I tried to use MvcRazorToPdf, i can able to generate mail merge letters. My aim is after downloading file i want to return json message from controller. how to do?
Controller: [how to convert the below lines to generate pdf and download without return]
return new PdfActionResult(pdfres, (writer, document) =>
{
document.SetPageSize(new Rectangle(PageSize.A4));
document.NewPage();
})
{
FileDownloadName = "ElanWasHere.pdf"
};
I appreciate your help. thanks
Related
I'm trying to save some data from API in a .json file using cy.writeFile method, but my code is replacing the existing data.
What I need is to add additional data.
cy.intercept('POST', 'http://viasphere.localhost/sites/datatable').as('response')
cy.contains('Sortir').click()
cy.wait('#response').get('#response').then(xhr => {
console.log(xhr)
let siteID = xhr.response.body.data[0].id
let creationDate = xhr.response.body.data[0].created_at
let RM = xhr.response.body.data[0].metal_rollout
let clientGroup = xhr.response.body.data[0].client_contact_group
cy.writeFile('SiteAPIdata.json', {siteID2: siteID})
After the run, the data existing inside the SiteAPIdata.json file is being replaced by the new data.
The SiteAPIdata.json file is located in cypress/fixtures/ folder.
Thank you!
Assuming you want to append the new data to the existing data, that can easily be accomplished by using cy.readFile() before writing.
...
cy.readFile('SiteAPIdata.json').then((data) => {
data.siteID = siteID;
cy.writeFile('SiteAPIdata.json', data);
})
I've seen there is exemples with reactor-netty on how to post files using multipart form (https://github.com/reactor/reactor-netty/blob/89796a1839a1439a1800424e130515357a827392/src/test/java/reactor/netty/http/client/HttpClientTest.java#L337)
But I couldn't find any information on how to write a server using reactor-netty that can parse multipart information.
It seems that netty is able to do it using HttpPostRequestDecoder class but I cannot see where it fits...
I also seen InterfaceHttpData is a mother class of Attributes and FileUpload but I don't see where I can obtain these objects from the request...
Has anyone ever done this? Any clues?
Thanks a lot
request.receive()
.aggregate()
.flatMap(byteBuf -> {
FullHttpRequest dhr = new DefaultFullHttpRequest(request.version(), request.method(), request.uri(), byteBuf, request.requestHeaders(), EmptyHttpHeaders.INSTANCE);
HttpPostRequestDecoder postDecoder = new HttpPostRequestDecoder(new DefaultHttpDataFactory(false), dhr, CharsetUtil.UTF_8);
// loop data
for (InterfaceHttpData data : postDecoder.getBodyHttpDatas()) {
// attribute
if (data.getHttpDataType() == InterfaceHttpData.HttpDataType.Attribute) {
// (MemoryAttribute) data
}
// upload
else if (data.getHttpDataType() == InterfaceHttpData.HttpDataType.FileUpload) {
// (MemoryFileUpload) data
}
}
postDecoder.destroy();
dhr.release();
});
I'm working on a mobile app in react-native / redux in which I have to convert an array of base64 images into a pdf in order to send the pdf to the back-end.
Any idea about how to achieve it ?
Ok I finally found an easy solution with the help of react-native-image-to-pdf
It is promis based. In a file I called "pdfConverter.js" I created this function
import RNImageToPdf from "react-native-image-to-pdf";
export default base64Arr => {
// It is a promise based function
// Create an array containing the path of each base64 images
let base64Paths = [];
base64Paths.length = 0; // re-initialize the array for further re-use
base64Arr.forEach(base64 => {
base64Paths.push(`data:image/jpeg;base64,${base64}`);
});
// Convert base64 images to pdf from the paths array
return RNImageToPdf.createPDFbyImages({
imagePaths: base64Paths,
name: "PDF_Name"
});
};
and then call it where I need in another file :
import toPDF from "./pdfConverter.js";
toPDF(myBase64array)
.then(pdf => {
console.log("pdf ", pdf);
});
and thanks in advance for any help you guys can give me. I am trying to use mongodb, mongoose, gridfs-strea, and express to store img files on mongodb.
