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If we want to give the user a message that's only visible for the current load of the page, we use the `flash()` function. Just another handy tidbit from the Flask.
New Terms
flash()
: This function stores a message in the session that will self-destruct after the response is returned.
get_flashed_messages()
: This function gets all of the flash messages stored in the session.
app.secret_key
: This configuration attribute stores the secret key that all messages are cryptographically signed with.
{% with %}
: The Flask template version of Python's with
block. Let's you temporarily define a variable. Must be closed with {% endwith %}
.
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