Recently, I encountered an issue and made a change to resolve it. However, I am unsure if it is the correct approach...
In my project, I have defined an interface:
export interface ContextEnvironment {
language: string;
pingUrl: string;
sessionFinishUrl: string;
timeoutUrl: string;
returnUrl: string;
baseEpvUrl: string;
}
Additionally, there is a service in place:
contextEnvironment: ContextEnvironment;
fetchInitialData(): Observable<ContextEnvironment> {
return this.http.get<ContextEnvironment>(configUrl, headerGET);
}
Within the app component, I intend to retrieve the data:
ngOnInit() {
this.initializeProperties();
}
initializeProperties(): void {
this._initialConfigService.fetchInitialData().subscribe(data => {
this._initialConfigService.initialData = data;
this._languageService.setCurrentLanguage(data.contextEnvironment.language);
});
}
Upon encountering an error message which read:
ERROR TypeError: Cannot read property 'baseEpvUrl' of undefined
I opted to initialize the variable in the service itself:
contextEnvironment: ContextEnvironment = {
language: '',
pingUrl: '',
sessionFinishUrl: '',
timeoutUrl: '',
returnUrl: '',
baseEpvUrl: ''
};
This solved the issue at hand. Are there any alternative approaches that could be considered?
Thank you for any guidance or suggestions provided!