you.

Answer 4

Take a look at this demo https://jsfiddle.net/tronsfey/4zz6zrxv/5/.

<div id="app">
   <input type="text" v-model="keyword">
   <select name="test" id="test">
     <optgroup v-for="group in list | myfilter keyword" label="{{group.label}}">
       <option value="{{item.price}}" v-for="item in group.data">{{item.text}}</option>
     </optgroup>
   </select>
</div>




 <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/1.0.26/vue.js"></script>
    new Vue({
        el: '#app',
        data: function () {
            return {
                    keyword : '',
                list: [
                  {
                    label:'A',
                    data:[
                       {price: 3, text: 'aa'},
                       {price: 2, text: 'bb'}
                    ]
                  },
                    {
                    label:'B',
                    data:[
                       {price: 5, text: 'cc'},
                       {price: 6, text: 'dd'}
                    ]
                  }
                ]
            }
        },
        filters : {
            myfilter : function(value,keyword){
            return (!keyword || keyword === 'aaa') ? value : '';
          }

        }
    })

You can utilize the v-for directive to generate optgroups and then apply filterBy or a custom filter instead (as shown in the demo) to refine your options data.

I hope this information is beneficial for you.

Utilizing the `filterBy` function with a custom select list that changes dynamically

Answer №1

Answer №2

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