Provide custom data source and enabling filtering to drop down list in Vue Treegrid component

16 Mar 20234 minutes to read

You can provide data source to the DropDownList by using the params of columns.edit property.

While setting new data source using edit params, you must specify a new query property for the DropDownList as follows,

    priorityParams: {
        params: {
          allowFiltering: true,
          dataSource: priorityData,
          fields: { text: "priorityName", value: "priorityName" },
          query: new Query(),
          actionComplete: () => false
        }
    };

You can also enable filtering for the DropDownList by passing the allowFiltering as true to the edit params.

In the below demo, DropDownList is rendered with custom dataSource for the Priority column and enabled filtering to search DropDownList items.

app.vue

<template>
  <div id="app">
        <ejs-treegrid :dataSource="data" :treeColumnIndex="1" height='250px' idMapping='TaskID' parentIdMapping='parentID' ref="treegrid" :editSettings="editSettings" :toolbar="toolbar">
        <e-columns>
          <e-column field="TaskID" headerText="Task ID" :isPrimaryKey='true' width="70" textAlign="Right"></e-column>
          <e-column field="TaskName" headerText="Task Name" width="100" ></e-column>
          <e-column field="StartDate" headerText="Start Date" format="yMd" editType= 'datepickeredit' width="100" textAlign="Right"></e-column>
          <e-column field="EndDate" headerText="End Date" width="100" format="yMd" editType='datepickeredit' textAlign="Right"></e-column>
          <e-column field="Priority" headerText="Priority" width="90" editType= 'dropdownedit' textAlign="Left" :edit="priorityParams"></e-column>
        </e-columns>
       </ejs-treegrid>
  </div>
</template>
<script>
import Vue from "vue";
import { TreeGridPlugin, Page, Toolbar, Edit } from "@syncfusion/ej2-vue-treegrid";
import { projectData } from "./datasource.js";
import { DropDownList } from "@syncfusion/ej2-dropdowns";
import { Query } from '@syncfusion/ej2-data';

let priorityData = [
      { priorityName: 'Normal', priorityId: '1' },
      { priorityName: 'High', priorityId: '2' },
      { priorityName: 'Low', priorityId: '3' },
      { priorityName: 'Critical', priorityId: '4' },
      { priorityName: 'Breaker', priorityId: '5' }
  ];
Vue.use(TreeGridPlugin);
export default {
  data() {
    return {
      data: projectData,
      editSettings: { allowAdding:true, allowDeleting:true, allowEditing: true, mode: 'Row' },
      toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'],
      priorityParams: {
        params: {
          allowFiltering: true,
          dataSource: priorityData,
          fields: { text: "priorityName", value: "priorityName" },
          query: new Query(),
          actionComplete: () => false
        }
      },
    };
  },
  provide: {
    treegrid: [Page, Edit, Toolbar]
  }
}
</script>