dialog_predicate_new
Show a dialog for creating a new predicate.
Arguments:
titlepre-fills the predicate title.redirectcontrols whether the browser opens the new predicate's admin edit page and defaults totrue.
The submitted title is passed to m_predicate:insert/2; duplicate names and
permission errors are reported in the dialog.
{% button text="New predicate" action={dialog_predicate_new redirect} %}