How to get the response headers in dojo/store/JsonRest?

Question

I’m using dojo/store/JsonRest to fetch for some data. But I also need the response headers. How can I access them?

this.transport = new JsonRest({
  target: "my/target"
});

this.transport.query({}).then(function(resp) {
  debugger; // <- I want to get the response headers here!
})

I tried accessing it by using the this keyword within the function at debugger time. But that is just the window object.

Is that even possible?

You are getting the window object in `this` because there is no context of the `.then` function. If you want to get the `this.transport` as `this` in the `.then` function then use `lang.hitch` -> `this.transport.query({}).then(lang.hitch(this.transport, function(resp) { //here this is this.transport} );` On another note, to get the response headers, you would have to either dig in the code of JsonRest or send the XHR using the `dojo.xhr` module. — Himanshu, Jul 19 '18 at 03:43

score 1 · Accepted Answer · answered Jul 26 '18 at 22:10

dojo/store/JsonRest by itself do not provide a way to get the headers, but here is an example of how you can get all or individual headers.

var transport = new JsonRest({
  target: "my/target"
});

var result = transport.query({});

result.then(function(resp) {
  var localXHR = result.ioArgs.xhr;

  // get all headers, return an String
  console.log(localXHR.getAllResponseHeaders());

  // get one header
  console.log(localXHR.getResponseHeader('content-type'));

  // do something with the response
  console.log(resp);
});

Hope it helps

How to get the response headers in dojo/store/JsonRest?

1 Answers1