respect-validation/docs/validators/Call.md

Call

• Call(callable $callable, Validator $validator)

Validates the return of a [callable][] for a given input.

Consider the following variable:

$url = 'http://www.google.com/search?q=respect.github.com';

To validate every part of this URL we could use the native parse_url function to break its parts:

$parts = parse_url($url);

This function returns an array containing scheme, host, path and query. We can validate them this way:

v::arrayVal()
    ->key('scheme', v::startsWith('http'))
    ->key('host', v::domain())
    ->key('path', v::stringType())
    ->key('query', v::notBlank());

Using v::call() you can do this in a single chain:

v::call(
    'parse_url',
     v::arrayVal()
        ->key('scheme', v::startsWith('http'))
        ->key('host',   v::domain())
        ->key('path',   v::stringType())
        ->key('query',  v::notBlank())
)->assert($url);
// Validation passes successfully

Templates

Call::TEMPLATE_STANDARD

Mode	Template
default	{{input}} must be a suitable argument for {{callable}}
inverted	{{input}} must not be a suitable argument for {{callable}}

Template placeholders

Placeholder	Description
callable
input
subject	The validated input or the custom validator name (if specified).

Categorization

• Callables
• Nesting
• Transformations

Changelog

Version	Description
0.3.9	Created

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See also:

• Callback
• Each
• Lazy
• Sorted