File upload

The person uploads a file. Programs, scripts and web pages are never accepted.

Stores: an answer. Can go: the form page, inside a panel, inside columns. Field key prefix: field.

How it looks

The first picture is the question’s settings panel in the builder. The second is the question as the person filling in the form sees it.

Question settings for the File upload question

The File upload question as the person filling the form sees it

Options

Option	What it does	Kind	Default
Question label	The text the responder sees. On a page break it is the page title, on a panel the heading, on a button its text, on a consent its statement. Also available on a table column.	Text	Blank
Help text	A line of guidance under the question. On a page break it is the page description.	Long text	Blank
Required	The responder must answer before they can continue. Also available on a table column.	On or off	Off
Field key	The name expressions use: answers.<key>. Letters, numbers and underscore, not starting with a digit, unique in the form. Also available on a table column.	Text
When this answer changes	Actions that set, toggle or clear form variables when the answer changes. On a button they run on click.	Actions	None
Files accepted	Which kinds of file are taken. A question made before this setting existed takes any file. Choices: Documents and images, Documents only, Images only, Any file.	A choice	Documents and images

Logic and validation

Each of these takes an expression, written by hand or with the logic builder.

Setting	What it does
Show this question when	Shows the question only while the expression is true.
Required when	Makes the question required only while the expression is true.
Valid when	Refuses the answer unless the expression is true.
Computed value (read-only)	A value worked out by the server from other answers; whatever is submitted is ignored.
Default value (editable)	Pre-fills the question; the responder can change it.