mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
c573d51d4c
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@65123 467b73ca-7a2a-4603-9d3b-597d59a354a9
194 lines
6.9 KiB
PHP
194 lines
6.9 KiB
PHP
<?php
|
|
|
|
require_once 'thirdparty/spyc/Spyc.php';
|
|
|
|
/**
|
|
* Uses the Spyc library to parse a YAML document (see http://yaml.org).
|
|
* YAML is a simple markup languages that uses tabs and colons instead of the more verbose XML tags,
|
|
* and because of this much better for developers creating files by hand.
|
|
*
|
|
* The contents of the YAML file are broken into three levels:
|
|
* - Top level: class names - Page and ErrorPage. This is the name of the dataobject class that should be created.
|
|
* The fact that ErrorPage is actually a subclass is irrelevant to the system populating the database.
|
|
* Each identifier you specify delimits a new database record.
|
|
* This means that every record needs to have an identifier, whether you use it or not.
|
|
* - Third level: fields - each field for the record is listed as a 3rd level entry.
|
|
* In most cases, the fieldÕs raw content is provided.
|
|
* However, if you want to define a relationship, you can do so using "=>"
|
|
*
|
|
* There are a couple of lines like this:
|
|
* @example Parent: =>Page.about
|
|
* This will tell the system to set the ParentID database field to the ID of the Page object with the identifier ÒaboutÓ.
|
|
* This can be used on any has-one or many-many relationship.
|
|
* Note that we use the name of the relationship (Parent), and not the name of the database field (ParentID)
|
|
*
|
|
* On many-many relationships, you should specify a comma separated list of values.
|
|
* @example MyRelation: =>Class.inst1,=>Class.inst2,=>Class.inst3
|
|
* An crucial thing to note is that the YAML file specifies DataObjects, not database records.
|
|
* The database is populated by instantiating DataObject objects, setting the fields listed, and calling write().
|
|
* This means that any onBeforeWrite() or default value logic will be executed as part of the test.
|
|
* This forms the basis of our testURLGeneration() test above.
|
|
*
|
|
* For example, the URLSegment value of Page.staffduplicate is the same as the URLSegment value of Page.staff.
|
|
* When the fixture is set up, the URLSegment value of Page.staffduplicate will actually be my-staff-2.
|
|
*
|
|
* Finally, be aware that requireDefaultRecords() is not called by the database populator -
|
|
* so you will need to specify standard pages such as 404 and home in your YAML file.
|
|
*
|
|
* <code>
|
|
* Page:
|
|
* home:
|
|
* Title: Home
|
|
* about:
|
|
* Title: About Us
|
|
* staff:
|
|
* Title: Staff
|
|
* URLSegment: my-staff
|
|
* Parent: =>Page.about
|
|
* staffduplicate:
|
|
* Title: Staff
|
|
* URLSegment: my-staff
|
|
* Parent: =>Page.about
|
|
* products:
|
|
* Title: Products
|
|
* ErrorPage:
|
|
* 404:
|
|
* Title: Page not Found
|
|
* ErrorCode: 404
|
|
* </code>
|
|
*
|
|
* @package sapphire
|
|
* @subpackage core
|
|
*
|
|
* @see http://spyc.sourceforge.net/
|
|
*
|
|
* @todo Write unit test for YamlFixture
|
|
*
|
|
* @param $fixtureFile The location of the .yml fixture file, relative to the site base dir
|
|
*/
|
|
class YamlFixture extends Object {
|
|
|
|
/**
|
|
* The location of the .yml fixture file, relative to the site base dir
|
|
*
|
|
* @var string
|
|
*/
|
|
protected $fixtureFile;
|
|
|
|
/**
|
|
* Array of fixture items
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $fixtureDictionary;
|
|
|
|
function __construct($fixtureFile) {
|
|
if(!file_exists(Director::baseFolder().'/'. $fixtureFile)) {
|
|
user_error('YamlFixture::__construct(): Fixture path "' . $fixtureFile . '" not found', E_USER_ERROR);
|
|
}
|
|
|
|
$this->fixtureFile = $fixtureFile;
|
|
}
|
|
|
|
/**
|
|
* Get the ID of an object from the fixture.
