Data binding in Angular Schedule component
11 Jul 202424 minutes to read
The Scheduler uses DataManager
, which supports both RESTful data service binding and JavaScript object array binding. The dataSource
property of Scheduler can be assigned either with the instance of DataManager
or JavaScript object array collection, as it supports the following two kind of data binding methods:
- Local data
- Remote data
Binding local data
To bind local JSON data to the Scheduler, you can simply assign a JavaScript object array to the dataSource
option of the scheduler within the eventSettings
property. The JSON object dataSource can also be provided as an instance of DataManager
and assigned to the Scheduler dataSource
property.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ScheduleModule } from '@syncfusion/ej2-angular-schedule'
import { ButtonModule } from '@syncfusion/ej2-angular-buttons'
import { Component } from '@angular/core';
import { EventSettingsModel, DayService, WeekService, WorkWeekService, MonthService, AgendaService } from '@syncfusion/ej2-angular-schedule';
@Component({
imports: [
ScheduleModule,
ButtonModule
],
standalone: true,
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService],
// specifies the template string for the Schedule component
template: `<ejs-schedule width='100%' height='550px' [selectedDate]='selectedDate' [eventSettings]='eventSettings'></ejs-schedule>`
})
export class AppComponent {
public selectedDate: Date = new Date(2018, 1, 15);
public eventSettings: EventSettingsModel = {
dataSource: [
{
Id: 1,
Subject: 'Explosion of Betelgeuse Star',
StartTime: new Date(2018, 1, 15, 9, 30),
EndTime: new Date(2018, 1, 15, 11, 0)
}, {
Id: 2,
Subject: 'Thule Air Crash Report',
StartTime: new Date(2018, 1, 12, 12, 0),
EndTime: new Date(2018, 1, 12, 14, 0)
}, {
Id: 3,
Subject: 'Blue Moon Eclipse',
StartTime: new Date(2018, 1, 13, 9, 30),
EndTime: new Date(2018, 1, 13, 11, 0)
}, {
Id: 4,
Subject: 'Meteor Showers in 2018',
StartTime: new Date(2018, 1, 14, 13, 0),
EndTime: new Date(2018, 1, 14, 14, 30)
}]
};
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
By default,
DataManager
usesJsonAdaptor
for binding local data.
You can also bind different field names to the default event fields as well as include additional
custom fields
to the event object collection which can be referred here.
Binding remote data
Any kind of remote data services can be bound to the Scheduler. To do so, create an instance of DataManager
and provide the service URL to the url
option of DataManager
and then assign it to the dataSource
property within eventSettings
.
Using ODataV4Adaptor
ODataV4 is a standardized protocol for creating and consuming data. Refer to the following code example to retrieve the data from ODataV4 service using the DataManager. To connect with ODataV4 service end points, it is necessary to make use of ODataV4Adaptor
within DataManager
.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ScheduleModule } from '@syncfusion/ej2-angular-schedule'
import { ButtonModule } from '@syncfusion/ej2-angular-buttons'
import { Component } from '@angular/core';
import { EventSettingsModel, DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService } from '@syncfusion/ej2-angular-schedule';
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
@Component({
imports: [
ScheduleModule,
ButtonModule
],
standalone: true,
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService,MonthAgendaService ],
// specifies the template string for the Schedule component
template: `<ejs-schedule width='100%' height='550px' [readonly]="readonly" [selectedDate]="selectedDate" [eventSettings]="eventSettings"></ejs-schedule>`
})
export class AppComponent {
public readonly: boolean = true;
public selectedDate: Date = new Date(2020, 9, 20);
private dataManager: DataManager = new DataManager({
url: 'https://services.syncfusion.com/angular/production/api/Schedule',
adaptor: new ODataV4Adaptor,
crossDomain: true
});
public eventSettings: EventSettingsModel = { dataSource: this.dataManager };
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Filter events using the in-built query
To enable server-side filtering operations based on predetermined conditions, the includeFiltersInQuery
API can be set to true, this allows the filter query to be constructed using the start date, end date, and recurrence rule which in turn enables the request to be filtered accordingly.
