How can I implement file uploads in my WTForms application?

How can I implement file uploads in my WTForms application?

You can use the FileField in WTForms to handle file uploads. Do you need help with the code?

Yes, please provide a code example.

Sure! Here's a simple example:

from flask import Flask, request, render_template
from flask_wtf import FlaskForm
from wtforms import FileField, SubmitField

class UploadForm(FlaskForm):
    file = FileField('Upload File')
    submit = SubmitField('Submit')

app = Flask(__name__)
app.secret_key = 'your_secret_key'

@app.route('/', methods=['GET', 'POST'])
def upload():
    form = UploadForm()
    if form.validate_on_submit():
        file = form.file.data
        # Save the file or process it
        return 'File uploaded successfully!'
    return render_template('upload.html', form=form)

This code sets up a basic file upload form.

What do I need to do to handle the uploaded file?

You need to save the file to a directory on your server. You can use the save() method from the file object. Here's how:

file.save(f'uploads/{file.filename}')

Make sure the 'uploads' directory exists!