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[WIP] File upload support with FormData object #499

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[WIP] File upload support with FormData object #499

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aafbf25
File upload support with FormData object
tortuetorche Aug 23, 2017
32361f1
Fix JS coding style
tortuetorche Aug 23, 2017
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29 changes: 26 additions & 3 deletions src/rails.js
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Original file line number Diff line number Diff line change
Expand Up @@ -106,7 +106,7 @@

// Submits "remote" forms and links with ajax
handleRemote: function(element) {
var method, url, data, withCredentials, dataType, options;
var method, url, data, withCredentials, dataType, options, contentType, processData;

if (rails.fire(element, 'ajax:before')) {
withCredentials = element.data('with-credentials') || null;
Expand All @@ -115,7 +115,13 @@
if (element.is('form')) {
method = element.data('ujs:submit-button-formmethod') || element.attr('method');
url = element.data('ujs:submit-button-formaction') || element.attr('action');
data = $(element[0]).serializeArray();
if (typeof window.FormData !== 'undefined' && element.find(rails.fileInputSelector).length) {
data = new FormData(element[0]);
contentType = false;
processData = false;
} else {
data = $(element[0]).serializeArray();
}
// memoized value from clicked submit button
var button = element.data('ujs:submit-button');
if (button) {
Expand All @@ -124,6 +130,15 @@
}
element.data('ujs:submit-button-formmethod', null);
element.data('ujs:submit-button-formaction', null);
} else if (typeof window.FormData !== 'undefined' && element.is(rails.fileInputSelector)) {
method = element.data('method') || 'get';
url = element.data('url');
var formData = new FormData();
formData.append(element.attr('name'), element[0].files[0]);
formData.append(rails.csrfParam(), $('input[name="' + rails.csrfParam() + '"]').val());
data = formData;
contentType = false;
processData = false;
} else if (element.is(rails.inputChangeSelector)) {
method = element.data('method');
url = element.data('url');
Expand Down Expand Up @@ -165,6 +180,13 @@
crossDomain: rails.isCrossDomain(url)
};

if (contentType !== null) {
options.contentType = contentType;
}
if (processData !== null) {
options.processData = processData;
}

// There is no withCredentials for IE6-8 when
// "Enable native XMLHTTP support" is disabled
if (withCredentials) {
Expand Down Expand Up @@ -496,8 +518,9 @@
}

if (remote) {
// Disable this feature for modern web browsers
nonBlankFileInputs = rails.nonBlankInputs(form, rails.fileInputSelector);
if (nonBlankFileInputs) {
if (typeof window.FormData === 'undefined' && nonBlankFileInputs) {
// Slight timeout so that the submit button gets properly serialized
// (make it easy for event handler to serialize form without disabled values)
setTimeout(function(){ rails.disableFormElements(form); }, 13);
Expand Down