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API Duplication of many_many relationships now defaults to many_many only

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Fixes https://github.com/silverstripe/silverstripe-cms/issues/1453
This commit is contained in:
Damian Mooyman 2016-10-11 17:50:19 +13:00
parent 8871210d74
commit f5f6fdce12
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4 changed files with 141 additions and 54 deletions
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2
docs/en/04_Changelogs/4.0.0.md
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@ -1317,6 +1317,8 @@ A very small number of methods were chosen for deprecation, and will be removed
* `DataObject::db` now returns composite fields.
* `DataObject::ClassName` field has been refactored into a `DBClassName` type field.
* `DataObject::can` has new method signature with `$context` parameter.
* `DataObject::duplicate` Now requires explicit flag to duplicate belongs_many_many (off by default),
but now works with unsaved relations. By default only many_many are duplicated.
* `DBHTMLText` no longer enables shortcodes by default. Two injector aliases have been created for this
class which can be used to select the correct behaviour:
* `HTMLText`: `DBHTMLText` with shortcodes enabled

89
src/ORM/DataObject.php
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@ -399,14 +399,16 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
}
/**
* Create a duplicate of this node.
* Note: now also duplicates relations.
* Create a duplicate of this node. Can duplicate many_many relations
*
* @param bool $doWrite Perform a write() operation before returning the object.
* If this is true, it will create the duplicate in the database.
* @return DataObject A duplicate of this node. The exact type will be the type of this node.
* @param bool|string $manyMany Which many-many to duplicate. Set to true to duplicate all, false to duplicate none.
* Alternatively set to the string of the relation config to duplicate
* (supports 'many_many', or 'belongs_many_many')
* @return static A duplicate of this node. The exact type will be the type of this node.
*/
public function duplicate($doWrite = true)
public function duplicate($doWrite = true, $manyMany = 'many_many')
{
$map = $this->toMap();
unset($map['Created']);
@ -414,72 +416,59 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
$clone = Injector::inst()->create(static::class, $map, false, $this->model);
$clone->ID = 0;
$clone->invokeWithExtensions('onBeforeDuplicate', $this, $doWrite);
$clone->invokeWithExtensions('onBeforeDuplicate', $this, $doWrite, $manyMany);
if ($manyMany) {
$this->duplicateManyManyRelations($this, $clone, $manyMany);
}
if ($doWrite) {
$clone->write();
$this->duplicateManyManyRelations($this, $clone);
}
$clone->invokeWithExtensions('onAfterDuplicate', $this, $doWrite);
$clone->invokeWithExtensions('onAfterDuplicate', $this, $doWrite, $manyMany);
return $clone;
}
/**
* Copies the many_many and belongs_many_many relations from one object to another instance of the name of object
* The destinationObject must be written to the database already and have an ID. Writing is performed
* automatically when adding the new relations.
* Copies the many_many and belongs_many_many relations from one object to another instance of the name of object.
*
* @param DataObject $sourceObject the source object to duplicate from
* @param DataObject $destinationObject the destination object to populate with the duplicated relations
* @return DataObject with the new many_many relations copied in
* @param bool|string $filter
*/
protected function duplicateManyManyRelations($sourceObject, $destinationObject)
protected function duplicateManyManyRelations($sourceObject, $destinationObject, $filter)
{
if (!$destinationObject || $destinationObject->ID < 1) {
user_error(
"Can't duplicate relations for an object that has not been written to the database",
E_USER_ERROR
);
// Get list of relations to duplicate
if ($filter === 'many_many' || $filter === 'belongs_many_many') {
$relations = $sourceObject->config()->get($filter);
} elseif ($filter === true) {
$relations = $sourceObject->manyMany();
} else {
throw new InvalidArgumentException("Invalid many_many duplication filter");
}
//duplicate complex relations
// DO NOT copy has_many relations, because copying the relation would result in us changing the has_one
// relation on the other side of this relation to point at the copy and no longer the original (being a
// has_one, it can only point at one thing at a time). So, all relations except has_many can and are copied
if ($sourceObject->hasOne()) {
foreach ($sourceObject->hasOne() as $name => $type) {
$this->duplicateRelations($sourceObject, $destinationObject, $name);
}
foreach ($relations as $manyManyName => $type) {
$this->duplicateManyManyRelation($sourceObject, $destinationObject, $manyManyName);
}
if ($sourceObject->manyMany()) {
foreach ($sourceObject->manyMany() as $name => $type) {
//many_many include belongs_many_many
$this->duplicateRelations($sourceObject, $destinationObject, $name);
}
}
return $destinationObject;
}
/**
* Helper function to duplicate relations from one object to another
* @param DataObject $sourceObject the source object to duplicate from
* @param DataObject $destinationObject the destination object to populate with the duplicated relations
* @param string $name the name of the relation to duplicate (e.g. members)
* Duplicates a single many_many relation from one object to another
*
* @param DataObject $sourceObject
* @param DataObject $destinationObject
* @param string $manyManyName
*/
private function duplicateRelations($sourceObject, $destinationObject, $name)
protected function duplicateManyManyRelation($sourceObject, $destinationObject, $manyManyName)
{
$relations = $sourceObject->$name();
if ($relations) {
if ($relations instanceof RelationList) { //many-to-something relation
if ($relations->count() > 0) { //with more than one thing it is related to
foreach ($relations as $relation) {
$destinationObject->$name()->add($relation);
}
}
} else { //one-to-one relation
$destinationObject->{"{$name}ID"} = $relations->ID;
}
// Ensure this component exists on the destination side as well
if (!static::getSchema()->manyManyComponent(get_class($destinationObject), $manyManyName)) {
return;
}
// Copy all components from source to destination
$source = $sourceObject->getManyManyComponents($manyManyName);
$dest = $destinationObject->getManyManyComponents($manyManyName);
foreach ($source as $item) {
$dest->add($item);
}
}

