How can I implement file uploads in Flask using WTForms?
An example of an AI chatbot conversation about file uploads in Flask with WTForms.
How can I implement file uploads in Flask using WTForms?
You can use Flask-WTF to handle file uploads easily. First, ensure you have Flask-WTF installed.
What do I need to install to get started?
You need to install Flask and Flask-WTF. You can do this using pip: pip install Flask Flask-WTF.
Can you show me a basic example of a file upload form?
Sure! Here's a simple example:
from flask import Flask, render_template, request
from flask_wtf import FlaskForm
from wtforms import FileField, SubmitField
from wtforms.validators import DataRequired
app = Flask(__name__)
app.secret_key = 'your_secret_key'
class UploadForm(FlaskForm):
file = FileField('File', validators=[DataRequired()])
submit = SubmitField('Upload')
@app.route('/', methods=['GET', 'POST'])
def upload_file():
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)
if __name__ == '__main__':
app.run(debug=True)
What should I include in the HTML template for the form?
In your HTML template, you should include the form and set the enctype to multipart/form-data. Here's a basic example:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>File Upload</title>
</head>
<body>
<h1>Upload a File</h1>
<form method="POST" enctype="multipart/form-data">
{{ form.hidden_tag() }}
{{ form.file.label }} {{ form.file() }}
{{ form.submit() }}
</form>
</body>
</html>
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