I do not want to store the file in a folder. I want gfs.createWriteStream to take the file directly from app.post from express. App.post is currently saving some strings through a schema model into mongodb.
The form that routes to app.post contains strings and a input for img file.
I tried to do this(dnimgfront being the name of the input):
dnimgfront:req.pipe(gfs.createWriteStream('req.body.dnimgfront'))
I am getting back.
TypeError: Object function Grid(db, mongo) {
if (!(this instanceof Grid)) {
return new Grid(db, mongo);
}
mongo || (mongo = Grid.mongo ? Grid.mongo : undefined);
My problem is I have to be able to store the img and the strings from the same app.post save function. Any ideas?
What I'm using to connect to mongodb is:
mongoose.connect('mongodb://localhost/veeltaxi');
var con=mongoose.connection;
con.once('open', function(){
console.log('connected to mongodb succesfully!')
});
Thanks in advance for your help.
First, you need an instead of gridfs-stream:
var GridStream = require('gridfs-stream');
var mongodb = require('mongodb');
var gfs = new GridStream(mongoose.connection,mongodb);
At which point you can create the write stream and pipe:
var writeStream = gfs.createWriteStream({
filename: filename, // the name of the file
content_type: mimetype, // somehow get mimetype from request,
mode: 'w' // ovewrite
});
req.pipe(writeStream);
However, at this time the Node.js MongoDB Driver is at version 2.0 which uses Streams 2, so there is no reason to use gridfs-stream if you're using that version of the mongodb lib. See the source code for v2.0.13. FYI, the stream that is implemented in the updated driver is Duplex. (Aside: gridfs-stream has its share of problems, and while actively maintained, is not very frequent.)
I am trying to use the multiple upload attribute of HTML5 to upload files.
I know it wouldn't work with IE and fall back to single file upload.
also I found some invalid html tag like min max allows opera to do the same.
I am trying to do the following:
The browse button be capable of selecting multiple files.
But the ajax should send files one by one.
My scenario is something like this:
the user selects 5 files and starts the upload . Now the ajax should firstfile send the first file, then second, and so on.
The server side script does something with the file and returns some data.
now as soon as one file upload is completed it must render that part of the result.
So as the user selects images and starts uploading the results come out as soon as each file is uploaded (and not after all the files are uploaded).
I tried something like this :
function handleFiles(files)
{ alert(files.length); //properly returns the number of files selected
for (var i = 0; i < files.length; i++) {
new FileUpload(files[i])
}
}
function FileUpload(file) {
var reader = new FileReader();
var xhr = new XMLHttpRequest();
this.xhr = xhr;
xhr.open("POST", "portfolio/add_media");
reader.onload = function(evt) {
xhr.sendAsBinary(evt.target.result);
};
reader.readAsBinaryString(file);
}
after reading the tutorial at mozilla but I end up with missing params.
. so can some one suggest me a clean solution to this
Some more details :
When I pass a single file ( with no multiple attribute ) my server recieves :
"image"=>[# < ActionDispatch::Http::UploadedFile:0x10d55be8
#tempfile=#< File:C:/Users/Gaurav/AppData/Local/Temp/RackMultipart20110701-1916-2ly4k2-0>,
#headers="Content-Disposition:
form-data; name=\"picture[image][]\";
filename=\"Desert.jpg\"\r\nContent-Type:
image/jpeg\r\n",
#content_type="image/jpeg",
#original_filename="Desert.jpg">]}}
But when I use multiple attribute and send using xhr I am able to get only one file param. How do I get the rest of the params ? esp the action dispatch thingy
You are simply sending the file data to the server, without encoding it in any way. For the server to know how to process it you need to encode your data properly (multipart/form-data encoding). Easiest way is using a FormData object: https://developer.mozilla.org/En/Using_XMLHttpRequest#Sending_files_using_a_FormData_object. Only that instead of data.append("CustomField", "This is some extra data") you would write data.append("file1", event.target.result).