#289 enhancement
Pablo Bustos

Allow PUT, DELETE and other HTTP methods on ajax requests

Reported by Pablo Bustos | August 18th, 2008 @ 10:58 PM

"request" function of Ajax.Request class, simulate other verbs (e.g. DELETE, PUT, HEAD, etc) over post.

Why restrict to only get and post requests?

To enable prototype use servlets of my project (that requires DELETE and PUT methods), as a patch, I replaced in that function this line:

      this.transport.open(this.method.toUpperCase(), this.url,

by this:

      this.transport.open(this.options.method.toUpperCase(), this.url,

and works perfectly.

Comments and changes to this ticket

  • John-David Dalton

    John-David Dalton August 18th, 2008 @ 11:43 PM

    • State changed from “new” to “invalid”
  • Pablo Bustos

    Pablo Bustos August 19th, 2008 @ 04:50 AM

    I could not find the answer in that reference, why restrict to only GET and POST?

    Do you know if the _method param corresponds to a w3c standard?

    How can I manage a _method param from a java servlet? Servlets cannot process post and get params concurrently...

  • John-David Dalton

    John-David Dalton August 19th, 2008 @ 04:53 AM

    • State changed from “invalid” to “new”
    • Assigned user set to “Tobie Langel”
  • Tobie Langel

    Tobie Langel August 21st, 2008 @ 12:46 AM

    DELETE and PUT request are not implemented in all supported browsers.

  • Tobie Langel

    Tobie Langel August 21st, 2008 @ 12:46 AM

    • State changed from “new” to “enhancement”
    • Tag set to ajax, needs_docs, needs_patch, needs_tests
  • Pablo Bustos

    Pablo Bustos August 21st, 2008 @ 03:34 AM

    I'd like to access a REST WS using ajax, and, as a rest service, all resources are accessed with a generic interface (e.g., HTTP GET, POST, PUT, DELETE).

  • Tobie Langel

    Tobie Langel August 22nd, 2008 @ 02:14 AM

    Sure, only, as I mentioned, using DELETE and PUT isn't possible in some of the supported browsers, hence the current work-around.

    Determining which current browsers support what warrants tests, so those would be welcomed.

  • Mark Caudill

    Mark Caudill August 24th, 2008 @ 08:39 PM

    Here is a good starting point for this: http://annevankesteren.nl/2007/1...

    Firefox “supports” the methods from RFC 2616 and RFC 2518, except for TRACE. That method throws an exception for security reasons. All the supported HTTP methods are case-insensitively matched against and uppercased prior to the request.

    Opera has an issue with OPTIONS: the request never finishes loading. (In earlier versions of Opera it is converted to GET.) For known methods it performs a case-insensitive match just like Firefox. The known methods are GET, HEAD, POST, PUT, and DELETE. HEAD and PUT never have a response entity body. All other methods, including custom, result in GET requests.

    IE has probably the weirdest implementation. It performs a case-insensitive match against a list of supported methods, just like the other browsers. However, only for GET, POST, and PUT is the input actually uppercased before the request. So get results in GET, but head results in head. In this way, it supports RFC 2616 and RFC 2518 with TRACE and CONNECT as exceptions. If you use HEAD (uppercase) there will not be any response body. Methods not supported by IE will cause an exception to be raised. (This could be different for prior versions of IE.)

  • David Burger

    David Burger September 5th, 2008 @ 05:01 AM

    On line 83 of ajax.js which currently looks like this:

    if (!['get', 'post'].include(this.method)) {

    Why not allow 'head' requests? I understand the problem with 'put' and 'delete' may be that most browsers don't support them. Surely most browsers support head.

  • Mark Caudill

    Mark Caudill September 5th, 2008 @ 05:55 AM

    David: Opera doesn't interpret HEAD correctly at all. IE does have problems, but I'm not sure how much that would affect the actual response by the server (with a lowercase 'head' request).

  • John-David Dalton
  • Damien Carol

    Damien Carol January 6th, 2009 @ 09:09 AM

    Microsoft documentation about RESTful Web Services details this tricks : Using the custom header "X-HTTP-Method-Override" in this way :

    POST /bookmarkservice/skonnard/bookmarks/123 HTTP/1.1
    X-HTTP-Method-Override: DELETE

    But for your problem you can do like me.

