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<?php |
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namespace Mbright\Validation\Rule\Validate\MySql; |
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use Mbright\Validation\Rule\Validate\ValidateRuleInterface; |
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/** |
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* Validates that data can be sent into one of the following column types: |
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* - Decimal |
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* - Numeric |
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* - Float |
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* - Double |
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*/ |
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class PointNumber implements ValidateRuleInterface |
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{ |
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/** |
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* Represents the precision of the float. |
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* |
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* @var int |
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*/ |
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protected $precision; |
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/** |
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* Represents the scale for the float which determines the range of accepted values. |
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* |
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* @var int |
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*/ |
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protected $scale; |
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/** |
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* @param int $precision |
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* @param int $scale |
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*/ |
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public function __construct(int $precision = 10, int $scale = 0) |
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{ |
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$this->precision = $precision; |
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$this->scale = $scale; |
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} |
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/** |
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* Check that the value in the given field is a valid fixed point with the appropriate precision and scale. |
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* |
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* @param object $subject |
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* @param string $field |
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* |
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* @return bool |
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*/ |
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public function __invoke($subject, string $field): bool |
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{ |
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$value = $subject->$field; |
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if (!is_float($value)) { |
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return false; |
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} |
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// separate the digits based on if they come before or after the decimal |
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$segments = explode('.', (string) $value); |
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$numBeforeDecimal = count($segments[0]); |
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$numAfterDecimal = count($segments[1] ?? []); |
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return $this->checkPrecision($numBeforeDecimal, $numAfterDecimal) && $this->checkScale($numAfterDecimal); |
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} |
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/** |
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* Ensures the correct precision. |
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* |
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* @param int $numBeforeDecimal |
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* @param int $numAfterDecimal |
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* |
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* @return bool |
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*/ |
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protected function checkPrecision(int $numBeforeDecimal, int $numAfterDecimal) |
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{ |
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return $numAfterDecimal + $numBeforeDecimal <= $this->precision; |
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} |
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/** |
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* Ensures the correct scale. |
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* |
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* @param int $numAfterDecimal |
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* |
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* @return bool |
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*/ |
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protected function checkScale(int $numAfterDecimal) |
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{ |
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return $numAfterDecimal <= $this->scale; |
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} |
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} |
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MarcusFulbright /
Validate
