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<?php |
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namespace Brendt\Stitcher\Adapter; |
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use Pageon\Html\Meta\Meta; |
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use Brendt\Stitcher\Exception\ConfigurationException; |
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use Brendt\Stitcher\Exception\IdFieldNotFoundException; |
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use Brendt\Stitcher\Exception\VariableNotFoundException; |
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use Brendt\Stitcher\Factory\AdapterFactory; |
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use Brendt\Stitcher\factory\ParserFactory; |
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use Brendt\Stitcher\Site\Meta\MetaCompiler; |
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use Brendt\Stitcher\Site\Page; |
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/** |
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* The CollectionAdapter takes a page with a collection of entries, and generates a detail page for each entry in the |
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* collection. |
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* |
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* Sample configuration: |
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* |
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* /examples/{id}: |
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* template: examples/detail |
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* data: |
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* variableName: collection.yml |
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* adapters: |
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* variableName: |
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* variable: example |
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* field: id |
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*/ |
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class CollectionAdapter extends AbstractAdapter |
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{ |
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private $metaCompiler; |
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private $variable = null; |
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private $field = null; |
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private $entries = []; |
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public function __construct(ParserFactory $parserFactory, MetaCompiler $metaCompiler) { |
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parent::__construct($parserFactory); |
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$this->metaCompiler = $metaCompiler; |
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} |
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public function transformPage(Page $page, $filter = null) : array { |
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$this->loadConfig($page); |
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$result = []; |
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while ($entry = current($this->entries)) { |
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if (isset($entry[$this->field]) && (!$filter || $entry[$this->field] === $filter)) { |
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$entryPage = $this->createEntryPage($page, $entry); |
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$result[$entryPage->getId()] = $entryPage; |
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} |
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next($this->entries); |
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} |
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return $result; |
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} |
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private function createEntryPage(Page $page, array $entry) : Page { |
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$url = str_replace('{' . $this->field . '}', $entry[$this->field], $page->getId()); |
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$entryPage = Page::copy($page); |
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$entryPageMeta = $entryPage->getMeta(); |
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$this->metaCompiler->setDefaultMeta($entryPageMeta); |
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foreach ($entry as $entryVariableName => $entryVariableValue) { |
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$this->metaCompiler->compilePageVariable($entryPage, $entryVariableName, $entryVariableValue); |
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} |
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$entryPage |
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->removeAdapter(AdapterFactory::COLLECTION_ADAPTER) |
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->setVariableValue($this->variable, $entry) |
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->setVariableIsParsed($this->variable) |
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->setId($url); |
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$this->parseBrowseData($entryPage); |
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return $entryPage; |
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} |
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private function parseBrowseData(Page $entryPage) { |
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if ($entryPage->getVariable('browse')) { |
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return; |
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} |
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$prev = prev($this->entries); |
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if (!$prev) { |
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reset($this->entries); |
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} else { |
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next($this->entries); |
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} |
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$next = next($this->entries); |
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$entryPage->setVariableValue('browse', [ |
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'prev' => $prev, |
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'next' => $next, |
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])->setVariableIsParsed('browse'); |
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prev($this->entries); |
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} |
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protected function loadConfig(Page $page) { |
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$config = $page->getAdapterConfig(AdapterFactory::COLLECTION_ADAPTER); |
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if (!isset($config['field'], $config['variable'])) { |
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throw new ConfigurationException('Both the configuration entry `field` and `variable` are required when using the Collection adapter.'); |
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} |
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$this->variable = $config['variable']; |
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if (!$page->getVariable($this->variable)) { |
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throw new VariableNotFoundException("Variable \"{$this->variable}\" was not set as a data variable for page \"{$page->getId()}\""); |
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} |
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$this->field = $config['field']; |
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if (strpos($page->getId(), '{' . $this->field . '}') === false) { |
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throw new IdFieldNotFoundException("The field \"{{$this->field}}\" was not found in the URL \"{$page->getId()}\""); |
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} |
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$this->entries = (array) $this->getData($page->getVariable($this->variable)); |
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reset($this->entries); |
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} |
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} |
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