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<?php
namespace mdm\behaviors\ar;
use yii\db\ActiveRecord;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
/**
* Description of RelationTrait
*
* @property array $relatedErrors
* @property array $relatedErrorMessages
*
* @author Misbahul D Munir <misbahuldmunir@gmail.com>
* @since 1.0
*/
trait RelationTrait
{
/**
* @var array
*/
private $_old_relations = [];
/**
* @var array
*/
private $_original_relations = [];
/**
* @var array
*/
private $_process_relation = [];
/**
* @var array
*/
private $_relatedErrors = [];
/**
* @var array
*/
private $_relatedErrorMessages = [];
public function afterValidate()
{
$this->doAfterValidate();
parent::afterValidate();
}
public function afterSave($insert, $changedAttributes)
{
$this->doAfterSave();
parent::afterSave($insert, $changedAttributes);
}
/**
*
* @return array
*/
public function getRelatedErrors()
{
return $this->_relatedErrors;
}
/**
* Can be use to update ActiveForm message
* @return type
*/
public function getRelatedErrorMessages()
{
return $this->_relatedErrorMessages;
}
/**
* Populate relation
* @param string $name
* @param array||ActiveRecord||ActiveRecord[] $values
* @return boolean
*/
public function loadRelated($name, $values)
{
$relation = $this->getRelation($name, false);
if ($relation === null) {
return false;
}
$class = $relation->modelClass;
$multiple = $relation->multiple;
$link = $relation->link;
$uniqueKeys = array_flip($class::primaryKey());
foreach (array_keys($link) as $from) {
unset($uniqueKeys[$from]);
}
$uniqueKeys = array_keys($uniqueKeys);
if (isset($this->_original_relations[$name])) {
$children = $this->_original_relations[$name];
} else {
$this->_original_relations[$name] = $children = $this->$name;
}
if ($multiple) {
$newChildren = [];
$values = $values ?: [];
foreach ($values as $index => $value) {
// get from current relation
// if has child with same primary key, use this
/* @var $newChild ActiveRecord */
$newChild = null;
if (empty($relation->indexBy)) {
foreach ($children as $i => $child) {
if ($this->childIsEqual($child, $value, $uniqueKeys)) {
if ($value instanceof $class) {
$newChild = $value;
$newChild->isNewRecord = $child->isNewRecord;
$newChild->oldAttributes = $child->oldAttributes;
} else {
$newChild = $child;
}
unset($children[$i]);
break;
}
}
} elseif (isset($children[$index])) {
$child = $children[$index];
if ($value instanceof $class) {
$newChild = $value;
$newChild->isNewRecord = $child->isNewRecord;
$newChild->oldAttributes = $child->oldAttributes;
} else {
$newChild = $child;
}
unset($children[$index]);
}
if ($newChild === null) {
$newChild = $value instanceof $class ? $value : new $class;
}
if (isset($this->relatedScenarios, $this->relatedScenarios[$name])) {
$newChild->scenario = $this->relatedScenarios[$name];
}
if (!$value instanceof $class) {
$newChild->load($value, '');
}
foreach ($link as $from => $to) {
$newChild->$from = $this->$to;
}
$newChildren[$index] = $newChild;
}
$this->_old_relations[$name] = $children;
$this->populateRelation($name, $newChildren);
$this->_process_relation[$name] = true;
} else {
$newChild = null;
if ($children === null) {
if ($values !== null) {
$newChild = $values instanceof $class ? $values : new $class;
$this->_process_relation[$name] = true;
}
} else {
if ($values !== null) {
$newChild = $values instanceof $class ? $values : $children;
if ($values instanceof $class) {
$newChild = $values;
$newChild->oldAttributes = $children->oldAttributes;
$newChild->isNewRecord = $children->isNewRecord;
} else {
$newChild = $children;
}
} else {
$this->_old_relations[$name] = [$children];
}
$this->_process_relation[$name] = true;
}
if ($newChild !== null) {
if (isset($this->relatedScenarios[$name])) {
$newChild->scenario = $this->relatedScenarios[$name];
}
if (!$values instanceof $class) {
$newChild->load($values, '');
}
foreach ($link as $from => $to) {
$newChild->$from = $this->$to;
}
}
$this->populateRelation($name, $newChild);
}
return true;
}
/**
* Handler for event afterValidate
*/
protected function doAfterValidate()
{
$handleValidate = method_exists($this, 'beforeRValidate');
/* @var $child ActiveRecord */
foreach ($this->_process_relation as $name => $process) {
