toPredicate() function

Turn a wire filter into the predicate callback .where() takes.

Signature:

export declare function toPredicate(relations: RelationMap, model: string, where: Where | undefined): ((fields: Fields) => AnyExpression) | undefined;

Parameters

Parameter	Type	Description
relations	RelationMap	Relations per model, from `deriveDataLayer`.
model	string	The model the filter is written against.
where	Where \| undefined	The filter, or undefined for none.

Returns:

((fields: Fields) => AnyExpression) | undefined

The callback, or undefined when nothing constrains the query.

Remarks

A relation filters through some, matching the wire shape's meaning: a condition on a list relation asks whether **any** related row satisfies it.

contains, startsWith and endsWith become LIKE, with the operand escaped — a caller searching for a literal % or _ would otherwise get a wildcard, and the surprise is silent because the query still succeeds.

Example

const predicate = toPredicate(relations, 'User', {
    email: { contains: '@example.com' },
    roles: { role: { name: { eq: 'admin' } } },
});
const rows = await db.orm.public.User.where(predicate!).all();

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