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Getting started

This section explains you the steps required to create a simple DataManager and demonstrate the basic usage of the DataManager in a Vue environment.

Dependencies

Below is the list of minimum dependencies required to use the DataManager.

|-- @syncfusion/ej2-data
    |-- @syncfusion/ej2-base
    |-- es6-promise (Required when window.Promise is not available)

@syncfusion/ej2-data requires the presence of a Promise feature in global environment. In the browser, window.Promise must be available.

Setup Vue Environment

You can use Vue CLI to setup your vue applications. To install Vue CLI use the following commands.

npm install -g @vue/cli
npm install -g @vue/cli-init

Create a Vue Application

Start a new Vue application using below Vue CLI command.

vue init webpack-simple quickstart

cd quickstart
npm install

Adding Syncfusion DataManager package

All the available Essential JS 2 packages are published in npmjs.com registry.

To install DataManager, use the following command

npm install @syncfusion/ej2-data --save

The —save will instruct NPM to include the DataManager package inside of the dependencies section of the package.json.

Connection to a data source

The DataManager can act as gateway for both local and remote data source which will uses the query to interact with the data source.

Binding to JSON data

DataManager can be bound to local data source by assigning the array of JavaScript objects to the json property or simply passing them to the constructor while instantiating.

Source
Preview
app.vue
<template>
  <div id="app">
    <table class='e-table'>
        <tr><th>Order ID</th><th>Customer ID</th><th>Employee ID</th></tr>
        <tr v-for="item in items">
            <td>{{item.OrderID}}</td><td>{{item.CustomerID}}</td><td>{{item.EmployeeID}}</td>
        </tr>
    </table>
  </div>
</template>

<script>
import Vue from 'vue';
import { DataManager, Query } from '@syncfusion/ej2-data';
import {data} from './datasource.js';

export default {
  data () {
    return {
        items: new DataManager(data).executeLocal(new Query().take(8))
    }
  }
}
</script>
<style>
  .e-table {
      border: solid 1px #e0e0e0;
      border-collapse: collapse;
      font-family: Roboto;
  }

  .e-table td, .e-table th {
      border-style: solid;
      border-width: 1px 0 0;
      border-color: #e0e0e0;
      display: table-cell;
      font-size: 14px;
      line-height: 20px;
      overflow: hidden;
      padding: 8px 21px;
      vertical-align: middle;
      white-space: nowrap;
      width: auto;
  }
</style>


{% endraw %}

Binding to OData

DataManager can be bound to remote data source by assigning service end point URL to the url property. Now all DataManager operations will address the provided service end point.

Source
Preview
app.vue
<template>
  <div id="app">
    <table class='e-table'>
        <tr><th>Order ID</th><th>Customer ID</th><th>Employee ID</th></tr>
        <tr v-for="item in items">
            <td>{{item.OrderID}}</td><td>{{item.CustomerID}}</td><td>{{item.EmployeeID}}</td>
        </tr>
    </table>
  </div>
</template>

<script>
import Vue from 'vue';
import { DataManager, Query } from '@syncfusion/ej2-data';

let SERVICE_URI = 'https://js.syncfusion.com/demos/ejServices/Wcf/Northwind.svc/Orders';

export default {
  data () {
    return {
        items: []
    }
  },
  created () {
      new DataManager({ url: SERVICE_URI }).executeQuery(new Query().take(8)).then((e) => {this.items = e.result})
  }
}
</script>
<style>
  .e-table {
      border: solid 1px #e0e0e0;
      border-collapse: collapse;
      font-family: Roboto;
  }

  .e-table td, .e-table th {
      border-style: solid;
      border-width: 1px 0 0;
      border-color: #e0e0e0;
      display: table-cell;
      font-size: 14px;
      line-height: 20px;
      overflow: hidden;
      padding: 8px 21px;
      vertical-align: middle;
      white-space: nowrap;
      width: auto;
  }
</style>


{% endraw %}

Filter

The data filtering is a trivial operation which will let us to get reduced view of data based on filter criteria. The filter expression can be built easily using where method of Query class.

Source
Preview
app.vue
<template>
  <div id="app">
    <table class='e-table'>
        <tr><th>Order ID</th><th>Customer ID</th><th>Employee ID</th></tr>
        <tr v-for="item in items">
            <td>{{item.OrderID}}</td><td>{{item.CustomerID}}</td><td>{{item.EmployeeID}}</td>
        </tr>
    </table>
  </div>
</template>

<script>
import Vue from 'vue';
import { DataManager, Query } from '@syncfusion/ej2-data';
import {data} from './datasource.js';

export default {
  data () {
    return {
        items: new DataManager(data).executeLocal(new Query().where('EmployeeID', 'equal', 3))
    }
  }
}
</script>
<style>
  .e-table {
      border: solid 1px #e0e0e0;
      border-collapse: collapse;
      font-family: Roboto;
  }

  .e-table td, .e-table th {
      border-style: solid;
      border-width: 1px 0 0;
      border-color: #e0e0e0;
      display: table-cell;
      font-size: 14px;
      line-height: 20px;
      overflow: hidden;
      padding: 8px 21px;
      vertical-align: middle;
      white-space: nowrap;
      width: auto;
  }
</style>


{% endraw %}

Sort

The data can be ordered either in ascending or descending using sortBy method of Query class.

