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<?php |
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namespace Trucker\Finders\Conditions; |
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use Guzzle\Http\Message\Request; |
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use Illuminate\Container\Container; |
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use Trucker\Facades\Config; |
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/** |
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* Class to manage how sorting requirements for results returned by |
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* a request, where the directives are passed as HTTP GET parameters with |
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* particular parameter names (defined in the config). |
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* The resulting GET params might be something like:. |
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* |
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* <code> |
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* order_by=someProperty |
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* order_dir=ASC |
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* </code> |
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*/ |
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class GetParamsResultOrder implements QueryResultOrderInterface |
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{ |
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/** |
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* The IoC Container. |
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* |
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* @var Container |
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*/ |
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protected $app; |
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/** |
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* Var to hold the order by field |
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* that the results shoudl be sorted on. |
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* |
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* @var string |
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*/ |
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protected $orderByField; |
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/** |
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* Var to hold the order direction |
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* for results to be returned. |
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* |
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* @var string |
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*/ |
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protected $orderDirection; |
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/** |
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* Constructor, likely never called in implementation |
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* but rather through the service provider. |
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* |
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* @param Container $app |
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*/ |
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public function __construct(Container $app) |
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{ |
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$this->app = $app; |
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} |
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/** |
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* Function to create a new instance that should |
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* be setup with the IoC Container etc. |
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* |
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* @return GetParamsResultOrder |
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*/ |
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public function newInstance() |
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{ |
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return new static($this->app); |
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} |
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/** |
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* Function to set the property which the results |
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* should be ordered by. |
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* |
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* @param string $propertyName |
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*/ |
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public function setOrderByField($propertyName) |
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{ |
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$this->orderByField = $propertyName; |
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} |
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/** |
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* Function to set the direction which the results |
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* should be sorted by, ascending, descending. |
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* |
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* @param string $direction |
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* |
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* @throws \Exception |
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*/ |
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public function setOrderDirection($direction) |
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{ |
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if ($direction != $this->getOrderDirectionAscending() && |
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$direction != $this->getOrderDirectionDescending() |
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) { |
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throw new \Exception("Invalid order direction: {$direction}"); |
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} |
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$this->orderDirection = $direction; |
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} |
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/** |
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* Getter function to return the string that represents |
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* the ascending sort direction. |
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* |
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* @return string |
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*/ |
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public function getOrderDirectionAscending() |
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{ |
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return Config::get('result_order.get_params.order_dir_ascending'); |
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} |
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/** |
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* Getter function to return the string that represents |
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* the descending sort direction. |
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* |
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* @return string |
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*/ |
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public function getOrderDirectionDescending() |
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{ |
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return Config::get('result_order.get_params.order_dir_descending'); |
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} |
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/** |
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* Function to add all the directives that have been |
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* given to the class to a given request object. |
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* |
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* @param Request $request Request passed by reference |
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*/ |
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public function addToRequest(Request $request) |
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{ |
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$query = $request->getQuery(); |
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if (isset($this->orderByField)) { |
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$query->add( |
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Config::get('result_order.get_params.order_by'), |
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$this->orderByField |
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); |
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} |
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if (isset($this->orderDirection)) { |
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$query->add( |
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Config::get('result_order.get_params.order_dir'), |
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$this->orderDirection |
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); |
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} |
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} |
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/** |
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* Function to convert the directives represented in this class |
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* to an array, this is useful for testing. |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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$order_by = Config::get('result_order.get_params.order_by'); |
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$order_dir = Config::get('result_order.get_params.order_dir'); |
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$params = []; |
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$params[$order_by] = $this->orderByField; |
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$params[$order_dir] = $this->orderDirection; |
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return $params; |
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} |
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/** |
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* Function to convert the directives represented in this class |
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* to a querystring, this is useful for testing. |
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* |
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* @return string |
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*/ |
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public function toQueryString() |
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{ |
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return http_build_query($this->toArray()); |
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} |
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} |
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In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: