angular upload, need to send file size in content disposition - angularjs

Background:
I have an AngularJS front end uploading files to an ASP.NET backend. I have a custom MultipartStreamProvider that is persisting the data to Azure. The only problem I have now is that the existing angular code is not submitting the file size, only the filename in the content disposition header
MyMultipartFormDataStreamProvider : MultipartStreamProvider
{
// ...
public override Stream GetStream(HttpContent parent, HttpContentHeaders headers)
{
// For form data, Content-Disposition header is a requirement
ContentDispositionHeaderValue contentDisposition = headers.ContentDisposition;
if (contentDisposition != null)
{
// create default filename if its missing
contentDisposition.FileName = (String.IsNullOrEmpty(contentDisposition.FileName) ? $"{Guid.NewGuid()}.data" : contentDisposition.FileName);
var size = contentDisposition.Size; // This is null right now!
}
}
}
and here is the angular code
$scope.$watch('files', function (files) {
$scope.formUpload = false;
console.log(files);
if (files != null) {
for (var i = 0; i < files.length; i++) {
$scope.errorMsg = null;
(function (file) {
file.size = 25;
upload(file);
})(files[i]);
}
}
});
function upload(file) {
file.upload = Upload.upload({
url: window.location.origin + "/api/mydocs/uploadfile?clientFolder=" + $scope.attachmentFolder + "&clientId=" + $scope.clientId + "&userId=" + $scope.currentUser.UserId,
method: 'POST',
headers: {},
fields: {},
file: file
});
Question:
How can I make Angular include the file size in the Content Disposition Header?
Thanks!

I have used this file upload directive in the past with great success. It will return the file size on the client side once your file is processed by the directive.
ngFileUpload

Related

How to use foreach for ajax array in Laravel?

I have an ajax function where I post multiple files in an array. How can store these files? I tried the following code in controller but only the first file is being stored.
foreach ($request->photos as $imagefile) {
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$imagefile->move($imagePath,$imageName);
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also this is how my array looks like
array from ajax
as #innovin requested.
Blade File
<input name="files[]" type="file" class="form-control" accept="image/png, image/jpeg" multiple id="files">
Update
function otherUpload(){
var outputdata = [];
var fileSelect = document.getElementById('files');
var files = fileSelect.files;
var formData = new FormData();
// Loop through each of the selected files.
for (var i = 0; i < files.length; i++) {
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// Check the file type.
if (!file.type.match('image.*')) {
continue;
}
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contentType: false,
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you should loop through $request->file('photos') instead of $request->photos
if($request->hasfile('photos'))
{
foreach($request->file('photos') as $photo)
{
$name = $photo->getClientOriginalName();
$file->move(public_path('folder-path'), $name);
// to store file in Storage folder:
//$file->storeAs('files', $name);
}
}
note that he function GetClientOriginalName() is used to retrieve the file's original name at the time of upload in laravel, and that'll only be possible if the data is sent as array and not as a string. Hence, you must add enctype="multipart/form-data" whenever you are creating a form with input fields for files or images.

how to export data into CSV and PDF files using angularjs

I want to, when i click on button (separate for both CSV and PDF), it automatically download in CSV and PDF file with correct Formatting.
this CSV code i want to add PDF inside code
$scope.downloadData = function() {
var datasets = $scope.datasets.reverse();
var file_name = $scope.m_id+ '.csv';
var dataUrl = 'data:text/csv;charset=utf-8,';
var json = [];
if(datasets !== null) {
for(idx = 0; idx < datasets.length; idx++) {
var dataset = datasets[idx].data;
var time = datasets[idx].timestamp;
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var fields = Object.keys(json[0]);
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link.click();
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location.replace(uri);
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}
};
I try some of script i found on internet, but it is not working, some have formatting issue and save have downloading.
In Advance Thanks.
You should use this awesome library for pdf/csv or whatever else formats.. File Saver
Here's is code example, service created using FileSaver
function download(api, file, contentType) {
var d = $q.defer();
$http({
method: 'GET',
url: api,
responseType: 'arraybuffer',
headers: {
'Content-type': contentType
}
}).success(function(response) {
var data = new Blob([response], {
type: contentType+ ';charset=utf-8'
});
FileSaver.saveAs(data, file);
d.resolve(response);
}).error(function(response) {
d.reject(response);
});
return d.promise;
}
file input is name of file, you can use same service and pass the types and file names direct from controller.
Let;s you service name is homeService
for pdf call
homeservice.download('/api/download/whaever', 'export.pdf', 'application/pdf')

How to fix 413 HTTP Request entity too large

I have a project where I have a simple client written in angularjs and the server is in scala, in my client I have a simple upload button where you click on it and choose a local file(csv), and when I upload a certain csv that is a bit big, like 6000 rows I get
413 Request entity too large
my js code for the upload is:
$scope.upload = function(files) {
if (!files || !files.length) {
} else {
for (var i = 0; i < files.length; i++) {
var file = files[i];
Upload.upload({
url: '/uploadFile',
file: file
}).
}).success(function (data, status, headers, config) {
}).error(function (data, status, headers, config) {
$scope.showServerError(status, data);
})
}
}
};
in the server is :
def uploadFile = Action(parse.multipartFormData) { implicit request =>
request.body.file("file").fold {
BadRequest("Missing file")
} { uploadedFile => {
val localFile = new File("/tmp/" + uploadedFile.ref.file.getName)
Files.copy(uploadedFile.ref.file.toPath, localFile.toPath, StandardCopyOption.REPLACE_EXISTING)
localFile.deleteOnExit()
val j = Json.parse( ${Crypto.encryptAES(localFile.getAbsolutePath)}})
Ok(j)
}}
}
what needs to be change in order to support bigger files?
You can use the maxLength body parser to specify the maximum size of the body in bytes:
// Allow up to 15MB files...
private val uploadParser = parse.maxLength(15*1024*1024, parse.multipartFormData)
def uploadFile = Action(uploadParser) { implicit request =>
...
}
The default is 10MB for multipart form data, which you can also override by changing the play.http.parser.maxDiskBuffer setting. See the docs.

Angular ng-file-upload Get Byte Array and FormData in Asp.net MVC

I am trying to use ng-file-upload to upload files using Angular. I need the byte array to store in our database (I cannot store the uploaded file on the server), but I also need the FormData as well. My problem is that I can only seem to get one or the other (either the byte array or the formdata) but not both.
Here is my Angular code:
$scope.uploadPic = function (file) {
$scope.emrDetailID = 7;
file.upload = Upload.upload({
url: '/SSQV4/SSQV5/api/Document/UploadEMRDocument',
method: 'POST',
data: { file: file, 'emrdetail': $scope.emrDetailID}
});
file.upload.then(function (response) {
$timeout(function () {
file.result = response.data;
$scope.imageID = file.result;
});
});
};
Using the code below, I can get the byte array and store it in my database:
public async Task<IHttpActionResult> UploadDocument()
{
var provider = new MultipartMemoryStreamProvider();
await Request.Content.ReadAsMultipartAsync(provider);
var f = provider.Contents.First(); // assumes that the file is the only data
if (f != null)
{
string ClientIP = IPNetworking.GetIP4Address();
var filename = f.Headers.ContentDisposition.FileName.Trim('\"');
filename = Path.GetFileName(filename);
var extension = Path.GetExtension(filename).TrimStart('.');
var buffer = await f.ReadAsByteArrayAsync();
FileImageParameterModel pm = new FileImageParameterModel();
pm.binFileImage = buffer;
//pm.CompanyID = UserInfo.intMajorID;
pm.CompanyID = 10707;
pm.dteDocumentDate = Convert.ToDateTime("4/4/2016");
pm.dteExpiration = Convert.ToDateTime("4/4/2017");
pm.vchUserIP = ClientIP;
pm.vchUploadedbyUserName = UserInfo.Username;
pm.vchFileExtension = extension;
CommonClient = new CommonWebApiClient();
CommonClient.AuthorizationToken = UserInfo.AccessToken;
int imageID = await CommonClient.InsertNewFileImage(pm);
return Json(imageID);
}
else
{
return BadRequest("Attachment failed to upload");
}
}
Using the code below I can get the FormData
var provider = new MultipartFormDataStreamProvider(workingFolder);
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var emr = provider.FormData["emrdetail"];
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There's got to be a way to get both. I have been searching the internet for 2 days and all I can find are the two solutions above neither of which solves my issue.
Any assistance is greatly appreciated!
You are thinking way to complicated. Here is some of my code which I used for file upload in AngularJS with .NET
Angular:
function uploadFileToUrl(file) {
var formData = new FormData(); // Notice the FormData!!!
formData.append('uploadedFile', file);
return $http({
url: uploadUrl,
method: 'POST',
data: formData,
headers: {
'Content-Type': undefined
}
}).then(resolve, reject);
function resolve(data) {
$log.debug('data : ', data);
return data;
}
function reject(e) {
$log.warn('error in uploadFileToUrl : ', e);
return $q.reject(e);
}
}
Server:
public Task HandleAsync([NotNull] UploadFilesCommand command)
{
return wrapper.InvokeOnChannel(async client =>
{
// init command
command.Output = new Dictionary<string, int>();
try
{
foreach (var file in command.Files)
{
var request = new UploadFileRequest
{
FileName = file.Name,
FileStream = file.Stream
};
UploadFileResponse response = await client.UploadFileAsync(request);
command.Output.Add(file.Name, response.Id);
}
}
finally
{
// dispose streams
foreach (var file in command.Files)
{
if (file.Stream != null)
{
file.Stream.Dispose();
}
}
}
});
}