Source
Preview
app.vue
<template>
  <div id="app">
    <table class='e-table'>
        <tr><th>Order ID</th><th>Customer ID</th><th>Employee ID</th></tr>
        <tr v-for="item in items">
            <td>{{item.OrderID}}</td><td>{{item.CustomerID}}</td><td>{{item.EmployeeID}}</td>
        </tr>
    </table>
  </div>
</template>

<script>
import Vue from 'vue';
import { DataManager, Query } from '@syncfusion/ej2-data';
import {data} from './datasource.js';

export default {
  data () {
    return {
        items: new DataManager(data).executeLocal(new Query().sortBy('CustomerID').take(8))
    }
  }
}
</script>
<style>
  .e-table {
      border: solid 1px #e0e0e0;
      border-collapse: collapse;
      font-family: Roboto;
  }

  .e-table td, .e-table th {
      border-style: solid;
      border-width: 1px 0 0;
      border-color: #e0e0e0;
      display: table-cell;
      font-size: 14px;
      line-height: 20px;
      overflow: hidden;
      padding: 8px 21px;
      vertical-align: middle;
      white-space: nowrap;
      width: auto;
  }
</style>


{% endraw %}

Page

The page method of the Query class is used to get range of data based on the page number and the total page size.

Source
Preview
app.vue
<template>
  <div id="app">
    <table class='e-table'>
        <tr><th>Order ID</th><th>Customer ID</th><th>Employee ID</th></tr>
        <tr v-for="item in items">
            <td>{{item.OrderID}}</td><td>{{item.CustomerID}}</td><td>{{item.EmployeeID}}</td>
        </tr>
    </table>
  </div>
</template>

<script>
import Vue from 'vue';
import { DataManager, Query } from '@syncfusion/ej2-data';
import {data} from './datasource.js';

export default {
  data () {
    return {
        items: new DataManager(data).executeLocal(new Query().page(1, 8))
    }
  }
}
</script>
<style>
  .e-table {
      border: solid 1px #e0e0e0;
      border-collapse: collapse;
      font-family: Roboto;
  }

  .e-table td, .e-table th {
      border-style: solid;
      border-width: 1px 0 0;
      border-color: #e0e0e0;
      display: table-cell;
      font-size: 14px;
      line-height: 20px;
      overflow: hidden;
      padding: 8px 21px;
      vertical-align: middle;
      white-space: nowrap;
      width: auto;
  }
</style>


{% endraw %}

Component binding

DataManager component can be used with Syncfusion components which supports data binding.

Local data binding

A DataSource can be created in-line with other Syncfusion component configuration settings.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-grid :dataSource="data" height='315px'>
          <e-columns>
            <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=90></e-column>
            <e-column field='CustomerID' headerText='Customer ID' width=120></e-column>
            <e-column field='Freight' headerText='Freight' textAlign='Right' format='C2' width=90></e-column>
            <e-column field='OrderDate' headerText='Order Date' textAlign='Right' format='yMd' type='date' width=120></e-column>
          </e-columns>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin } from "@syncfusion/ej2-vue-grids";
import { DataManager } from '@syncfusion/ej2-data';
import { data } from './datasource.js';

Vue.use(GridPlugin);

export default {
  data() {
    return {
      data: new DataManager(data)
    };
  }
}
</script>
<style>
  @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>

Remote data binding

To bind remote data to Syncfusion component, you can assign a service data as an instance of DataManager to the dataSource property.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-grid :dataSource="data">
          <e-columns>
            <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=90></e-column>
            <e-column field='CustomerID' headerText='Customer ID' width=120></e-column>
            <e-column field='Freight' headerText='Freight' textAlign='Right' format='C2' width=90></e-column>
            <e-column field='OrderDate' headerText='Order Date' textAlign='Right' format='yMd' type='date' width=120></e-column>
          </e-columns>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin } from "@syncfusion/ej2-vue-grids";
import { DataManager } from "@syncfusion/ej2-data";

Vue.use(GridPlugin);

export default {
  data() {
    let SERVICE_URI =
      "https://js.syncfusion.com/demos/ejServices/Wcf/Northwind.svc/Orders?$top=7";
    return {
      data: new DataManager({
        url: SERVICE_URI
      })
    };
  }
}
</script>
<style>
  @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>
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