This method greatly improves the component’s performance by reducing the data that needs to be transferred to the client side. As a result, the component’s efficiency and responsiveness are significantly enhanced, resulting in a better user experience. However, it is important to consider the possibility of longer query strings, which may cause issues with the maximum URL length or server limitations on query string length.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ScheduleModule } from '@syncfusion/ej2-angular-schedule'
import { ButtonModule } from '@syncfusion/ej2-angular-buttons'
import { Component } from '@angular/core';
import { EventSettingsModel, DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService } from '@syncfusion/ej2-angular-schedule';
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
@Component({
imports: [
ScheduleModule,
ButtonModule
],
standalone: true,
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService],
// specifies the template string for the Schedule component
template: `<ejs-schedule width='100%' height='550px' [readonly]="readonly" [selectedDate]="selectedDate" [eventSettings]="eventSettings"></ejs-schedule>`
})
export class AppComponent {
public readonly: boolean = true;
public selectedDate: Date = new Date(1996, 6, 9);
private dataManager: DataManager = new DataManager({
url: 'https://services.odata.org/V4/Northwind/Northwind.svc/Orders/',
adaptor: new ODataV4Adaptor,
crossDomain: true
});
public eventSettings: EventSettingsModel = {
includeFiltersInQuery: true, dataSource: this.dataManager, fields: {
id: 'Id',
subject: { name: 'ShipName' },
location: { name: 'ShipCountry' },
description: { name: 'ShipAddress' },
startTime: { name: 'OrderDate' },
endTime: { name: 'RequiredDate' },
recurrenceRule: { name: 'ShipRegion' }
}
};
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
The following image represents how the parameters are passed using ODataV4 filter.
Using custom adaptor
It is possible to create your own custom adaptor by extending the built-in available adaptors. The following example demonstrates the custom adaptor usage and how to add a custom field EventID
for the appointments by overriding the built-in response processing using the processResponse
method of the ODataV4Adaptor
.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ScheduleModule } from '@syncfusion/ej2-angular-schedule'
import { ButtonModule } from '@syncfusion/ej2-angular-buttons'
import { Component } from '@angular/core';
import { EventSettingsModel, DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService } from '@syncfusion/ej2-angular-schedule';
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
class CustomAdaptor extends ODataV4Adaptor {
override processResponse(): Object {
let i: number = 0;
// calling base class processResponse function
let original: any = super.processResponse.apply(this, arguments as any);
// adding employee id
original.forEach((item: any) => item['EventID'] = ++i);
return original;
}
}
@Component({
imports: [
ScheduleModule,
ButtonModule
],
standalone: true,
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService],
// specifies the template string for the Schedule component
template: `<ejs-schedule width='100%' height='550px' [readonly]="readonly" [selectedDate]="selectedDate" [eventSettings]="eventSettings"></ejs-schedule>`
})
export class AppComponent {
public readonly: boolean = true;
public selectedDate: Date = new Date(1996, 6, 9);
private dataManager: DataManager = new DataManager({
url: 'https://services.odata.org/V4/Northwind/Northwind.svc/Orders/',
adaptor: new CustomAdaptor
});
public eventSettings: EventSettingsModel = {
dataSource: this.dataManager, fields: {
id: 'Id',
subject: { name: 'ShipName' },
location: { name: 'ShipCountry' },
description: { name: 'ShipAddress' },
startTime: { name: 'OrderDate' },
endTime: { name: 'RequiredDate' },
recurrenceRule: { name: 'ShipRegion' }
}
};
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Loading data via AJAX post
You can bind the event data through external ajax request and assign it to the [dataSource
]dataSource
property of Scheduler. In the following code example, we have retrieved the data from server with the help of ajax request and assigned the resultant data to the dataSource
property of Scheduler within the onSuccess
event of Ajax.
