I try to add files on the blobstore, i have found some examples with go but these are examples with a html template and i now send images from my react-native app that calls my api in go to add file on blobstore.
So how to add a file on blobstore with a file i get with r.FormFile() in go ?
example i have found :
func sampleHandler(w http.ResponseWriter, r *http.Request) {
// [START uploading_a_blob_2]
var rootTemplate = template.Must(template.New("root").Parse(rootTemplateHTML))
const rootTemplateHTML = `
<html><body>
<form action="{{.}}" method="POST" enctype="multipart/form-data">
Upload File: <input type="file" name="file"><br>
<input type="submit" name="submit" value="Submit">
</form></body></html>
`
// [END uploading_a_blob_2]
// [START uploading_a_blob_1]
ctx := appengine.NewContext(r)
uploadURL, err := blobstore.UploadURL(ctx, "/upload", nil)
if err != nil {
serveError(ctx, w, err)
return
}
w.Header().Set("Content-Type", "text/html")
err = rootTemplate.Execute(w, uploadURL)
if err != nil {
log.Errorf(ctx, "%v", err)
}
// [END uploading_a_blob_1]
}
Thank's :)
My suggestion would be to provide a small JSON API that your React Native app can call that will give you back an upload URL generated by blobstore.UploadURL. You should then be able to POST to the URL as normal.