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<?php
/**
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since 0.1.0
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Bake\Utility\Model;
use Cake\ORM\Table;
use Cake\Utility\Inflector;
use Exception;
/**
* Utility class to filter Model Table associations
*
*/
class AssociationFilter
{
/**
* Detect existing belongsToMany associations and cleanup the hasMany aliases based on existing
* belongsToMany associations provided
*
* @param \Cake\ORM\Table $table Table
* @param array $aliases array of aliases
* @return array $aliases
*/
public function filterHasManyAssociationsAliases(Table $table, array $aliases)
{
$belongsToManyJunctionsAliases = $this->belongsToManyJunctionAliases($table);
return array_values(array_diff($aliases, $belongsToManyJunctionsAliases));
}
/**
* Get the array of junction aliases for all the BelongsToMany associations
*
* @param Table $table Table
* @return array junction aliases of all the BelongsToMany associations
*/
public function belongsToManyJunctionAliases(Table $table)
{
$extractor = function ($val) {
return $val->junction()->getAlias();
};
return array_map($extractor, $table->associations()->getByType('BelongsToMany'));
}
/**
* Returns filtered associations for controllers models. HasMany association are filtered if
* already existing in BelongsToMany
*
* @param Table $model The model to build associations for.
* @return array associations
*/
public function filterAssociations(Table $model)
{
$belongsToManyJunctionsAliases = $this->belongsToManyJunctionAliases($model);
$keys = ['BelongsTo', 'HasOne', 'HasMany', 'BelongsToMany'];
$associations = [];
foreach ($keys as $type) {
foreach ($model->associations()->getByType($type) as $assoc) {
$target = $assoc->getTarget();
$assocName = $assoc->getName();
$alias = $target->getAlias();
//filter existing HasMany
if ($type === 'HasMany' && in_array($alias, $belongsToManyJunctionsAliases)) {
continue;
}
$targetClass = get_class($target);
list(, $className) = namespaceSplit($targetClass);
$navLink = true;
$modelClass = get_class($model);
if ($modelClass !== Table::class && $targetClass === $modelClass) {
$navLink = false;
}
$className = preg_replace('/(.*)Table$/', '\1', $className);
if ($className === '') {
$className = $alias;
}
try {
$associations[$type][$assocName] = [
'property' => $assoc->getProperty(),
'variable' => Inflector::variable($assocName),
'primaryKey' => (array)$target->getPrimaryKey(),
'displayField' => $target->getDisplayField(),
'foreignKey' => $assoc->getForeignKey(),
'alias' => $alias,
'controller' => $className,
'fields' => $target->getSchema()->columns(),
'navLink' => $navLink,
];
} catch (Exception $e) {
// Do nothing it could be a bogus association name.
}
}
}
return $associations;
}
}