[src/app/app.ts]
import { Component, OnInit, ViewChild } from "@angular/core";
import { Ajax } from "@syncfusion/ej2-base";
import { DataManager, UrlAdaptor, Query } from "@syncfusion/ej2-data";
import { EventSettingsModel, View, EventRenderedArgs, DayService, WeekService, WorkWeekService, MonthService AgendaService, ResizeService, DragAndDropService, ScheduleComponent } from "@syncfusion/ej2-angular-schedule";
@Component({
selector: "app-root",
templateUrl: "app/app.component.html",
providers: [ DayService, WeekService, WorkWeekService, MonthService, AgendaService, ResizeService,
DragAndDropService ]
})
export class AppComponent implements OnInit {
@ViewChild("scheduleObj") public scheduleObj: ScheduleComponent;
ngOnInit(): void {}
public currentDate: Date = new Date(2017, 5, 5);
onCreate() {
const scheduleObj = this.scheduleObj; // Schedule instance
const ajax = new Ajax(
"https://services.syncfusion.com/angular/production/api/Schedule",
"GET"
);
ajax.send();
ajax.onSuccess = (data: string) => {
scheduleObj.eventSettings.dataSource = JSON.parse(data);
};
}
}
Definition for the controller method
GetData
can be referred here.
Passing additional parameters to the server
To send an additional custom parameter to the server-side post, you need to make use of the addParams
method of Query
. Now, assign this Query
object with additional parameters to the query
property of Scheduler.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ScheduleModule } from '@syncfusion/ej2-angular-schedule'
import { ButtonModule } from '@syncfusion/ej2-angular-buttons'
import { Component } from '@angular/core';
import { EventSettingsModel, DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService } from '@syncfusion/ej2-angular-schedule';
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
@Component({
imports: [
ScheduleModule,
ButtonModule
],
standalone: true,
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService],
// specifies the template string for the Schedule component
template: `<ejs-schedule width='100%' height='550px' [readonly]="readonly" [selectedDate]="selectedDate" [eventSettings]="eventSettings"></ejs-schedule>`
})
export class AppComponent {
public readonly: boolean = true;
public selectedDate: Date = new Date(2017, 5, 11);
private dataManager: DataManager = new DataManager({
url: 'https://js.syncfusion.com/demos/ejservices/api/Schedule/LoadData',
adaptor: new ODataV4Adaptor
});
private dataQuery: Query = new Query().from("Events").addParams('readOnly', 'true');
public eventSettings: EventSettingsModel = { dataSource: this.dataManager, query: this.dataQuery };
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
The parameters added using the
query
property will be sent along with the data request sent to the server on every scheduler actions.
Handling failure actions
During the time of Scheduler interacting with server, there are chances that some server-side exceptions may occur. You can acquire those error messages or exception details in client-side using the actionFailure
event of Scheduler.
The argument passed to the actionFailure
event contains the error details returned from the server.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ScheduleModule } from '@syncfusion/ej2-angular-schedule'
import { ButtonModule } from '@syncfusion/ej2-angular-buttons'
import { Component, ViewChild } from '@angular/core';
import { EventSettingsModel, DayService, WeekService, WorkWeekService, MonthService, AgendaService, ScheduleComponent, MonthAgendaService } from '@syncfusion/ej2-angular-schedule';
import { DataManager } from '@syncfusion/ej2-data';
@Component({
imports: [
ScheduleModule,
ButtonModule
],
standalone: true,
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService],
// specifies the template string for the Schedule component
template: `<span style="color: #FF0000"></span><ejs-schedule #scheduleObj width='100%' height='530px' [readonly]="readonly" [selectedDate]="selectedDate" [eventSettings]="eventSettings" (actionFailure)="onActionFailure($event)"></ejs-schedule>`
})
export class AppComponent {
@ViewChild('scheduleObj')
public scheduleObj?: ScheduleComponent;
public selectedDate: Date = new Date(2017, 5, 11);
public err: string = '';
private dataManager: DataManager = new DataManager({
url: 'http://some.com/invalidUrl'
});
public eventSettings: EventSettingsModel = { dataSource: this.dataManager };
readonly: any;
onActionFailure(eventData: any): void {
this.err = 'Server exception: 404 Not found';
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
The
actionFailure
event will be triggered not only on server returning errors, but also when there is an exception while processing any of the Scheduler CRUD actions.
