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/vendor/ | ||
composer.lock |
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# Array mapping | ||
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The goal of the library is to map two arrays (in and out) with an YAML file config. | ||
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## Install | ||
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WIP, not official lib yet | ||
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```bash | ||
composer require valouleloup/array-mapping | ||
``` | ||
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## Usage | ||
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#### Yaml Mapping | ||
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```yaml | ||
transformer: | ||
mapping: | ||
civilite: | ||
from: 'demandeur.civilite' | ||
to: 'civ' | ||
function: | ||
name: 'buildCivilite' | ||
params: | ||
- 'demandeur.civilite' | ||
nom: | ||
from: 'demandeur.nomUsage' | ||
to: 'nom' | ||
required: true | ||
prenom: | ||
from: 'demandeur.prenom' | ||
to: 'prenom' | ||
required: true | ||
dateNaissance: | ||
from: 'demandeur.dateNaissance' | ||
to: 'dnat' | ||
function: | ||
name: 'convertDate' | ||
params: | ||
- 'demandeur.dateNaissance' | ||
villeNaissance: | ||
from: 'demandeur.naissanceVille' | ||
to: 'villenaiss' | ||
``` | ||
* ` from ` : string, the key's path of the ` in ` array | ||
* ` to ` : string, the key's path of the ` out ` array | ||
* ` function ` : array, the php function to use to transform the data | ||
* ` name ` : string, the function's name | ||
* ` params ` : array, the function's parameters | ||
* ` required ` : boolean, if the key is ` required ` | ||
* WIP ` condition ` : array, the conditions that specify if the key is required or not | ||
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#### Transformer | ||
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Your transformer needs to extends the ` MappingTransformer ` class : | ||
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```php | ||
<?php | ||
namespace Transformer; | ||
use DateTime; | ||
use Valouleloup\ArrayMapping\AbstractMappingTransformer; | ||
use Symfony\Component\Yaml\Yaml; | ||
class MyTransformer extends AbstractMappingTransformer | ||
{ | ||
/** | ||
* {@inheritdoc} | ||
*/ | ||
protected function transform(array $dataBefore) | ||
{ | ||
// TODO use parseFile for SF >= 3.4 | ||
$config = Yaml::parse(file_get_contents(__DIR__ . '/mapping.yml')); | ||
$result = $this->transformFromMapping($config['transformer']['mapping'], $dataBefore); | ||
... | ||
} | ||
/** | ||
* @param $value | ||
* | ||
* @return string | ||
*/ | ||
public function convertDate($value) | ||
{ | ||
$date = new DateTime($value); | ||
return $date->format('d/m/Y'); | ||
} | ||
} | ||
``` | ||
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The ` $result ` variable now contains the new array. |
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{ | ||
"name": "valouleloup/array-mapping", | ||
"type": "library", | ||
"license": "MIT", | ||
"authors": [ | ||
{ | ||
"name": "Valentin Faugeroux", | ||
"email": "[email protected]" | ||
} | ||
], | ||
"autoload": { | ||
"psr-4": { | ||
"Valouleloup\\ArrayMapping\\": "src/" | ||
} | ||
}, | ||
"autoload-dev": { | ||
"psr-4": { | ||
"Valouleloup\\ArrayMapping\\Tests\\": "tests/" | ||
} | ||
}, | ||
"require": { | ||
"php": "^5.6|>=7.0.8", | ||
"symfony/property-access": "^3.4" | ||
}, | ||
"require-dev": { | ||
"phpunit/phpunit": "^5.7" | ||
} | ||
} |
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<?xml version="1.0" encoding="UTF-8"?> | ||
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<phpunit> | ||
<testsuites> | ||
<testsuite name="Valouleloup array-mapping"> | ||
<directory>./tests</directory> | ||
</testsuite> | ||
</testsuites> | ||
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<filter> | ||
<whitelist> | ||
<directory>./src</directory> | ||
</whitelist> | ||
</filter> | ||
</phpunit> |
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<?php | ||
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namespace Valouleloup\ArrayMapping; | ||
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use Symfony\Component\PropertyAccess\PropertyAccess; | ||
use Symfony\Component\PropertyAccess\PropertyAccessor; | ||
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abstract class AbstractMappingTransformer | ||
{ | ||
/** | ||
* @var PropertyAccessor | ||
*/ | ||
protected $accessor; | ||
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public function __construct($accessor = null) | ||
{ | ||
$this->accessor = $accessor ? $accessor : PropertyAccess::createPropertyAccessor(); | ||
} | ||
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/** | ||
* Transform the array given in parameter to an output array | ||
* Method goal: | ||
* - Load transformer config (yaml file) | ||
* - Transform input array to output formatted array | ||
* | ||
* @param array $data | ||
* @return mixed | ||
*/ | ||
abstract protected function transform(array $data); | ||
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/** | ||
* Generate output array by given mapping & input array | ||
* | ||
* @param array $mapping The mapping to use to transform input array | ||
