[
    "{'id': 1, 'building': 'Edificio 4', 'zone': 'Sin zonas', 'floor': 1, 'school': 1}",
    "{'id': 2, 'building': 'Edificio 15', 'zone': 'Sin zonas', 'floor': 0, 'school': 1}",
    "{'id': 3, 'building': 'Edificio 15', 'zone': 'Sin zonas', 'floor': 1, 'school': 1}",
    "{'id': 4, 'building': 'Edificio 2', 'zone': 'C', 'floor': 2, 'school': 2}",
    "{'id': 5, 'building': 'Edificio 2', 'zone': 'B', 'floor': 3, 'school': 2}",
    "{'id': 6, 'building': 'Edificio 7', 'zone': 'J', 'floor': 7, 'school': 2}"
]

import { Component, OnInit, ViewEncapsulation } from '@angular/core';
import { Observable } from 'rxjs/Rx';
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

//this is the data class
class Place{
  constructor(public id: string, public building: string, public zone: string, public floor: string, public school: string) { }
}

@Component({
  selector: 'app-locker',
  template: `
  //here i have a template
`,
  styleUrls: ['./locker.component.css'],

})

@Injectable()
export class LockerComponent implements OnInit {

  places: Place[];
//if I manually add the data by hand here it works,
//I want to fetch the JSON data to this array

  campus: String;
  building: String;
  floor: String;
  zone: String;
  type: String;

  buildings = [];
  floors = [];
  zones = [];
  types = [];

  constructor(private http: HttpClient) {}
  ngOnInit(): void {
    this.http.get('./assets/test.json').subscribe(data => {
    this.places = data;
    });
  }
}