Scheduler CRUD actions
The CRUD (Create, Read, Update and Delete) actions can be performed easily on Scheduler appointments using the various adaptors available within the DataManager
. Most preferably, we will be using UrlAdaptor
for performing CRUD actions on scheduler appointments.
import { Component } from '@angular/core';
import { EventSettingsModel, DayService, WeekService, WorkWeekService, MonthService, AgendaService } from '@syncfusion/ej2-angular-schedule';
import { DataManager, UrlAdaptor } from '@syncfusion/ej2-data';
@Component({
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService],
// specifies the template string for the Schedule component
template: `<ejs-schedule width='100%' height='550px' [readonly]="readonly" [selectedDate]="selectedDate" [eventSettings]="eventSettings"></ejs-schedule>`
})
export class AppComponent {
public selectedDate: Date = new Date(2017, 5, 11);
private dataManager: DataManager = new DataManager({
url: 'Home/GetData', // 'controller/actions'
crudUrl: 'Home/UpdateData',
adaptor: new UrlAdaptor
});
public eventSettings: EventSettingsModel = { dataSource: this.dataManager };
}
The server-side controller code to handle the CRUD operations are as follows.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ScheduleSample.Models;
namespace ScheduleSample.Controllers
{
public class HomeController : Controller
{
ScheduleDataDataContext db = new ScheduleDataDataContext();
public ActionResult Index()
{
return View();
}
public JsonResult LoadData() // Here we get the Start and End Date and based on that can filter the data and return to Scheduler
{
var data = db.ScheduleEventDatas.ToList();
return Json(data, JsonRequestBehavior.AllowGet);
}
[HttpPost]
public JsonResult UpdateData(EditParams param)
{
if (param.action == "insert" || (param.action == "batch" && param.added != null)) // this block of code will execute while inserting the appointments
{
var value = (param.action == "insert") ? param.value : param.added[0];
int intMax = db.ScheduleEventDatas.ToList().Count > 0 ? db.ScheduleEventDatas.ToList().Max(p => p.Id) : 1;
DateTime startTime = Convert.ToDateTime(value.StartTime);
DateTime endTime = Convert.ToDateTime(value.EndTime);
ScheduleEventData appointment = new ScheduleEventData()
{
Id = intMax + 1,
StartTime = startTime.ToLocalTime(),
EndTime = endTime.ToLocalTime(),
Subject = value.Subject,
IsAllDay = value.IsAllDay,
StartTimezone = value.StartTimezone,
EndTimezone = value.EndTimezone,
RecurrenceRule = value.RecurrenceRule,
RecurrenceID = value.RecurrenceID,
RecurrenceException = value.RecurrenceException
};
db.ScheduleEventDatas.InsertOnSubmit(appointment);
db.SubmitChanges();
}
if (param.action == "update" || (param.action == "batch" && param.changed != null)) // this block of code will execute while updating the appointment
{
var value = (param.action == "update") ? param.value : param.changed[0];
var filterData = db.ScheduleEventDatas.Where(c => c.Id == Convert.ToInt32(value.Id));
if (filterData.Count() > 0)
{
DateTime startTime = Convert.ToDateTime(value.StartTime);
DateTime endTime = Convert.ToDateTime(value.EndTime);
ScheduleEventData appointment = db.ScheduleEventDatas.Single(A => A.Id == Convert.ToInt32(value.Id));
appointment.StartTime = startTime.ToLocalTime();
appointment.EndTime = endTime.ToLocalTime();
appointment.StartTimezone = value.StartTimezone;
appointment.EndTimezone = value.EndTimezone;
appointment.Subject = value.Subject;
appointment.IsAllDay = value.IsAllDay;
appointment.RecurrenceRule = value.RecurrenceRule;
appointment.RecurrenceID = value.RecurrenceID;
appointment.RecurrenceException = value.RecurrenceException;
}
db.SubmitChanges();
}
if (param.action == "remove" || (param.action == "batch" && param.deleted != null)) // this block of code will execute while removing the appointment
{
if (param.action == "remove")
{
int key = Convert.ToInt32(param.key);
ScheduleEventData appointment = db.ScheduleEventDatas.Where(c => c.Id == key).FirstOrDefault();
