How to specify DELETE method in a link or form?

问题

Rfc2616 lists many methods besides GET and POST, like, say, DELETE, PUT etc. Method field in html forms, though, seems to be allowed to specify only GET or POST.

Is it possible to create a link or form in a html page that uses a request method that is not GET or POST?

回答1:

You certainly can’t create a link that uses anything other than GET. Since HTML began, links have been meant to be idempotent and free from side effects.

For forms and XMLHTTPRequests, Caps’ link is the place to look: Are the PUT, DELETE, HEAD, etc methods available in most web browsers?.

回答2:

Was trying to figure this out for a rails app that was using Angular on the front end; these seems to work for that environment:

<a data-confirm="Are you sure?" data-method="delete" href="/link-to-resource" rel="nofollow">Delete</a>

Edit: Just to give everyone a heads up, I think you still need to have jQuery for this to work. I removed jQuery and it stopped working; I put it back and it started working.

回答3:

By default, not there is no way to do this. Links always perform GETs, forms can use GETs or POSTs.

That said, with a little JavaScript, it's possible. Rails for instance ships with helpers which will add a data-method attribute to links. Rails-UJS is a jQuery library that will transparently intercept clicks on these links, and trigger a form submit with a _method parameter used for overriding the normal HTTP method. Finally Rack will intercept requests with a _method params, and overwrite the request method with the value in _method.

Other frameworks no doubt follow a similar pattern.

If you want even more details, I've written up an explanation of how Rails, Rails-UJS, and Rack all work together to provide this.

It's good to know how your libraries work.

回答4:

It is not possible to create a link or form with delete method.

Many web framework create a hidden input called "_method" for handling PUT and DELETE.

I created a plugin for automatically convert links to forms : RestfulizerJs

You can take a look here : https://github.com/Ifnot/RestfulizerJs

回答5:

@Ifnot plugin is great but I created a one based on $.ajax function instead of appending hidden forms! here's a simple example for a DELETE request

HTML

<button class="delete" data-target="http://example.com/post/post-id/" data-method="DELETE" data-disabled="true">Delete Article</button>

JavaScript

$(".delete").restintag(optionsObj, function(data) {
    console.log(data);
},
function(error) {
    console.log(error);
});

https://github.com/KhaledElAnsari/RESTInTag/

回答6:

just add a data-method attribute,<a data-method='put' href='whatever'>link</a>

来源：https://stackoverflow.com/questions/6926512/how-to-specify-delete-method-in-a-link-or-form

标签

html5

hyperlink

httpverbs

http-delete

rfc2616