CalcBuilder Tutorial

A Linked List is a drop-down whose options change according to the selection made in a parent drop-down — e.g. Country → City.

Key settings

• Depends on field — the parent Option List.
• Options — grouped by the parent value, so each parent choice reveals its own child options.
• Linked List SQL is the same idea but the child options come from a database query keyed by the parent value.

In code

Read as $variable — the value of the child option the visitor ended on.

Part of the Form Fields reference. All types are demonstrated together in the Field Types Showcase.