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BUGFIX Changed DataObject->newClassInstance() to only force changes if a differing classname was set. Setting ClassName property on new instance to trigger change detection (required for Translatable->onBeforeWrite())

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BUGFIX Only force DataObject->forceChange() on fields which aren't already marked as changed

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@75248 467b73ca-7a2a-4603-9d3b-597d59a354a9
This commit is contained in:
Ingo Schommer 2009-04-27 05:55:25 +00:00
parent f5d578ff8c
commit e55f3126fa
2 changed files with 44 additions and 12 deletions
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37
core/model/DataObject.php
View File

@ -269,9 +269,13 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
} }
/** /**
* Set the ClassName attribute; $this->class is also updated. * Set the ClassName attribute. {@link $class} is also updated.
* Warning: This will produce an inconsistent record, as the object
* instance will not automatically switch to the new subclass.
* Please use {@link newClassInstance()} for this purpose,
* or destroy and reinstanciate the record.
* *
* @param string $className The new ClassName attribute * @param string $className The new ClassName attribute (a subclass of {@link DataObject})
*/ */
function setClassName($className) { function setClassName($className) {
$this->class = trim($className); $this->class = trim($className);
@ -282,19 +286,26 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
* Create a new instance of a different class from this object's record * Create a new instance of a different class from this object's record
* This is useful when dynamically changing the type of an instance. Specifically, * This is useful when dynamically changing the type of an instance. Specifically,
* it ensures that the instance of the class is a match for the className of the * it ensures that the instance of the class is a match for the className of the
* record. * record. Don't set the {@link DataObject->class} or {@link DataObject->ClassName}
* property manually before calling this method, as it will confuse change detection.
* *
* @param string $newClassName The name of the new class * @param string $newClassName The name of the new class
* *
* @return DataObject The new instance of the new class, The exact type will be of the class name provided. * @return DataObject The new instance of the new class, The exact type will be of the class name provided.
*/ */
function newClassInstance($newClassName) { function newClassInstance($newClassName) {
$newRecord = $this->record; $originalClass = $this->ClassName;
//$newRecord['RecordClassName'] = $newRecord['ClassName'] = $newClassName; $newInstance = new $newClassName(array_merge(
$this->record,
$newInstance = new $newClassName($newRecord); array(
$newInstance->setClassName($newClassName); 'ClassName'=>$originalClass,
$newInstance->forceChange(); 'RecordClassName'=>$originalClass,
)
));
if($newClassName != $this->ClassName) {
$newInstance->setClassName($newClassName);
$newInstance->forceChange();
}
return $newInstance; return $newInstance;
} }
@ -622,11 +633,13 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
/** /**
* Forces the record to think that all its data has changed. * Forces the record to think that all its data has changed.
* Doesn't write to the database. * Doesn't write to the database. Only sets fields as changed
* if they are not already marked as changed.
*/ */
public function forceChange() { public function forceChange() {
foreach($this->record as $fieldName => $fieldVal) foreach($this->record as $fieldName => $fieldVal) {
$this->changed[$fieldName] = 1; if(!isset($this->changed[$fieldName])) $this->changed[$fieldName] = 1;
}
} }
/** /**

19
tests/DataObjectTest.php
View File

@ -604,6 +604,25 @@ class DataObjectTest extends SapphireTest {
"Defaults are populated for in-memory object from \$defaults array" "Defaults are populated for in-memory object from \$defaults array"
); );
} }
function testNewClassInstance() {
$page = $this->fixture->objFromFixture('Page', 'page1');
$changedPage = $page->newClassInstance('RedirectorPage');
$changedFields = $changedPage->getChangedFields();
// Don't write the record, it will reset changed fields
$this->assertType('RedirectorPage', $changedPage);
$this->assertEquals($changedPage->ClassName, 'RedirectorPage');
//$this->assertEquals($changedPage->RecordClassName, 'RedirectorPage');
$this->assertContains('ClassName', array_keys($changedFields));
$this->assertEquals($changedFields['ClassName']['before'], 'Page');
$this->assertEquals($changedFields['ClassName']['after'], 'RedirectorPage');
$changedPage->write();
$this->assertType('RedirectorPage', $changedPage);
$this->assertEquals($changedPage->ClassName, 'RedirectorPage');
}
} }