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Posted to dev@wicket.apache.org by andruhon <gi...@git.apache.org> on 2018/01/11 01:29:07 UTC

[GitHub] wicket pull request #255: Allow multipart submission of non modified FormDat...

GitHub user andruhon opened a pull request:

    https://github.com/apache/wicket/pull/255

    Allow multipart submission of non modified FormData with Wicket.Ajax

    Wicket is currently does fancy processing of the data and it's not possible to avoid it. This commit allows to submit non processed data, which should not be processed.
    
    This change, for example, will make possible to collect files from the drag and drop event and submit these files as FormData.
    
    A drop down handler example:
    ```JavaScript
            dropArea.addEventListener("drop", dropHandler);
            function dropHandler(ev) {            
                ev.preventDefault();
                Wicket.Log.info("DragAndDropFileUpload drop " + dropAreaId);
                var dt = ev.dataTransfer;
                var formData = new FormData();
                var files = [];
                var i;
                if (dt.items) {
                    // DataTransferItemList
                    for (i = 0; i < dt.items.length; i++) {
                        if (dt.items[i].kind == "file") {
                            var f = dt.items[i].getAsFile();
                            Wicket.Log.info("... file[" + i + "].name = " + f.name);
                            files.push(f);
                        }
                    }
                } else {
                    // DataTransfer
                    for (i = 0; i < dt.files.length; i++) {
                        Wicket.Log.info("... file[" + i + "].name = " + dt.files[i].name);
                        files.push(dt.files[i]);
                    }
                }
    
                if (files.length > 0) {
                    // formData.append(attrs['f']+"_hf_0","");
                    files.forEach(function (f) {
                        formData.append(fileUpload.getAttribute("name"), f)
                    });
    
                    // Wicket.Ajax.ajax will simply submit a multipart form into the iframe, which we don't want
                    // var xhr = new XMLHttpRequest();
                    // xhr.open('POST', attrs['u'] + "&wicket-ajax=true&wicket-ajax-baseurl=" + Wicket.Form.encode(Wicket.Ajax.baseUrl || '.'), true);
                    // xhr.send(formData);
                    // xhr.addEventListener("load", function() {console.log(arguments)})
                    Wicket.Ajax.ajax({
                        u: attrs.u,
                        m: 'POST',
                        mp: true,
                        npd: formData
                    });
    
                } else {
                    Wicket.Log.error("No files to upload " + dropAreaId);
                }
            }
    ```

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/andruhon/wicket master

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/wicket/pull/255.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #255
    
----
commit be12e65d58619cb20ccc6750fe4655de4516d642
Author: Andrew Kondratev <an...@...>
Date:   2018-01-11T01:18:34Z

    Allow multipart submission of non modified FormData with Wicket.Ajax

----


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