Commit | Line | Data |
---|---|---|
03470390 BA |
1 | import params from "../parameters"; //for server URL |
2 | ||
da06a6eb BA |
3 | // From JSON (encoded string values!) to "arg1=...&arg2=..." |
4 | function toQueryString(data) | |
5 | { | |
6 | let data_str = ""; | |
7 | Object.keys(data).forEach(k => { | |
b57dbd12 | 8 | data_str += k + "=" + encodeURIComponent(data[k]) + "&"; |
da06a6eb BA |
9 | }); |
10 | return data_str.slice(0, -1); //remove last "&" | |
11 | } | |
12 | ||
13 | // data, error: optional | |
625022fd | 14 | export function ajax(url, method, data, success, error) |
da06a6eb BA |
15 | { |
16 | let xhr = new XMLHttpRequest(); | |
17 | if (typeof(data) === "function") //no data | |
18 | { | |
19 | error = success; | |
20 | success = data; | |
21 | data = {}; | |
22 | } | |
23 | if (!error) | |
24 | error = errmsg => { alert(errmsg); }; | |
25 | ||
26 | xhr.onreadystatechange = function() { | |
27 | if (this.readyState == 4 && this.status == 200) | |
28 | { | |
29 | try { | |
30 | let res_json = JSON.parse(xhr.responseText); | |
31 | if (!res_json.errmsg) | |
32 | success(res_json); | |
33 | else | |
34 | error(res_json.errmsg); | |
35 | } catch (e) { | |
36 | // Plain text (e.g. for rules retrieval) | |
37 | success(xhr.responseText); | |
38 | } | |
39 | } | |
40 | }; | |
41 | ||
42 | if (["GET","DELETE"].includes(method) && !!data) | |
43 | { | |
44 | // Append query params to URL | |
45 | url += "/?" + toQueryString(data); | |
46 | } | |
03470390 | 47 | xhr.open(method, params.serverUrl + url, true); |
da06a6eb BA |
48 | xhr.setRequestHeader('X-Requested-With', "XMLHttpRequest"); |
49 | if (["POST","PUT"].includes(method)) | |
50 | { | |
51 | xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8"); | |
52 | xhr.send(JSON.stringify(data)); | |
53 | } | |
54 | else | |
55 | xhr.send(); | |
56 | } |