77
tests/php/ORM/DataObjectDuplicationTest.php
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@ -14,7 +14,8 @@ class DataObjectDuplicationTest extends SapphireTest
protected static $extra_dataobjects = array(
DataObjectDuplicationTest\Class1::class,
DataObjectDuplicationTest\Class2::class,
DataObjectDuplicationTest\Class3::class
DataObjectDuplicationTest\Class3::class,
DataObjectDuplicationTest\Class4::class,
);
public function testDuplicate()
@ -108,9 +109,9 @@ class DataObjectDuplicationTest extends SapphireTest
$three = DataObject::get_by_id(DataObjectDuplicationTest\Class3::class, $three->ID);
//test duplication
$oneCopy = $one->duplicate();
$twoCopy = $two->duplicate();
$threeCopy = $three->duplicate();
$oneCopy = $one->duplicate(true, true);
$twoCopy = $two->duplicate(true, true);
$threeCopy = $three->duplicate(true, true);
$oneCopy = DataObject::get_by_id(DataObjectDuplicationTest\Class1::class, $oneCopy->ID);
$twoCopy = DataObject::get_by_id(DataObjectDuplicationTest\Class2::class, $twoCopy->ID);
@ -161,4 +162,72 @@ class DataObjectDuplicationTest extends SapphireTest
"Match between relation of copy and the original"
);
}
public function testDuplicateManyManyFiltered()
{
$parent = new DataObjectDuplicationTest\Class4();
$parent->Title = 'Parent';
$parent->write();
$child = new DataObjectDuplicationTest\Class4();
$child->Title = 'Child';
$child->write();
$grandChild = new DataObjectDuplicationTest\Class4();
$grandChild->Title = 'GrandChild';
$grandChild->write();
$parent->Children()->add($child);
$child->Children()->add($grandChild);
// Duplcating $child should only duplicate grandchild
$childDuplicate = $child->duplicate(true, 'many_many');
$this->assertEquals(0, $childDuplicate->Parents()->count());
$this->assertDOSEquals(
[['Title' => 'GrandChild']],
$childDuplicate->Children()
);
// Duplicate belongs_many_many only
$belongsDuplicate = $child->duplicate(true, 'belongs_many_many');
$this->assertEquals(0, $belongsDuplicate->Children()->count());
$this->assertDOSEquals(
[['Title' => 'Parent']],
$belongsDuplicate->Parents()
);
// Duplicate all
$allDuplicate = $child->duplicate(true, true);
$this->assertDOSEquals(
[['Title' => 'Parent']],
$allDuplicate->Parents()
);
$this->assertDOSEquals(
[['Title' => 'GrandChild']],
$allDuplicate->Children()
);
}
/**
* Test duplication of UnsavedRelations
*/
public function testDuplicateUnsaved()
{
$one = new DataObjectDuplicationTest\Class1();
$one->text = "Test Text 1";
$three = new DataObjectDuplicationTest\Class3();
$three->text = "Test Text 3";
$one->threes()->add($three);
$this->assertDOSEquals(
[['text' => 'Test Text 3']],
$one->threes()
);
// Test duplicate
$dupe = $one->duplicate(false, true);
$this->assertEquals('Test Text 1', $dupe->text);
$this->assertDOSEquals(
[['text' => 'Test Text 3']],
$dupe->threes()
);
}
}

27
tests/php/ORM/DataObjectDuplicationTest/Class4.php Normal file
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@ -0,0 +1,27 @@
<?php
namespace SilverStripe\ORM\Tests\DataObjectDuplicationTest;
use SilverStripe\Dev\TestOnly;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\ManyManyList;
/**
* @method ManyManyList Children()
* @method ManyManyList Parents()
*/
class Class4 extends DataObject implements TestOnly
{
private static $db = [
'Title' => 'Varchar',
];
private static $many_many = [
'Children' => Class4::class,
];
private static $belongs_many_many = [
'Parents' => Class4::class,
];
}