Use dynamic AJAX URL for Vue Select2 wrapper component

问题

I modified the Wrapper Component Example from the VueJS documentation to include the AJAX datasource option. Here is my code.

However, I would like to set the ajax url property of my select2 component dynamically preferably like this,

<select2 :options="options" v-model="selected" url="dynamic-url-here">
  <option disabled value="0">Select one</option>
</select2>

How would I do this?

回答1:

1. Add the property to the Component's props:

   Vue.component('select2', {
       props: ['options', 'value', 'url'],
   

2. Move the AJAX options either to a variable with scope outside the select2 component or a data element of that component:

   Vue.component('select2', {
       props: ['options', 'value', 'url'],
       template: '#select2-template',
       data: function() {
         return {
             ajaxOptions: {
                 url: this.url,
                 dataType: 'json',
                 delay: 250,
                 tags: true,
                 data: function(params) {
                     return {
                         term: params.term, // search term
                         page: params.page
                     };
                 },
                 processResults: function(data, params) {
                     params.page = params.page || 1;
                     return {
                         results: data,
                         pagination: {
                             more: (params.page * 30) < data.total_count
                         }
                     };
                 },
                 cache: true
             }
         };
     },
   

3. use that variable when initializing the select2:

   mounted: function() {
       var vm = this
       $(this.$el)
          .select2({
              placeholder: "Click to see options",
              ajax: this.ajaxOptions
          })
   

4. Add a watcher for url:

   watch: {
       url: function(value) {
           this.ajaxOptions.url = this.url;
           $(this.$el).select2({ ajax: this.ajaxOptions});
      }
   

5. Set the property:

   <select2 :options="options" v-model="selected" :url="url">
   

   where url is defined in the data object of the app.

See a demonstration in this plunker example.

来源：https://stackoverflow.com/questions/46425172/use-dynamic-ajax-url-for-vue-select2-wrapper-component