How to get gps1(lat,lng) values for group of locationId ?

Question

How to get gps1 for every locations as following : locationArr=[40871, 60009, 38149, 40868, 43240, 15299, 53897, 40976, 38151, 23183, 38152, 78579, 23180, 40977, 23176, 39565, 40884, 15298, 38147, 40966, 39669] every number represent locationId I need to pass 21 LocationId to get 21 GPS1 latitude and longtude . I can get it one for one locationId getLocationData(id: number) { console.log( "server " +id) return this .http.get( 'http://192.168.7.45:9200/location/_doc/' +id); } this .partDetailsService.getLocationData( this .LocationId).subscribe(res => { this .dataLocation = res[ '_source' ][ 'GPS1' ]; var loc = this .dataLocation.split( ',' ); this .lat = loc[0].trim(); this .lng = loc[1].trim(); But cannot get locationId for 21 location id so that i need to put code above on for to array of locationId How to make loop to get values of GPS1 latitude and longtude to every LocationId from array above meaning i will get GPS1 21 Time . every locationId have GPS1 How to do that please i need to replace array of locationId in place of this.locationId

ahmed elbarbary · Answer

thank you for reply this is not fixed location every part different from each other based of number of locations may be part 1 have 2 location part2 have 5 part7 have 20 location can you write more details what you mean by let location1 = this .http.get( 'http://192.168.7.45:9200/location/_doc/40871' ); let location2 = this .http.get( 'http://192.168.7.45:9200/location/_doc/6009' ); i dont have fixed locations also how to loop to locations and add at end to every url

Veerendra Annigere · Answer

You need to build the arr of request to pass for forkjoin from your location id arr. I'm not sure this might work for you. try this and let me know. import { Observable, forkJoin } from 'rxjs' ; let location1 = this .http.get( 'http://192.168.7.45:9200/location/_doc/40871' ); let location2 = this .http.get( 'http://192.168.7.45:9200/location/_doc/6009' ); forkJoin([location1, location2]).subscribe(results => { // results[0] is location1 res // results[1] is location2 res });

ahmed elbarbary · Answer

can you help me how to implement it using fork join im beginner using angular if possible please

Veerendra Annigere · Answer

It's not correct to call API in the loop. It's difficult to handle the response of each request. You have to use fork join.