T6008 direct-call

A screen file calls a function of the backend directly.

Details

A screen file imports a query, a change or an action from a backend file, and holds it by its name alone: in the browser it is a record with its name and its kind, and no function. So a call that is written straight into a screen file can never work.

const rows = openOrders({ limit: 10 })                 // T6008
<button onClick={() => markPaid({ order: id })}>       // T6008

A screen reaches a function through the door, which checks its rule for the caller.

The fix

Hand the definition to what calls it by its name:

• a query: an entry of data, read(openOrders, { limit: 10 }), or useQuery(openOrders, { limit: 10 }) in the code of a view;
• a change or an action: a Form, <Form call={markPaid} with={{ order: o.id }}>, or useCall(markPaid) in the code of a view. An action may be read as an entry of data too.

See also

topic.screens, word.read, hook.useQuery, hook.useCall, tag.Form