Empty array on api get request Dart - api

Question

I could use some help. When making a GET request in Dart, I get an empty array. However, I can get a response in Postman. I'm rather stumped as to where the discrepancy is. I'm very new to Dart. I've tried more closely following the Postman code and didn't have any luck with that either.
My Dart code:
void loadData() async {
showLoading(context);
try {
hideDialog(context);
// String url = 'http://127.0.0.1:5000';
String url = '127.0.0.1:5000';
String endpoint = '/carrier_loadboard';
String option = 'Market';
String orgId = '2';
final queryParameters = {
'option': option,
'org_id': orgId,
};
final headers = {
'Authorization': 'Bearer$userToken',
'Content-Type': 'application/json',
'Cookie': 'session=$sessionCookie',
};
var creds = json.encode({
'email': 'carrier#domain.com',
'password': 'thePassword',
});
final uri = Uri.http(url, endpoint, queryParameters);
final response = await get(uri, headers: headers);
// var request = Request(
// 'GET',
// Uri.parse(
// 'http://127.0.0.1:5000/carrier_loadboard?option=Market&org_id=2'));
// request.body = creds;
// request.headers.addAll(headers);
// StreamedResponse response = await request.send();
if (response.statusCode == 200) {
// print(await response.stream.bytesToString());
print('Load data success');
List data = json.decode(response.body);
print(data);
if (data.isEmpty) {
print('No data');
}
} else {
print(response.reasonPhrase);
print('Load data failed');
}
} catch (e) {
devlog.log(e.toString());
}
}
And here is the code that Postman generates (which returns an array of data in Postman).
var headers = {
'Authorization': 'Bearer tokenTokenToken',
'Content-Type': 'application/json',
'Cookie': 'session=.cookieCodeCookieCode'
};
var request = http.Request('GET', Uri.parse('http://127.0.0.1:5000/carrier_loadboard?option='Market'&org_id='2''));
request.body = '''// {"email": "carrier#domain.com", "password":"thePassword"}\n''';
request.headers.addAll(headers);
http.StreamedResponse response = await request.send();
if (response.statusCode == 200) {
print(await response.stream.bytesToString());
}
else {
print(response.reasonPhrase);
}
This is the response in Dart:
[]
This is the first object in the Postman response:
[
{
"agent_id": null,
"assigned_carrier_id": null,
"carrier_org_id": 2,
"commodity": null,
"deliver_address": "700 4th St, San Francisco, CA 94107, USA",
"deliver_appt": null,
"deliver_appt_required": false,
"deliver_date": "2021-10-22T17:46:00",
"deliver_from_date": "2022-03-12T00:00:00",
"deliver_to_date": null,
"driver_id": null,
"expected_delivery_bid": "1000",
"expected_posting_bid": "1300",
"id": 104,
"load_num_broker": null,
"load_num_carrier": null,
"load_num_shipper": null,
"margin": null,
"notes": null,
"office_hr_end": null,
"office_hr_start": null,
"org_created": null,
"org_id_posted": 1,
"org_id_reposted": 1,
"org_name": null,
"pickup_address": "801 Alaskan Way, Seattle, WA 98104, USA",
"pickup_appt": null,
"pickup_appt_required": false,
"pickup_date": "2021-10-18T17:46:00",
"pickup_from_date": "2022-03-12T00:00:00",
"pickup_to_date": null,
"po_num": null,
"poster_id": null,
"shipper_id": null,
"status": "Completed",
"time_accepted": null,
"time_posted": "2021-10-19T00:47:24.060521",
"trailer_id": null,
"trailer_type": "Double",
"truck_id": "",
"weight": "1000"
},
]

Answer 1

you response.body is an Array . but you convert it again here:
List data = json.decode(response.body); // data is List<dynamic>
print(data); // it will return empty array
based on your postman response, response body is array, no need to json.decode if you assign the response to List data
what is decode do :
dynamic decode(String source, {Object? Function(Object?, Object?)?
reviver})
Parses the string and returns the resulting Json object.
decode require String not List. thats why based on your postman response it should throw an error if you do like this json.decode(response.body).
if you want to get the list without convert to Json Object all you have to do are remove json.decode
final data = response.body;
print (data); // if your api is success (200 ), this should not empty
// actually it same like
print(response.body);