Dart API: How to send multiple query parameters

Question

I need to collect a link of this format : fd=1&td=2&test%5Btime%5D=10. I have an array

Map<String, dynamic> jsonTest = {
      'time': '10',
    };

Map<String, dynamic> jsonMap = {
      'fd': '1',
      'td': '1',
      'test': '$jsonTest'
    };

When I try to build a query:

var request = Uri.parse("$link/api")
        .resolveUri(Uri(queryParameters: jsonMap));

I get this query: fd=1&td=1&test=%7Btime%3A+10%7D in request.query;

How do I get a query in the form I described at the beginning of my question, thank you all in advance for your answers

jamesdlin · Accepted Answer · 2020-11-23 11:34:59Z

1

To get the output you want, jsonMap will need to have a Map entry that looks like:

'test[time]': '10'

Assuming that jsonTest's keys are variable, you will need to iterate over jsonTest and add appropriate entries to jsonMap yourself. Dart's collection-for construct can do this succinctly:

Map<String, dynamic> jsonTest = {
  'time': '10',
};

Map<String, dynamic> jsonMap = {
  'fd': '1',
  'td': '1',
  for (var entry in jsonTest.entries) 'test[${entry.key}]': entry.value,
};

answered Nov 23, 2020 at 11:34

jamesdlin

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2 Comments

ike13 Over a year ago

Thank you very much, it really helped, do I understand correctly that I can add other keys to jsonTest?

jamesdlin Over a year ago

Yes, you can add other 'KEY': 'VALUE' entries to jsonTest if you want each of them to result in a query component that looks like test%5BKEY%5D=VALUE.

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