|
|
* @param $className The data class, as specified in your fixture file. Parent classes won't work
|
|
* @param $identifier The identifier string, as provided in your fixture file
|
|
*/
|
|
public function idFromFixture($className, $identifier) {
|
|
return $this->fixtureDictionary[$className][$identifier];
|
|
}
|
|
|
|
/**
|
|
* Return all of the IDs in the fixture of a particular class name.
|
|
*
|
|
* @return A map of fixture-identifier => object-id
|
|
*/
|
|
public function allFixtureIDs($className) {
|
|
return $this->fixtureDictionary[$className];
|
|
}
|
|
|
|
/**
|
|
* Get an object from the fixture.
|
|
*
|
|
* @param $className The data class, as specified in your fixture file. Parent classes won't work
|
|
* @param $identifier The identifier string, as provided in your fixture file
|
|
*/
|
|
public function objFromFixture($className, $identifier) {
|
|
$id = $this->idFromFixture($className, $identifier);
|
|
if($id) return DataObject::get_by_id($className, $id);
|
|
}
|
|
|
|
/**
|
|
* Load a YAML fixture file into the database.
|
|
* Once loaded, you can use idFromFixture() and objFromFixture() to get items from the fixture.
|
|
*
|
|
* Caution: In order to support reflexive relations which need a valid object ID,
|
|
* the record is written twice: first after populating all non-relational fields,
|
|
* then again after populating all relations (has_one, has_many, many_many).
|
|
*/
|
|
public function saveIntoDatabase() {
|
|
$parser = new Spyc();
|
|
$fixtureContent = $parser->load(Director::baseFolder().'/'.$this->fixtureFile);
|
|
$this->fixtureDictionary = array();
|
|
foreach($fixtureContent as $dataClass => $items) {
|
|
foreach($items as $identifier => $fields) {
|
|
$obj = new $dataClass();
|
|
|
|
// If an ID is explicitly passed, then we'll sort out the initial write straight away
|
|
// This is just in case field setters triggered by the population code in the next block
|
|
// Call $this->write(). (For example, in FileTest)
|
|
if(isset($fields['ID'])) {
|
|
$obj->ID = $fields['ID'];
|
|
$obj->write(false, true);
|
|
}
|
|
|
|
// Populate the dictionary with the ID
|
|
foreach($fields as $fieldName => $fieldVal) {
|
|
if($obj->many_many($fieldName) || $obj->has_many($fieldName) || $obj->has_one($fieldName)) continue;
|
|
$obj->$fieldName = $this->parseFixtureVal($fieldVal);
|
|
}
|
|
$obj->write();
|
|
|
|
// has to happen before relations in case a class is referring to itself
|
|
$this->fixtureDictionary[$dataClass][$identifier] = $obj->ID;
|
|
|
|
// Populate all relations
|
|
foreach($fields as $fieldName => $fieldVal) {
|
|
if($obj->many_many($fieldName) || $obj->has_many($fieldName)) {
|
|
$parsedItems = array();
|
|
$items = split(' *, *',trim($fieldVal));
|
|
foreach($items as $item) {
|
|
$parsedItems[] = $this->parseFixtureVal($item);
|
|
}
|
|
$obj->write();
|
|
if($obj->has_many($fieldName)) {
|
|
$obj->getComponents($fieldName)->setByIDList($parsedItems);
|
|
} elseif($obj->many_many($fieldName)) {
|
|
$obj->getManyManyComponents($fieldName)->setByIDList($parsedItems);
|
|
}
|
|
} elseif($obj->has_one($fieldName)) {
|
|
$obj->{$fieldName . 'ID'} = $this->parseFixtureVal($fieldVal);
|
|
}
|
|
}
|
|
$obj->write();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse a value from a fixture file. If it starts with => it will get an ID from the fixture dictionary
|
|
*/
|
|
protected function parseFixtureVal($fieldVal) {
|
|
// Parse a dictionary reference - used to set foreign keys
|
|
if(substr($fieldVal,0,2) == '=>') {
|
|
list($a, $b) = explode('.', substr($fieldVal,2), 2);
|
|
return $this->fixtureDictionary[$a][$b];
|
|
|
|
// Regular field value setting
|
|
} else {
|
|
return $fieldVal;
|
|
}
|
|
}
|
|
}
|
|
?>
|