HTML forms with POST method in Flask - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the POST method do in an HTML form?

The POST method sends form data to the server in the request body, keeping it hidden from the URL. It's used for submitting data securely.

beginner

In Flask, how do you access data sent by a POST form?

You use request.form to get form data sent by POST in Flask. For example, request.form['fieldname'] retrieves the value of a form field.

beginner

Why should you use the POST method instead of GET for sensitive form data?

POST keeps data out of the URL, so sensitive info like passwords or personal details are not visible in browser history or server logs.

beginner

What HTML attribute specifies the HTTP method for a form?

The method attribute in the <form> tag sets the HTTP method, e.g., <form method="post">.

beginner

How do you define a route in Flask to handle POST form submissions?

Use the @app.route decorator with methods=['POST']. For example: @app.route('/submit', methods=['POST']).

Which HTML form attribute sets the method to POST?

A submit="post"

B method="post"

C type="post"

D action="post"

The method attribute defines the HTTP method; method="post" sets it to POST.

In Flask, which object holds POST form data?

A request.data

B request.args

C request.form

D request.json

request.form contains form data sent via POST.

Why is POST preferred over GET for submitting passwords?

A POST hides data from the URL

B POST encrypts data automatically

C POST sends data in the URL

D POST is faster

POST sends data in the request body, keeping it out of the URL and browser history.

Which Flask route decorator handles POST requests?

A @app.route('/path', methods=['POST'])

B @app.route('/path', methods=['GET'])

C @app.route('/path')

D @app.route('/path', methods=['PUT'])

To handle POST, specify methods=['POST'] in the route decorator.

What does the action attribute in a form specify?

A The form's ID

B The HTTP method to use

C The form's CSS style

D The URL to send form data to

The action attribute sets the URL where form data is sent.

Explain how to create an HTML form that sends data using POST and how to handle it in Flask.

Think about the form attributes and Flask's request object.

Why is it important to use POST instead of GET for submitting sensitive information in forms?

Consider how data is exposed in URLs versus request bodies.