maxFileSize and acceptFileTypes in blueimp file upload plugin do not work. Why?

Question

I\'m using Blueimp jQuery file upload plugin for upload files.

I had no problem in uploading but the option maxFileSize and acceptFileTypes

Answer 1

Checked/Valid example for:

• multiple file inputs
• for one or MULTIPLE FILES upload - $.grep() to remove files from array with errors
• image and audio format
• dynamic file types from string by new RegExp()

Notice: acceptFileTypes.test() - check mime types, for adio file like .mp3 it will be audio/mpeg - not only extenstion. For all blueimp options: https://github.com/blueimp/jQuery-File-Upload/wiki/Options

$('input[type="file"]').each(function(i){

    // .form_files is my div/section of form for input file and progressbar
    var $progressbar = $(this).parents('.form_files:first').find('.progress-bar:first');

    var $image_format = 'jpg|jpeg|jpe|png|gif';
    var $audio_format = 'mp3|mpeg';
    var $all_formats = $image_format + '|' + $audio_format;

    var $image_size = 2;
    var $audio_size = 10;
    var mb = 1048576;

    $(this).fileupload({
        // ...
        singleFileUploads: false,   // << send all together, not single
        // ...
        add: function (e, data) {

            // array with all indexes of files with errors
            var error_uploads_indexes = [];

            // when add file - each file
            $.each(data.files, function(index, file) {

                // array for all errors
                var uploadErrors = [];


                // validate all formats first
                if($all_formats){

                    // check all formats first - before size
                    var acceptFileTypes = "(\.|\/)(" + $all_formats + ")$";
                    acceptFileTypes = new RegExp(acceptFileTypes, "i");

                    // when wrong format
                    if(data.files[index]['type'].length && !acceptFileTypes.test(data.files[index]['type'])) {
                        uploadErrors.push('Not an accepted file type');

                    }else{

                        // default size is image_size
                        var $my_size = $image_size;

                            // check audio format
                            var acceptFileTypes = "(\.|\/)(" + $audio_format + ")$";
                            acceptFileTypes = new RegExp(acceptFileTypes, "i");

                            // alert(data.files[index]['type']);
                            // alert(acceptFileTypes.test('audio/mpeg'));

                            // if is audio then size is audio_size
                            if(data.files[index]['type'].length && acceptFileTypes.test(data.files[index]['type'])) {
                                $my_size = $audio_size;
                            }

                        // check size
                        if(data.files[index]['size'] > $my_size * mb) {
                            uploadErrors.push('Filesize is too big');
                        };
                    };

                }; // << all_formats

                // when errors
                if(uploadErrors.length > 0) {
                    //  alert(uploadErrors.join("\n"));

                    // mark index of error file
                    error_uploads_indexes.push(index);
                    // alert error
                    alert(uploadErrors.join("\n"));

                };

            }); // << each


            // remove indexes (files) with error
            data.files = $.grep( data.files, function( n, i ) {
                return $.inArray(i, error_uploads_indexes) ==-1;
            });


            // if are files to upload
            if(data.files.length){
                // upload by ajax
                var jqXHR = data.submit().done(function (result, textStatus, jqXHR) {
                        //...
                     alert('done!') ;
                        // ...
                });
            } // 

        }, // << add
        progressall: function (e, data) {
            var progress = parseInt(data.loaded / data.total * 100, 10);
            $progressbar.css(
                'width',
                progress + '%'
                );
        }
    }); // << file_upload

    //          
}); // << each input file