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API CHANGE: add a remote relation class getter to DataObject

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This commit is contained in:
Mateusz Uzdowski 2012-04-20 16:03:38 +12:00
parent 47e3052aaa
commit 6469d83569
2 changed files with 41 additions and 1 deletions
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33
model/DataObject.php
View File

@ -1342,7 +1342,38 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
return singleton($componentClass)->extendedSQL($combinedFilter, $sort, $limit, $join);
}
/**
* Find the foreign class of a relation on this DataObject, regardless of the relation type.
*
* @param $relationName Relation name.
* @return string Class name, or null if not found.
*/
public function getRelationClass($relationName) {
// Go through all relationship configuration fields.
$candidates = array_merge(
($relations = Config::inst()->get($this->class, 'has_one')) ? $relations : array(),
($relations = Config::inst()->get($this->class, 'has_many')) ? $relations : array(),
($relations = Config::inst()->get($this->class, 'many_many')) ? $relations : array(),
($relations = Config::inst()->get($this->class, 'belongs_many_many')) ? $relations : array(),
($relations = Config::inst()->get($this->class, 'belongs_to')) ? $relations : array()
);
if (isset($candidates[$relationName])) {
$remoteClass = $candidates[$relationName];
// If dot notation is present, extract just the first part that contains the class.
if(($fieldPos = strpos($remoteClass, '.'))!==false) {
return substr($remoteClass, 0, $fieldPos);
}
// Otherwise just return the class
return $remoteClass;
}
return null;
}
/**
* Tries to find the database key on another object that is used to store a relationship to this class. If no join
* field can be found it defaults to 'ParentID'.

9
tests/model/DataObjectTest.php
View File

@ -183,6 +183,15 @@ class DataObjectTest extends SapphireTest {
$this->assertEquals($this->idFromFixture('DataObjectTest_Team', 'team1'), $captain1->FavouriteTeamID);
}
function testGetRelationClass() {
$obj = new DataObjectTest_Player();
$this->assertEquals(singleton('DataObjectTest_Player')->getRelationClass('FavouriteTeam'), 'DataObjectTest_Team', 'has_one is properly inspected');
$this->assertEquals(singleton('DataObjectTest_Company')->getRelationClass('CurrentStaff'), 'DataObjectTest_Staff', 'has_many is properly inspected');
$this->assertEquals(singleton('DataObjectTest_Team')->getRelationClass('Players'), 'DataObjectTest_Player', 'many_many is properly inspected');
$this->assertEquals(singleton('DataObjectTest_Player')->getRelationClass('Teams'), 'DataObjectTest_Team', 'belongs_many_many is properly inspected');
$this->assertEquals(singleton('DataObjectTest_CEO')->getRelationClass('Company'), 'DataObjectTest_Company', 'belongs_to is properly inspected');
}
function testGetHasOneRelations() {
$captain1 = $this->objFromFixture("DataObjectTest_Player", "captain1");
/* There will be a field called (relname)ID that contains the ID of the object linked to via the has_one relation */