How To Upload Multiple Files With Flask-wtf?

I am trying to upload multiple files with flask-wtf. I can upload a single file with no problems and I've been able to change the html tag to accept multiple files but as of yet I

Solution 1:

Instead of using the FileField, use the MultipleFileField. It supports multiple files.

For example:

from wtforms import MultipleFileField

classNewFileForm(FlaskForm):
    files = MultipleFileField('File(s) Upload')

Then to access the files:

@app.route('/', methods=['GET', 'POST'])
def upload():
    form = NewFileForm()
    if form.validate_on_submit():
        files_filenames = []
        for file in form.files.data:
            file_filename = secure_filename(file.filename)
            data.save(os.path.join(app.config['UPLOAD_FOLDER'], data_filename))
            files_filenames.append(file_filename)
        print(files_filenames)
        return render_template('input_form.html', form=form)
    return render_template('input_form.html', form=form)

Solution 2:

from wtforms import MultipleFileField
from werkzeug import secure_filename

classUpload_Form(FlaskForm):
   files = MultipleFileField(render_kw={'multiple': True})

And the route

@app.route('/', methods=['GET', 'POST'])defupload():
   form = Upload_Form()
   if form.validate_on_submit():
      for file in form.files.data:
         file_name = secure_filename(file.filename)
         file.save(file_name)