* @param array $data The input array | ||
* @return array The output array | ||
* @throws \Exception | ||
*/ | ||
protected function transformFromMapping(array $mapping, array $data) | ||
{ | ||
$result = []; | ||
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foreach ($mapping as $node) { | ||
// Only transform current node if no condition prevent it | ||
if ($this->areConditionsValidated($node, $data)) { | ||
// Get our node value | ||
$nodeValue = $this->getNodeValue($node, $data); | ||
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// If we didn't get value but field was required, throw Exception | ||
if (isset($node['required']) && true === $node['required'] && null === $nodeValue) { | ||
throw new \Exception('Field ' . $node['from'] . ' required.'); | ||
} | ||
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if (isset($node['dependencies'])) { | ||
$dependenciesExist = true; | ||
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foreach ($node['dependencies'] as $dependency) { | ||
if (null === $this->getValue($result, $mapping[$dependency]['to'])) { | ||
$dependenciesExist = false; | ||
} | ||
} | ||
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if ($dependenciesExist && null === $nodeValue) { | ||
throw new \Exception('Field ' . $node['from'] . ' required if dependencies true.'); | ||
} | ||
} | ||
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// nodeValue was found && acceptable, add value to result array | ||
if (null !== $nodeValue) { | ||
$this->accessor->setValue($result, $this->convertToBrackets($node['to']), $nodeValue); | ||
} | ||
} | ||
} | ||
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return $result; | ||
} | ||
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/** | ||
* Check if a node can be transformed | ||
* | ||
* @param array $node The node to check | ||
* @param array $data The input date to parse | ||
* @return bool True if node is transformable, False if node isn't transformable | ||
*/ | ||
private function areConditionsValidated(array $node, array $data) | ||
{ | ||
// If node doesn't have condition, execute transformation | ||
if (!isset($node['condition'])) { | ||
return true; | ||
} | ||
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// Only transform node if field exists in array to parse | ||
if (isset($node['condition']['exists']) | ||
&& \is_null($this->getValue($data, $node['condition']['exists']))) { | ||
return false; | ||
} | ||
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return true; | ||
} | ||
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/** | ||
* Get the value related to a node | ||
* | ||
* @param array $node | ||
* @param array $data | ||
* | ||
* @return mixed | ||
*/ | ||
private function getNodeValue(array $node, array $data) | ||
{ | ||
//1. Get function value if is set so | ||
//2. Else get raw value is no function is defined | ||
//3. If keyValue is null and a default value is set, return default value | ||
$nodeValue = null; | ||
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if (isset($node['function'])) { | ||
$params = []; | ||
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foreach ($node['function']['params'] as $param) { | ||
$params[] = $this->getValue($data, $param); | ||
} | ||
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$nodeValue = call_user_func_array([$this, $node['function']['name']], $params); | ||
} else { | ||
if (isset($node['from'])) { | ||
$nodeValue = $this->getValue($data, $node['from']); | ||
} | ||
} | ||
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if (null === $nodeValue && isset($node['default'])) { | ||
// If default value is an array, try to get it node value | ||
// Else return default value which is static | ||
if (\is_array($node['default'])) { | ||
$nodeValue = $this->getNodeValue($node['default'], $data); | ||
} else { | ||
$nodeValue = $node['default']; | ||
} | ||
} | ||
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return $nodeValue; | ||
} | ||
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/** | ||
* Get value set in the input array by finding them with key | ||
* | ||
* @param array $data The input array | ||
* @param string $key The key which is the location of the value in the input array | ||
* | ||
* @return mixed|null The related value, if value doesn't exists return null | ||
*/ | ||
private function getValue(array $data, $key) | ||
{ | ||
return $this->accessor->getValue($data, $this->convertToBrackets($key)); | ||
} | ||
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/** | ||
* Convert path separated with dot to path separated with brackets | ||
* ie. path.to.convert will produce [path][to][convert] | ||
* | ||
* @param string $path The path to convert | ||
* @return string the converted path | ||
*/ | ||
private function convertToBrackets($path) | ||
{ | ||
$keys = explode('.', $path); | ||
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$bracketPath = ''; | ||
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foreach ($keys as $key) { | ||
$bracketPath .= '[' . $key . ']'; | ||
} | ||
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return $bracketPath; | ||
} | ||
} |
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