README

postcode-api-bundle

A Symfony 4 bundle to access Dutch postcode API at Postcode API (postcodeapi.nu). Creates a PostcodeModel object based on postcode, house number & number extra combination.

Characteristics/Requirements

Search based on postcode, house number AND house number extra. Note that some combinations of postcode and house number require a house number extra and without this extra value the address does NOT EXIST:

• ('2011XA', 20, '') is not a valid combination. For this combination of postcode and house number, extra must be 'A', 'RD' or 'ZW'.
• For the values ('2011XA', 20, '') the bundle will return an InvalidNumberExtraException with the following message: "House number extra must be (A, RD, ZW) for this combination of postcode and house number."

Installation

1. Download via composer.
2. Enable bundle by adding class reference to config/bundles.php (if composer did not do that for you).
3. Create yaml configuration config/packages/hurnell_postcode_api.yaml with reference to your api_key.

1 - Download via composer

composer require hurnell/postcode-api-bundle:*

2 - Enable bundle

# config/bundles.php

Hurnell\PostcodeApiBundle\HurnellPostcodeApiBundle::class => ['all' => true],

3 - Configure with API key

# config/packages/hurnell_postcode_api.yaml

hurnell_postcode_api:
    api_key: 'your_api_key'

Usage

Autowiring is enabled by default so in a controller action (or constructor of other classes)

<?php

use Hurnell\PostcodeApiBundle\Service\PostcodeApiClient;
// use Exception classes

class MyController extends AbstractController {
    
    public function getPostcodeAction(PostcodeApiClient $client){
        $form = $this->createForm(PostcodeFormType::class);
        
        try {
            $postcodeModel = $client
                ->makeRequest(
                    '2011XC',
                     20,
                    'RD'
                )
                ->populatePostcodeModel();
            $postcodeModel->getStreet();       // Doelstraat
            $postcodeModel->getCity();         // Haarlem
            // $postcodeModel-> get etc etc
            // json response
            return $this->json($postcodeModel->toArray());
        } catch (InvalidApiResponseException|InvalidPostcodeException $e) {
            // handle exception
        } catch (InvalidHouseNumberException $e) {
            // handle exception
            $form->get('number')->addError(new FormError($e->getMessage()));
        } catch (InvalidNumberExtraException $e) {
            // handle exception
            $postcodeModel = $client->populatePostcodeModelWithoutExtra();
            
            return $this->json(
                array_merge(
                    $postcodeModel->toArray(),
                    ['warning'=>$e->getMessage()]
                )
            );
        }
    }
}

Handling InvalidNumberExtraException

Note that an invalid number extra value is not critical. Furthermore the api is not flawless; there are omissions for house number extra.

The method populatePostcodeModelWithoutExtra exists for these situations:

try {
    $postcodeModel = $client
        ->makeRequest(
            '2011XC',
             20,
            'RD'
        )
        ->populatePostcodeModel();
         // ...
 } catch (InvalidNumberExtraException $e) {
 
    $postcodeModel = $client->populatePostcodeModelWithoutExtra();
    
    return $this->json(
        array_merge(
            $postcodeModel->toArray(),
            ['warning'=>$e->getMessage()]
        )
    );
}