if (!$process) {
continue;
}
if (!isset($this->clearError) || $this->clearError) {
$this->_relatedErrors[$name] = [];
$this->_relatedErrorMessages[$name] = [];
}
$error = false;
$relation = $this->getRelation($name);
$children = $this->$name;
if ($relation->multiple) {
foreach ($children as $index => $child) {
if ($handleValidate) {
$this->beforeRValidate($child, $index, $name);
}
$event = new RelationEvent([
'child' => $child,
'relation' => $name,
'index' => $index,
]);
$this->trigger(RelationEvent::BEFORE_VALIDATE, $event);
if (!$child->validate()) {
$errors = $this->_relatedErrors[$name][$index] = $child->getFirstErrors();
foreach ($errors as $attribute => $message) {
$this->_relatedErrorMessages[$name][Html::getInputId($child, "[$index]$attribute")] = $message;
}
$this->addError($name, "{$name}[{$index}]: " . reset($errors));
$error = true;
}
}
} else {
if ($handleValidate) {
$this->beforeRValidate($children, null, $name);
}
$event = new RelationEvent([
'child' => $child,
'relation' => $name,
]);
$this->trigger(RelationEvent::BEFORE_VALIDATE, $event);
if (!$children->validate()) {
$errors = $this->_relatedErrors[$name] = $child->getFirstErrors();
foreach ($errors as $attribute => $message) {
$this->_relatedErrorMessages[$name][Html::getInputId($child, $attribute)] = $message;
}
$this->addError($name, "$name: " . reset($errors));
$error = true;
}
}
}
}
/**
* Handler for event afterSave
*/
protected function doAfterSave()
{
$handleBefore = method_exists($this, 'beforeRSave');
$handleAfter = method_exists($this, 'afterRSave');
$deleteUnsaved = isset($this->deleteUnsaved) ? $this->deleteUnsaved : true;
foreach ($this->_process_relation as $name => $process) {
if (!$process) {
continue;
}
$delUnsaved = is_array($deleteUnsaved) ? (isset($deleteUnsaved[$name]) ? $deleteUnsaved[$name] : true) : $deleteUnsaved;
// delete old related
/* @var $child ActiveRecord */
if (isset($this->_old_relations[$name])) {
foreach ($this->_old_relations[$name] as $child) {
$child->delete();
}
unset($this->_old_relations[$name]);
}
// save new relation
$relation = $this->getRelation($name);
$link = $relation->link;
$children = $this->$name;
if ($relation->multiple) {
foreach ($children as $index => $child) {
foreach ($link as $from => $to) {
$child->$from = $this->$to;
}
$oke = $handleBefore === false || $this->beforeRSave($child, $index, $name) !== false;
$event = new RelationEvent([
'child' => $child,
'relation' => $name,
'index' => $index,
]);
$this->trigger(RelationEvent::BEFORE_SAVE, $event);
$oke = $oke && $event->isValid;
if ($oke) {
$child->save(false);
if ($handleAfter) {
$this->afterRSave($child, $index, $name);
}
$event = new RelationEvent([
'child' => $child,
'relation' => $name,
'index' => $index,
]);
$this->trigger(RelationEvent::AFTER_SAVE, $event);
} elseif ($delUnsaved && !$child->getIsNewRecord()) {
$child->delete();
}
}
} else {
/* @var $children ActiveRecord */
if ($children !== null) {
foreach ($link as $from => $to) {
$children->$from = $this->$to;
}
$oke = $handleBefore === false || $this->beforeRSave($children, null, $name) !== false;
$event = new RelationEvent([
'child' => $children,
'relation' => $name,
]);
$this->trigger(RelationEvent::BEFORE_SAVE, $event);
$oke = $oke && $event->isValid;
if ($oke) {
$children->save(false);
if ($handleAfter) {
$this->afterRSave($children, null, $name);
}
$event = new RelationEvent([
'child' => $children,
'relation' => $name,
]);
$this->trigger(RelationEvent::AFTER_SAVE, $event);
} elseif ($delUnsaved && !$children->getIsNewRecord()) {
$child->delete();
}
}
}
unset($this->_process_relation[$name], $this->_original_relations[$name]);
}
}
/**
* Check is boot of model is equal
* @param ActiveRecord|array $model1
* @param ActiveRecord|array $model2
* @param array $keys
* @return boolean
*/
protected function childIsEqual($model1, $model2, $keys)
{
if (method_exists($this, 'isEqual')) {
return $this->isEqual($model1, $model2, $keys);
}
if (empty($keys)) {
return false;
}
foreach ($keys as $key) {
if (ArrayHelper::getValue($model1, $key) != ArrayHelper::getValue($model2, $key)) {
return false;
}
}
return true;
}
}
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