trait FormStateValuesTrait

Same name in other branches
  1. 8.9.x core/lib/Drupal/Core/Form/FormStateValuesTrait.php \Drupal\Core\Form\FormStateValuesTrait
  2. 10 core/lib/Drupal/Core/Form/FormStateValuesTrait.php \Drupal\Core\Form\FormStateValuesTrait
  3. 11.x core/lib/Drupal/Core/Form/FormStateValuesTrait.php \Drupal\Core\Form\FormStateValuesTrait

Provides methods to manage form state values.

Hierarchy

See also

\Drupal\Core\Form\FormStateInterface

Related topics

Form generation
Describes how to generate and manipulate forms and process form submissions.
1 file declares its use of FormStateValuesTrait
FormStateValuesTraitTest.php in core/tests/Drupal/Tests/Core/Form/FormStateValuesTraitTest.php

File

core/lib/Drupal/Core/Form/FormStateValuesTrait.php, line 14

Namespace

Drupal\Core\Form
View source 
trait FormStateValuesTrait {
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::getValues()
     */
    public abstract function &getValues();
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::getValue()
     */
    public function &getValue($key, $default = NULL) {
        $exists = NULL;
        $value =& NestedArray::getValue($this->getValues(), (array) $key, $exists);
        if (!$exists) {
            $value = $default;
        }
        return $value;
    }
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::setValues()
     */
    public function setValues(array $values) {
        $existing_values =& $this->getValues();
        $existing_values = $values;
        return $this;
    }
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::setValue()
     */
    public function setValue($key, $value) {
        NestedArray::setValue($this->getValues(), (array) $key, $value, TRUE);
        return $this;
    }
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::unsetValue()
     */
    public function unsetValue($key) {
        NestedArray::unsetValue($this->getValues(), (array) $key);
        return $this;
    }
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::hasValue()
     */
    public function hasValue($key) {
        $exists = NULL;
        $value = NestedArray::getValue($this->getValues(), (array) $key, $exists);
        return $exists && isset($value);
    }
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::isValueEmpty()
     */
    public function isValueEmpty($key) {
        $exists = NULL;
        $value = NestedArray::getValue($this->getValues(), (array) $key, $exists);
        return !$exists || empty($value);
    }
    
    /**
     * Implements \Drupal\Core\Form\FormStateInterface::setValueForElement()
     */
    public function setValueForElement(array $element, $value) {
        return $this->setValue($element['#parents'], $value);
    }

}

Members

Title Modifiers Object type Summary Overrides
FormStateValuesTrait::getValue public function Implements \Drupal\Core\Form\FormStateInterface::getValue()
FormStateValuesTrait::getValues abstract public function Implements \Drupal\Core\Form\FormStateInterface::getValues() 3
FormStateValuesTrait::hasValue public function Implements \Drupal\Core\Form\FormStateInterface::hasValue()
FormStateValuesTrait::isValueEmpty public function Implements \Drupal\Core\Form\FormStateInterface::isValueEmpty()
FormStateValuesTrait::setValue public function Implements \Drupal\Core\Form\FormStateInterface::setValue()
FormStateValuesTrait::setValueForElement public function Implements \Drupal\Core\Form\FormStateInterface::setValueForElement()
FormStateValuesTrait::setValues public function Implements \Drupal\Core\Form\FormStateInterface::setValues()
FormStateValuesTrait::unsetValue public function Implements \Drupal\Core\Form\FormStateInterface::unsetValue()

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