How do you upload an image file to mongoose database using mean js

I am new to the mean stack. I want to know how to upload an image file to the database(mongoose) through angularjs. If possible, please provide me with some code. I have searched the internet but I haven't found any suitable code.
You have plenty ways and tools to achieve what you want. I put one of them here:
For this one I use angular-file-upload as client side. So you need this one in your controller:
$scope.onFileSelect = function(image) {
if (angular.isArray(image)) {
image = image[0];
}
// This is how I handle file types in client side
if (image.type !== 'image/png' && image.type !== 'image/jpeg') {
alert('Only PNG and JPEG are accepted.');
return;
}
$scope.uploadInProgress = true;
$scope.uploadProgress = 0;
$scope.upload = $upload.upload({
url: '/upload/image',
method: 'POST',
file: image
}).progress(function(event) {
$scope.uploadProgress = Math.floor(event.loaded / event.total);
$scope.$apply();
}).success(function(data, status, headers, config) {
$scope.uploadInProgress = false;
// If you need uploaded file immediately
$scope.uploadedImage = JSON.parse(data);
}).error(function(err) {
$scope.uploadInProgress = false;
console.log('Error uploading file: ' + err.message || err);
});
};
And following code in your view (I also added file type handler for modern browsers):
Upload image <input type="file" data-ng-file-select="onFileSelect($files)" accept="image/png, image/jpeg">
<span data-ng-if="uploadInProgress">Upload progress: {{ uploadProgress }}</span>
<img data-ng-src="uploadedImage" data-ng-if="uploadedImage">
For server side, I used node-multiparty.
And this is what you need in your server side route:
app.route('/upload/image')
.post(upload.postImage);
And in server side controller:
var uuid = require('node-uuid'),
multiparty = require('multiparty'),
fs = require('fs');
exports.postImage = function(req, res) {
var form = new multiparty.Form();
form.parse(req, function(err, fields, files) {
var file = files.file[0];
var contentType = file.headers['content-type'];
var tmpPath = file.path;
var extIndex = tmpPath.lastIndexOf('.');
var extension = (extIndex < 0) ? '' : tmpPath.substr(extIndex);
// uuid is for generating unique filenames.
var fileName = uuid.v4() + extension;
var destPath = 'path/to/where/you/want/to/store/your/files/' + fileName;
// Server side file type checker.
if (contentType !== 'image/png' && contentType !== 'image/jpeg') {
fs.unlink(tmpPath);
return res.status(400).send('Unsupported file type.');
}
fs.rename(tmpPath, destPath, function(err) {
if (err) {
return res.status(400).send('Image is not saved:');
}
return res.json(destPath);
});
});
};
As you can see, I store uploaded files in file system, so I just used node-uuid to give them unique name. If you want to store your files directly in database, you don't need uuid, and in that case, just use Buffer data type.
Also please take care of things like adding angularFileUpload to your angular module dependencies.
I got ENOENT and EXDEV errors. After solving these, below code worked for me.
var uuid = require('node-uuid'),
multiparty = require('multiparty'),
fs = require('fs');
var form = new multiparty.Form();
form.parse(req, function(err, fields, files) {
var file = files.file[0];
var contentType = file.headers['content-type'];
var tmpPath = file.path;
var extIndex = tmpPath.lastIndexOf('.');
var extension = (extIndex < 0) ? '' : tmpPath.substr(extIndex);
// uuid is for generating unique filenames.
var fileName = uuid.v4() + extension;
var destPath = appRoot +'/../public/images/profile_images/' + fileName;
// Server side file type checker.
if (contentType !== 'image/png' && contentType !== 'image/jpeg') {
fs.unlink(tmpPath);
return res.status(400).send('Unsupported file type.');
}
var is = fs.createReadStream(tmpPath);
var os = fs.createWriteStream(destPath);
if(is.pipe(os)) {
fs.unlink(tmpPath, function (err) { //To unlink the file from temp path after copy
if (err) {
console.log(err);
}
});
return res.json(destPath);
}else
return res.json('File not uploaded');
});
for variable 'appRoot' do below in express.js
path = require('path');
global.appRoot = path.resolve(__dirname);

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