Modify data in Vue Drop down list component
16 Mar 20232 minutes to read
When binding the remote data source, by using the actionComplete
event, you can modify the result data before passing it to DropDownList.
The following sample demonstrate how to modify the result data.
<template>
<div id="app">
<div id='container' style="margin:50px auto 0; width:250px;">
<br>
<ejs-dropdownlist id='dropdownlist' placeholder='Select a customer' :actionComplete='actionComplete' :dataSource='dataSource' :query='query' :fields='fields'></ejs-dropdownlist>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { DropDownListPlugin } from "@syncfusion/ej2-vue-dropdowns";
Vue.use(DropDownListPlugin);
import { DataManager,Query,ODataV4Adaptor } from "@syncfusion/ej2-data";
export default {
data (){
return {
query : new Query().from('Customers').select(['ContactName', 'CustomerID']).take(6),
dataSource : new DataManager({
url: 'https://services.odata.org/V4/Northwind/Northwind.svc/',
adaptor: new ODataV4Adaptor,
crossDomain: true
}),
fields: { text: 'ContactName', value: 'CustomerID' }
}
},
methods: {
actionComplete: function (e) {
// initially result contains 6 items
console.log("Before modified the result: " + e.result.length);
// remove first 2 items from result.
e.result.splice(0, 2);
// now displays the result count is 4.
console.log("After modified the result: " + e.result.length);
}
}
}
</script>
<style>
@import "../../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../../node_modules/@syncfusion/ej2-inputs/styles/material.css";
@import "../../node_modules/@syncfusion/ej2-vue-dropdowns/styles/material.css";
</style>