if (appointment != null) db.ScheduleEventDatas.DeleteOnSubmit(appointment);
}
else
{
foreach (var apps in param.deleted)
{
ScheduleEventData appointment = db.ScheduleEventDatas.Where(c => c.Id == apps.Id).FirstOrDefault();
if (appointment != null) db.ScheduleEventDatas.DeleteOnSubmit(appointment);
}
}
db.SubmitChanges();
}
var data = db.ScheduleEventDatas.ToList();
return Json(data, JsonRequestBehavior.AllowGet);
}
public class EditParams
{
public string key { get; set; }
public string action { get; set; }
public List<ScheduleEventData> added { get; set; }
public List<ScheduleEventData> changed { get; set; }
public List<ScheduleEventData> deleted { get; set; }
public ScheduleEventData value { get; set; }
}
}
}
Configuring Scheduler with Google API service
We have assigned our custom created Google Calendar url to the DataManager and assigned the same to the Scheduler dataSource
. Since the events data retrieved from the Google Calendar will be in its own object format, therefore it needs to be resolved manually within the Scheduler’s dataBinding
event. Within this event, the event fields needs to be mapped properly and then assigned to the result.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ScheduleModule } from '@syncfusion/ej2-angular-schedule'
import { ButtonModule } from '@syncfusion/ej2-angular-buttons'
import { Component } from '@angular/core';
import { EventSettingsModel, View, DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService }
from '@syncfusion/ej2-angular-schedule';
import { DataManager, WebApiAdaptor } from '@syncfusion/ej2-data';
@Component({
imports: [
ScheduleModule,
ButtonModule
],
standalone: true,
selector: 'app-root',
providers: [DayService, WeekService, WorkWeekService, MonthService, AgendaService, MonthAgendaService],
// specifies the template string for the Schedule component
template: `<ejs-schedule #scheduleObj width='100%' height='550px' [selectedDate]="selectedDate" [eventSettings]="eventSettings" (dataBinding)="onDataBinding($event)" [readonly]="readonly"></ejs-schedule>`
})
export class AppComponent {
public selectedDate: Date = new Date(2018, 10, 14);
public readonly: boolean = true;
private calendarId: string = '5105trob9dasha31vuqek6qgp0@group.calendar.google.com';
private publicKey: string = 'AIzaSyD76zjMDsL_jkenM5AAnNsORypS1Icuqxg';
private dataManger: DataManager = new DataManager({
url: 'https://www.googleapis.com/calendar/v3/calendars/' + this.calendarId + '/events?key=' + this.publicKey,
adaptor: new WebApiAdaptor,
crossDomain: true
});
public eventSettings: EventSettingsModel = { dataSource: this.dataManger };
onDataBinding(e: { [key: string]: Object }): void {
let items: { [key: string]: Object }[] = (e['result'] as { [key: string]: Object; })['items'] as { [key: string]: Object }[];
let scheduleData: Object[] = [];
if (items.length > 0) {
for (let i: number = 0; i < items.length; i++) {
let event: { [key: string]: Object } = items[i];
let when: string = (event['start'] as { [key: string]: Object; })['dateTime'] as string;
let start: string = (event['start'] as { [key: string]: Object; })['dateTime'] as string;
let end: string = (event['end'] as { [key: string]: Object; })['dateTime'] as string;
if (!when) {
when = (event['start'] as { [key: string]: Object; })['date'] as string;
start = (event['start'] as { [key: string]: Object; })['date'] as string;
end = (event['end'] as { [key: string]: Object; })['date'] as string;
}
scheduleData.push({
Id: event['id'],
Subject: event['summary'],
StartTime: new Date(start),
EndTime: new Date(end),
IsAllDay: !(event['start'] as { [key: string]: Object; })['dateTime']
});
}
}
e['result'] = scheduleData;
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
You can refer to our Angular Scheduler feature tour page for its groundbreaking feature representations. You can also explore our Angular Scheduler example to knows how to present and manipulate data.