How to specify constraint in Meteor Http call? - meteor

Question

I need to pass a where constraint(where UserName = "User1") in Meteor http call for Parse Rest APIs. Currently, the result that I get after the below API call includes all the entries not just those where UserName is User1.
var authUrl = "https://api.parse.com/1/classes/ImageData";
Meteor.http.call("GET", authUrl, {
headers: {
"X-Parse-Application-Id": "2CMX1b4JY5xCOPrYEbSc69ucNDDh9pl5yFeqv3A3",
"X-Parse-REST-API-Key": "9UWpw6H7UuBaOEQgT7R3ANQ3rE67yxZxcMHJJaBu",
"content-type": "application/json"
},
params: {
"UserName": "User1",
}
}, function(error, result) {
console.log(JSON.parse(result.content));
}
);
The parse documentation for such an HTTP call in curl representation is:
curl -X GET \
-H "X-Parse-Application-Id: 2CMX1b4JY5xCOPrYEbSc69ucNDDh9pl5yFeqv3A3" \
-H "X-Parse-REST-API-Key: 9UWpw6H7UuBaOEQgT7R3ANQ3rE67yxZxcMHJJaBu" \
-G \
--data-urlencode 'where={"UserName":"User1"}' \
https://api.parse.com/1/classes/ImageData
How can I correctly write this in Meteor?

Answer 1

This seems like it works:
var util = Npm.require('util');
var url = 'https://api.parse.com/1/classes/ImageData';
var result = HTTP.get(url, {
headers: {
'X-Parse-Application-Id': '2CMX1b4JY5xCOPrYEbSc69ucNDDh9pl5yFeqv3A3',
'X-Parse-REST-API-Key': '9UWpw6H7UuBaOEQgT7R3ANQ3rE67yxZxcMHJJaBu',
'content-type': 'application/json'
},
query: 'where={"UserName":"User1"}'
});
console.log(util.inspect(result.data, {depth: null}));
Notes
Meteor.http.call is deprecated. Use the HTTP API instead. Note you will need to $ meteor add http.
Because you need a string and not a key/value pair, use query instead of params. For a GET, both are placed into the query string but your original code made the query ?Username=User1 rather than ?where....