Created
March 7, 2023 14:57
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Angular class decorator to track the page visit
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/** | |
* Angular class decorator to track the page visit | |
* | |
*/ | |
import { Injector } from '@angular/core'; | |
import { AnalyticService } from '../analytics.service'; | |
export function PageAnalytics(pageName: string) { | |
return function (constructor: Function) { | |
// Note: AnalyticService is used to illustrate the injection of dependency in decorator responsible for tracking | |
let injector = Injector.create({ | |
providers: [{ provide: AnalyticService, useClass: AnalyticService }], | |
}); | |
const analyticsService = injector.get(AnalyticService); | |
const originalNgOnInit = constructor.prototype.ngOnInit; | |
constructor.prototype.ngOnInit = function () { | |
analyticsService.track(pageName); | |
originalNgOnInit && originalNgOnInit.apply(this); | |
}; | |
}; | |
} | |
/** | |
* How to use it? | |
* | |
* @PageAnalytics('customerPage') | |
* export class CustomersComponent implements OnInit { | |
* ........ | |
* } | |
* | |
*/ |
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