javascript - How to upload file using multipart form data in nativescript? - Stack Overflow

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I need to upload files along with other data from a Nativescript app. Here is what I am doing:

const data = new FormData();
data.append('name', 'Some Name');
data.append('profile_picture', profilePic);

Here profile pic is a nativescript File object. It does not seem to work as expected. It is sent to server as "[object object]".

How to do upload the file in form data?

I need to upload files along with other data from a Nativescript app. Here is what I am doing:

const data = new FormData();
data.append('name', 'Some Name');
data.append('profile_picture', profilePic);

Here profile pic is a nativescript File object. It does not seem to work as expected. It is sent to server as "[object object]".

How to do upload the file in form data?

• javascript
• file
• file-upload
• nativescript

Share Improve this question Follow edited Sep 5, 2016 at 16:50 RPichioli 3,34533 gold badges2727 silver badges3131 bronze badges asked Sep 5, 2016 at 16:34 Prabhakar BhatPrabhakar Bhat 1,46322 gold badges1212 silver badges1616 bronze badges 4

• Have your tried this? nativescript.github.io/nativescript-background-http – inf3rno Commented Sep 5, 2016 at 18:07
• 4 Yes, it only allows to upload files directly as octet stream. Not as part of formdata. – Prabhakar Bhat Commented Sep 5, 2016 at 18:31
• 2 If you want to send it as a form data, you could encode your picture in base64 – Kansen Commented Sep 6, 2016 at 15:05
• 1 That's fine for picture, but elsewhere I need to send video as well. base64 may not be the best way. – Prabhakar Bhat Commented Sep 8, 2016 at 6:18

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2 Answers 2

Sorted by: Reset to default 4

Since January https://github./NativeScript/nativescript-background-http supports multipart uploads, too.

Example:

var request = {
    url: url,
    method: "POST",
    headers: {
        "Content-Type": "application/octet-stream",
        "File-Name": name
    },
    description: description
};

var params = [{name: "test", value: "value"}, {name:"fileToUpload", filename: file, mimeType: 'image/jpeg'}];
task = session.multipartUpload(params, request);

Binary support should be ing in NativeScript v6.3. See this issue. You should then no longer need to use nativescript-background-http. You can see my full write-up here.

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