       /** By damien to disable PUT/DELETE over POST */
        /*if (!['get', 'post'].include(this.method)) {
          // simulate other verbs over post
          params['_method'] = this.method;
          this.method = 'post';

    I use prototype.js to consume RESTful Web Services. I put in comment from line 1193 to 1198. With this solution this work perfect with Firefox 3.0 but you need to do tests with other browser.

  • Tobie Langel

    Tobie Langel July 24th, 2009 @ 01:54 AM

    • Tag changed from ajax, needs_docs, needs_patch, needs_tests to needs_docs, needs_patch, needs_tests, section:ajax

    [not-tagged:"ajax" tagged:"section:ajax" bulk edit command]

  • Tobie Langel

    Tobie Langel July 24th, 2009 @ 02:25 AM

    • Tag changed from needs_docs, needs_patch, needs_tests, section:ajax to missing:documentation, needs_patch, needs_tests, section:ajax

    [not-tagged:"needs_docs" tagged:"missing:documentation" bulk edit command]

  • Tobie Langel

    Tobie Langel July 24th, 2009 @ 02:26 AM

    • Tag changed from missing:documentation, needs_patch, needs_tests, section:ajax to missing:documentation, missing:tests, needs_patch, section:ajax

    [not-tagged:"needs_tests" tagged:"missing:tests" bulk edit command]

  • Tobie Langel

    Tobie Langel July 24th, 2009 @ 02:28 AM

    • Tag changed from missing:documentation, missing:tests, needs_patch, section:ajax to missing:documentation, missing:patch, missing:tests, section:ajax

    [not-tagged:"needs_patch" tagged:"missing:patch" bulk edit command]

  • Tobie Langel

    Tobie Langel July 24th, 2009 @ 03:36 AM

    • Tag changed from missing:documentation, missing:patch, missing:tests, section:ajax to missing:documentation, missing:patch, needs:tests, section:ajax

    [not-tagged:"missing:tests" tagged:"needs:tests" bulk edit command]

  • Tobie Langel

    Tobie Langel July 24th, 2009 @ 03:37 AM

    • Tag changed from missing:documentation, missing:patch, needs:tests, section:ajax to missing:documentation, needs:patch, needs:tests, section:ajax

    [not-tagged:"missing:patch" tagged:"needs:patch" bulk edit command]

  • Tobie Langel

    Tobie Langel July 24th, 2009 @ 03:38 AM

    • Tag changed from missing:documentation, needs:patch, needs:tests, section:ajax to needs:doc, needs:patch, needs:tests, section:ajax

    [not-tagged:"missing:documentation" tagged:"needs:doc" bulk edit command]

  • T.J. Crowder

    T.J. Crowder November 16th, 2009 @ 04:50 PM

    • Assigned user cleared.

    [responsible:none bulk edit command]

  • XC31Kimberley

    XC31Kimberley February 4th, 2010 @ 10:04 AM

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  • Peter

    Peter February 10th, 2010 @ 01:08 AM

    Some browsers don't support certain (valid) HTTP 1.1 methods.
    Some REST-based web services require certain (valid) HTTP 1.1 methods (and won't truck any of this 'special _method param' nonsense)

    Something will break one way or the other. Please impelement the following so at least the option of which way to go is in the developers hands, not prototypes.

    diff -Naur prototype.js.orig prototype.js
    --- prototype.js.orig 2010-02-10 13:03:00.000000000 +1300 +++ prototype.js 2010-02-10 13:02:18.000000000 +1300 @@ -1390,11 +1390,6 @@

     this.method = this.options.method;
     var params = Object.clone(this.options.parameters);
    • if (!['get', 'post'].include(this.method)) {
    • params['_method'] = this.method;
    • this.method = 'post';

    - }

     this.parameters = params;
     if (params = Object.toQueryString(params)) {

    @@ -1417,7 +1412,7 @@

       this.transport.onreadystatechange = this.onStateChange.bind(this);
    • this.body = this.method == 'post' ? (this.options.postBody || params) : null;
    • this.body = this.method == 'post' ? (this.options.postBody || params) : this.options.postBody; this.transport.send(this.body);

      / Force Firefox to handle ready state 4 for synchronous requests / @@ -1443,7 +1438,7 @@ 'Accept': 'text/javascript, text/html, application/xml, text/xml, /' };

    • if (this.method == 'post') {

    • if (['post', 'put'].include(this.method)) { headers['Content-type'] = this.options.contentType +
       (this.options.encoding ? '; charset=' + this.options.encoding : '');
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