How to loop through JSON in ruby - json

Question

Below details is my shipment details. I want to loop through this JSON and get each checkpoint details.
How can I do this with Ruby
This is my controller:
#asd = AfterShip::V4::Tracking.get('ups', '1Z31Y1Y90490064644')
this is my view page where i get json data
= #asd.to_json`
This is the JSON:
{
"meta": {
"code": 200
},
"data": {
"tracking": {
"id": "560b87b38c9079f272e98dfc",
"created_at": "2015-09-30T06:56:51+00:00",
"updated_at": "2015-09-30T06:56:55+00:00",
"last_updated_at": "2015-09-30T06:56:55+00:00",
"tracking_number": "1Z31Y1Y90490064644",
"slug": "ups",
"active": false,
"android": [
],
"custom_fields": null,
"customer_name": null,
"delivery_time": 7,
"destination_country_iso3": "GBR",
"emails": [
"pu#l.com"
],
"expected_delivery": null,
"ios": [
],
"note": null,
"order_id": null,
"order_id_path": null,
"origin_country_iso3": "HKG",
"shipment_package_count": 1,
"shipment_pickup_date": "2015-08-24T16:00:00",
"shipment_delivery_date": "2015-09-01T14:22:00",
"shipment_type": "UPS SAVER",
"shipment_weight": 0.5,
"shipment_weight_unit": "kg",
"signed_by": "MANTON (RESIDENTIAL)",
"smses": [
],
"source": "api",
"tag": "Delivered",
"title": "1Z31Y1Y90490064644",
"tracked_count": 1,
"unique_token": "bkGcaTOJDe",
"checkpoints": [
{
"slug": "ups",
"city": null,
"created_at": "2015-09-30T06:56:55+00:00",
"location": "HK",
"country_name": "HK",
"message": "BILLING INFORMATION RECEIVED",
"country_iso3": "HKG",
"tag": "InfoReceived",
"checkpoint_time": "2015-08-25T23:05:47",
"coordinates": [
],
"state": null,
"zip": null
},
{
"slug": "ups",
"city": null,
"created_at": "2015-09-30T06:56:55+00:00",
"location": null,
"country_name": null,
"message": "YOUR PACKAGE WAS RELEASED BY THE CLEARING AGENCY.",
"country_iso3": null,
"tag": "InTransit",
"checkpoint_time": "2015-08-27T16:57:00",
"coordinates": [
],
"state": null,
"zip": null
},
{
"slug": "ups",
"city": null,
"created_at": "2015-09-30T06:56:55+00:00",
"location": null,
"country_name": null,
"message": "YOUR PACKAGE WAS RELEASED BY THE CLEARING AGENCY.",
"country_iso3": null,
"tag": "InTransit",
"checkpoint_time": "2015-08-27T17:07:00",
"coordinates": [
],
"state": null,
"zip": null
}
}
}
}

Answer 1

What you are getting here is an instance of Hash class (the response JSON is already parsed).
tracking = AfterShip::V4::Tracking.get('ups', '1Z31Y1Y90490064644')
tracking['data']['tracking']['id']
# => "560b87b38c9079f272e98dfc"