I'm not able in Google App Engine to download a file to the user's local Download folder. I think I've followed the instructions on how to do this. Here is the server code, in which the headers statement is supposed to make the response go to the user's Download folder. Instead, it is sent to the JavaScript function that made the GET request, the same behavior one gets with the headers statement commented out. And though I don't know what the difference is, self.response.out.write and self.response.write behave the same. In addition to get, I've also tried put, post, options, and delete, and all of them behave the same. I've run out of permutations to try.
# -*- coding: utf-8 -*-
import webapp2 as web
class ApiUser(web.RequestHandler):
def get(self, user): # fails with get, put, post, options, delete
source = 'a = 5'
self.response.headers['Content-Disposition'] = 'attachment; filename='+'test.py' # no effect
self.response.write(source) # same effect as self.response.out.write(source)
app = web.WSGIApplication([ (r'/api/user/([^/]+)', ApiUser) ], debug=True)
Here is the client code that makes the request:
$(function () {
"use strict";
function apiError(message) { console.log('ERROR', message) }
function apiGet(route, callback) {
$.ajax({
type: 'GET',
url: route,
//dataType: 'json', // SyntaxError: Unexpected token a in JSON at position 0
success: callback,
error: function (xhr, message, exc) {
apiError("API " + message + " getting " + url + ": " + exc)
}
})
}
$('#submit').click(function() {
var route = "api/user/"+'Testing'
apiGet(route, function(ret) {
console.log('callback', ret)
})
})
})
Here is the HTML file:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<a>JQuery Test Page</a><br>
<input id="submit" type="button" value="Submit"/>
<script type="text/javascript" language="javascript" src="lib/jquery/IDE/jquery.min.js"></script>
<script type="text/javascript" language="javascript" src="ide.js"></script>
</body>
</html>
Here is the yaml file:
application: helloworld
version: 1
runtime: python27
api_version: 1
threadsafe: true
handlers:
- url: /
static_files: ide/index.html
upload: ide/index.html
- url: /ide.js
static_files: ide/ide.js
upload: ide/ide.js
- url: /lib
static_dir: lib
- url: /api/.*
script: api.app
- url: /favicon\.ico
static_files: static/images/favicon.ico
upload: static/images/favicon\.ico
The directory structure is this:
app.yaml
api.py
/ide (ide.js and index.html)
/lib (contains the jquery library)
