DataSource

29 Nov 20173 minutes to read

GroupButton can populate the button items based on data source and by specifying the associated fields.

Refer the below table to know about the available fields

text	Text to be displayed in button
prefixIcon	Icon class name – prefixIcon will be displayed from the left margin of the button.
suffixIcon	Icon class name – suffixIcon will be displayed from the left margin of the button.
contentType	Specifies content type of button item
imagePosition	Specifies position of the image in a button item
Selected	Specifies the selection state of button item
URL	Used to include the URL tag to the button item
htmlAttribute	It defines the HTML attributes such as class and styles for an button item.
linkAttribute	It defines the image attributes such as height, width, styles, etc.

Local Data

To set the local JSON data, define a JSON array and initialize the GroupButton with dataSource property. Specify the column names in the fields’ property.

NOTE

the columns are bounded automatically when the fields are specified with the default names like id, text, etc…

Below is the sample to code to render the GroupButton JSON dataSource,

HTML

<ej-groupbutton id="groupbutton" width="auto" [dataSource]="dataList"></ej-groupbutton>

HTML

import { Component, ViewEncapsulation } from '@angular/core';
@Component({
  selector: 'ej-app',
  templateUrl: './colorpicker.component.html',  
})
export class ColorPickerComponent { 
dataList:Array<{text:string,contentType:string}>;
constructor(){
  this.dataList= [

                { text: "Day", contentType: "textonly" },

                { text: "Week", contentType: "textonly" },

                { text: "Work Week", contentType: "textonly" },

                { text: "Month", contentType: "textonly"},

                { text: "Agenda", contentType: "textonly"}]
}
}

The above code sample will produce the following output.

Remote Data

To bind remote data to the GroupButton, you can assign a service data as an instance of ejDataManager to the dataSource property along with the fields mapping.

HTML

<ej-groupbutton id="groupbutton" width="auto" [fields]="fields" [query]="query" [dataSource]="dataManager"></ej-groupbutton>

JS

import { Component, ViewEncapsulation } from '@angular/core';
    import {NorthwindService} from './services/northwind.service';
    @Component({
    selector: 'ej-app',
    templateUrl: './colorpicker.component.html', 
    providers:[NorthwindService],
    })
    export class ColorPickerComponent { 
    public dataManager:any;
    fields: any;
    public query: any;
    value: string;
    constructor(){
            this.fields = { text: 'CustomerID'};
            this.dataManager = new ej.DataManager({
                        url: "http://mvc.syncfusion.com/Services/Northwnd.svc/", 
                        crossDomain:true
                    }); 
            this.query = new ej.Query().from("Orders").take(6);
    }
    }

The above code sample will produce the following output.