silverstripe-framework/dev/ModelViewer.php

195 lines
4.6 KiB
PHP
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<?php
/**
* Gives you a nice way of viewing your data model.
* Access at dev/viewmodel.
*
* Requirements: http://graphviz.org/
*
* @package sapphire
* @subpackage tools
*/
class ModelViewer extends Controller {
static $url_handlers = array(
'$Module!' => 'handleModule',
);
protected $module = null;
function handleModule($request) {
return new ModelViewer_Module($request->param('Module'));
}
function init() {
parent::init();
if(!Permission::check("ADMIN")) Security::permissionFailure();
// check for graphviz dependencies
$returnCode = 0;
$output = array();
exec("which neato", $output, $returnCode);
if($returnCode != 0) {
user_error(
'You don\'t seem to have the GraphViz library (http://graphviz.org/) and the "neato" command-line utility available',
E_USER_ERROR
);
}
}
/**
* Model classes
*/
function Models() {
$classes = ClassInfo::subclassesFor('DataObject');
array_shift($classes);
$output = new DataObjectSet();
foreach($classes as $class) {
$output->push(new ModelViewer_Model($class));
}
return $output;
}
/**
* Model classes, grouped by Module
*/
function Modules() {
$classes = ClassInfo::subclassesFor('DataObject');
array_shift($classes);
$modules = array();
foreach($classes as $class) {
$model = new ModelViewer_Model($class);
if(!isset($modules[$model->Module])) $modules[$model->Module] = new DataObjectSet();
$modules[$model->Module]->push($model);
}
ksort($modules);
unset($modules['userforms']);
if($this->module) {
$modules = array($this->module => $modules[$this->module]);
}
$output = new DataObjectSet();
foreach($modules as $moduleName => $models) {
$output->push(new ArrayData(array(
'Link' => 'dev/viewmodel/' . $moduleName,
'Name' => $moduleName,
'Models' => $models,
)));
}
return $output;
}
}
class ModelViewer_Module extends ModelViewer {
static $url_handlers = array(
'graph' => 'graph',
);
/**
* ModelViewer can be optionally constructed to restrict its output to a specific module
*/
function __construct($module = null) {
$this->module = $module;
parent::__construct();
}
function graph() {
SSViewer::set_source_file_comments(false);
$dotContent = $this->renderWith("ModelViewer_dotsrc");
$CLI_dotContent = escapeshellarg($dotContent);
$output= `echo $CLI_dotContent | neato -Tpng:gd &> /dev/stdout`;
if(substr($output,1,3) == 'PNG') header("Content-type: image/png");
else header("Content-type: text/plain");
echo $output;
}
}
/**
* Represents a single model in the model viewer
*/
class ModelViewer_Model extends ViewableData {
protected $className;
function __construct($className) {
$this->className = $className;
}
function getModule() {
global $_CLASS_MANIFEST;
$className = $this->className;
if(($pos = strpos($className,'_')) !== false) $className = substr($className,0,$pos);
if(isset($_CLASS_MANIFEST[$className])) {
if(preg_match('/^'.str_replace('/','\/',preg_quote(BASE_PATH)).'\/([^\/]+)\//', $_CLASS_MANIFEST[$className], $matches)) {
return $matches[1];
}
}
}
function getName() {
return $this->className;
}
function getParentModel() {
$parentClass = get_parent_class($this->className);
if($parentClass != "DataObject") return $parentClass;
}
function Fields() {
$output = new DataObjectSet();
$output->push(new ModelViewer_Field($this,'ID', 'PrimaryKey'));
if(!$this->ParentModel) {
$output->push(new ModelViewer_Field($this,'Created', 'Datetime'));
$output->push(new ModelViewer_Field($this,'LastEdited', 'Datetime'));
}
$db = singleton($this->className)->uninherited('db',true);
if($db) foreach($db as $k => $v) {
$output->push(new ModelViewer_Field($this, $k, $v));
}
return $output;
}
function Relations() {
$output = new DataObjectSet();
foreach(array('has_one','has_many','many_many') as $relType) {
$items = singleton($this->className)->uninherited($relType,true);
if($items) foreach($items as $k => $v) {
$output->push(new ModelViewer_Relation($this, $k, $v, $relType));
}
}
return $output;
}
}
class ModelViewer_Field extends ViewableData {
public $Model, $Name, $Type;
function __construct($model, $name, $type) {
$this->Model = $model;
$this->Name = $name;
$this->Type = $type;
parent::__construct();
}
}
class ModelViewer_Relation extends ViewableData {
public $Model, $Name, $RelationType, $RelatedClass;
function __construct($model, $name, $relatedClass, $relationType) {
$this->Model = $model;
$this->Name = $name;
$this->RelatedClass = $relatedClass;
$this->RelationType = $relationType;
parent::__construct();
}
}
?>