# login_simple_rule · FT4 Rell API · Chromia Docs (concept)

> function login_ simple_ rule(rule: rule_expression ): gtv Alias for map_rule Parameters rule — the rule to convert

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.auth/login_simple_rule/

FUNCTION

# login\_simple\_rule

```signature
function login_simple_rule(rule: rule_expression): gtv
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/auth/login.rell#lines-95)

Alias for `map_rule`

**Parameters**

* **rule** — the rule to convert

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.core.auth/login_simple_rule.html)Generated API reference, mirrored from the live docs