javascript - Trying to send input file data over AJAX, can't access the data in my controller -


i'm using laravel 3, , ajaxing in user comment. adding images comment , can't seem file data go through. when set processdata false, unable access other data such comment , privacy. insight?

var commentforms = $('form.compose'); commentforms.on('submit', function(e){   e.preventdefault();    var file = document.getelementbyid('file_input').files[0];    $.ajax({     type: 'post',     url: '/issue/comment/' + issue_id,     processdata: false,     data: {       side: side,       comment: comment,       privacy: privacy,       file: file,     },     success: function(response){       console.log(response);       new_comment = comment_template(response);       updateside(new_comment);     }, });

going off of kevin b commented, there couple ways this.

first, reason not working that, default, cannot send files ajax request. it, , why isn't working. no matter form , ajax request, stuck. (ajax here meaning not xmlhttprequest2)

solution 1

kevin b recommended javascript formdata object part of xmlhttprequest level 2. information on how use can found: https://developer.mozilla.org/en-us/docs/web/guide/using_formdata_objects in relation code, code along lines of:

commentforms.on('submit', function(e){   e.preventdefault();    var odata = new formdata(document.forms.nameditem("composeform"));    var oreq = new xmlhttprequest();   oreq.open("post", '/issue/comment/' + issue_id, true);    //on side note, issue_id isn't declared anywhere...   oreq.onload = function(oevent) {     if (oreq.status == 200) {       console.log("uploaded!");     } else {       console.log("error " + oreq.status + " occurred uploading file.");     }   };   oreq.send(odata); });

problem

again, kevin b said, isn't supported. checking here: http://caniuse.com/xhr2 can see ie9 , below isn't supported, xp, vista, , non-upgraded windows 7. if app on own controlled network, , can ensure using firefox/chrome/ie10+, go. if going using feature public, need solution.

other solutions

many sites use ajax upload files, or trick thinking ajax. other websites 1 of 2 things: hidden iframes or flash.

the hidden iframe trick create iframe populates data of current form, , sends off would, meaning page reload. because in iframe , hidden, user never sees page reload , content uploaded expect.

the flash trick use little flash app/plugin finds file , sends server. easy use, , since flash supported, can trick on browsers. have include plugin , go.

plugins

i prefer use plugins, hard work me. 1 fond of right it's simplicity fine uploader. easy configure, looks great, can bootstrapped, or used jquery. plugins may use 1 or both methods upload files, or may try xmlhttprequest2 first, fall on 1 of other methods upload files. ultimately, of popular plugins easy configure , provide decent documentation want.

other popular plugins:

uploadify

blueimp

plupload


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