respect-validation/docs/rules/Countable.md
Henrique Moody 48405271c5
Replace placeholder "name" with "subject"
The `{{name}}` placeholder could represent different things depending on
the state of the Result, and referring to it as `{{name}}` seems
arbitrary. This commit changes it to `{{subject}}`, which is much more
generic and it describes well what that placeholder can mean.
2025-12-26 21:30:01 +01:00

47 lines
1.2 KiB
Markdown

# Countable
- `Countable()`
Validates if the input is countable, in other words, if you're allowed to use
[count()](http://php.net/count) function on it.
```php
v::countable()->isValid([]); // true
v::countable()->isValid(new ArrayObject()); // true
v::countable()->isValid('string'); // false
```
## Templates
### `Countable::TEMPLATE_STANDARD`
| Mode | Template |
| ---------- | ----------------------------------------- |
| `default` | {{subject}} must be a countable value |
| `inverted` | {{subject}} must not be a countable value |
## Template placeholders
| Placeholder | Description |
| ----------- | ---------------------------------------------------------------- |
| `subject` | The validated input or the custom validator name (if specified). |
## Categorization
- Types
## Changelog
| Version | Description |
| ------: | ----------------------- |
| 1.0.0 | Created from `ArrayVal` |
---
See also:
- [ArrayType](ArrayType.md)
- [ArrayVal](ArrayVal.md)
- [Instance](Instance.md)
- [IterableType](IterableType.md)
- [IterableVal](IterableVal.md)