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<?php namespace Arcanedev\LaravelHtml\Traits; |
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use ReflectionClass; |
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use ReflectionMethod; |
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/** |
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* Class FormAccessible |
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* |
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* @package Arcanedev\LaravelHtml\Traits |
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* @author ARCANEDEV <[email protected]> |
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*/ |
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trait FormAccessible |
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{ |
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/* ------------------------------------------------------------------------------------------------ |
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| Properties |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* A cached ReflectionClass instance for $this |
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* |
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* @var ReflectionClass |
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*/ |
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protected $reflection; |
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/* ------------------------------------------------------------------------------------------------ |
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| Main Functions |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* @param string $key |
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* |
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* @return mixed |
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*/ |
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public function getFormValue($key) |
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{ |
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$value = $this->getAttributeFromArray($key); |
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// If the attribute is listed as a date, we will convert it to a DateTime |
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// instance on retrieval, which makes it quite convenient to work with |
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// date fields without having to create a mutator for each property. |
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if (in_array($key, $this->getDates())) { |
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if ( ! is_null($value)) { |
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$value = $this->asDateTime($value); |
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} |
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} |
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if ($this->hasFormMutator($key)) { |
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return $this->mutateFormAttribute($key, $value); |
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} |
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return $value; |
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} |
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/* ------------------------------------------------------------------------------------------------ |
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| Other Functions |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* Check if has a form mutator. |
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* |
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* @param string $key |
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* |
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* @return bool |
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*/ |
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protected function hasFormMutator($key) |
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{ |
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$methods = $this->getReflection() |
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->getMethods(ReflectionMethod::IS_PUBLIC); |
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$mutator = collect($methods) |
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->first(function ($index, ReflectionMethod $method) use ($key) { |
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return $method->getName() === 'form' . str_studly($key) . 'Attribute'; |
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}); |
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return (bool) $mutator; |
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} |
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/** |
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* Mutate the form attribute. |
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* |
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* @param string $key |
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* @param mixed $value |
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* |
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* @return mixed |
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*/ |
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private function mutateFormAttribute($key, $value) |
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{ |
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return $this->{'form' . str_studly($key) . 'Attribute'}($value); |
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} |
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/** |
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* Get a ReflectionClass Instance |
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* |
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* @return ReflectionClass |
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*/ |
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protected function getReflection() |
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{ |
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if ( ! $this->reflection) { |
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$this->reflection = new ReflectionClass($this); |
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} |
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return $this->reflection; |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.