Double Booking Prevention
Sometimes it is necessary to guarantee that events don't overlap - eg. when scheduling workorders, interacting with a work calendar. You can reject the updates or additions and let the user know about it.
The event overlap can be turned on/off on an event basis or globally on the instance.
- On an event basis - by setting the
overlapproperty tofalsethe specified event cannot overlap. - Globally on the instance - by setting
eventOverlapoption tofalseoverlap is disbled globally.
If set to false, the event settings have precedence over the global calendar eventOverlap option.
Give feedback to the user - optionally, a toast can be displayed to explain why an event cannot be dropped, moved or created. For this we can use the onEventCreateFailed and onEventUpdateFailed lifecycle events.
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Demo
Control the interaction globally (all events)
Events cannot overlap
eventOverlap=falsehtml<mbsc-eventcalendar
[view]="{ calendar: { type: 'month' }}"
[data]="myData"
[dragToMove]="true"
[dragToResize]="true"
[eventOverlap]="true "
[exclusiveEndDates]="true"
[clickToCreate]="true"
[dragToCreate]="true"
>
</mbsc-eventcalendar>
ts// relevant events
const myData = [{
start: '2026-10-23T00:00',
end: '2026-10-25T00:00',
title: 'Event 2 (no event overlap)',
overlap: false
}, {
start: '2026-10-28T00:00',
end: '2026-10-30T00:00',
title: 'Event 4 (no event overlap)',
overlap: false
}];
ComponentTemplate
import { CommonModule } from '@angular/common';
import { Component } from '@angular/core';
import {
MbscCalendarEvent,
MbscEventcalendarOptions,
MbscEventcalendarView,
MbscModule,
Notifications,
setOptions ,
} from '@mobiscroll/angular';
setOptions({
locale: ,
theme: ' ',
themeVariant: ' '
});
const now = new Date();
const y = now.getFullYear();
const m = now.getMonth();
const d = now.getDate();
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
providers: [Notifications],
standalone: true,
imports: [CommonModule, MbscModule],
})
export class AppComponent {
constructor(private notify: Notifications) {}
myOptions: MbscEventcalendarOptions = {
clickToCreate: true,
dragToCreate: true,
dragToMove: true,
dragToResize: true,
eventOverlap: false,
exclusiveEndDates: true,
onEventUpdateFailed: () => {
this.notify.toast({
message: 'Make sure not to double book',
});
},
onEventCreateFailed: () => {
this.notify.toast({
message: 'Make sure not to double book',
});
},
};
myEvents: MbscCalendarEvent[] = [
{
start: new Date(y, m, d - 3),
end: new Date(y, m, d - 1),
title: 'Event 1',
},
{
start: new Date(y, m, d),
end: new Date(y, m, d + 2),
title: 'Event 2 (no event overlap)',
overlap: false,
},
{
start: new Date(y, m, d + 3),
end: new Date(y, m, d + 5),
title: 'Event 3',
},
{
start: new Date(y, m, d + 5),
end: new Date(y, m, d + 7),
title: 'Event 4 (no event overlap)',
overlap: false,
},
];
myView: MbscEventcalendarView = {
calendar: { type: 'month', labels: 'all' },
};
}