How do you POST a FormData object in Angular 2?

Question

I need to upload a file and send some json along with it, I have this function:

POST_formData(url, data) {
        var headers = new Headers(), authtoken = localStorage.getItem('authtoken');

        if (authtoken) {
            headers.append("Authorization", 'Token ' + authtoken)
        }

        headers.append("Accept", 'application/json');
        headers.delete("Content-Type");

        var requestoptions = new RequestOptions({
            method: RequestMethod.Post,
            url: this.apiURL + url,
            headers: headers,
            body: data
        })

        return this.http.request(new Request(requestoptions))

        .map((res: Response) => {
            if (res) {
                return { status: res.status, json: res.json() }
            }
        })
    }

My issue is, if I set the content-type to "multipart/form-data" my server complains about the boundaries, if I remove the content-type header completely, my server complains that it "text/plain" a supported media type.

So, how do you send FormData with angular2?

Answer 1

It's an Open Isuue on Angular2 Git Repository, and there is also a Pull Request waiting to be merged, hope that it will be merged soon.

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Alternatively,

You can use XMLHttpRequest Object directly, for that.

And don't forget to set the header

xhr.setRequestHeader("enctype", "multipart/form-data");

// IE workaround for Cache issues
xhr.setRequestHeader("Cache-Control", "no-cache");
xhr.setRequestHeader("Cache-Control", "no-store");
xhr.setRequestHeader("Pragma", "no-cache");

on the XMLHttpRequest that you make.

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