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<?php |
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/** |
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* This build task helps to migrate DMS data structures from DMS 1.x to 2.x which introduces document sets. |
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* |
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* See the "document-sets.md" migration guide for more information and use examples. |
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*/ |
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class MigrateToDocumentSetsTask extends BuildTask |
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{ |
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protected $title = 'DMS 2.0 Migration Tool'; |
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protected $description = 'Migration tool for upgrading from DMS 1.x to 2.x. Add "action=create-default-document-set" to create a default set. "reassign-documents" to reassign legacy document relations. "dryrun=1" to show changes without writing.'; |
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/** |
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* The valid actions that this task can perform (and the method that does them as the key) |
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* @var array |
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*/ |
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protected $validActions = array( |
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'createDefaultSet' => 'create-default-document-set', |
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'reassignDocuments' => 'reassign-documents' |
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); |
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/** |
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* @var SS_HTTPRequest |
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*/ |
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protected $request; |
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/** |
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* Holds number of pages/sets/documents processed for output at the end. Example: |
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* |
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* <code> |
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* array( |
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* 'total-pages' => 0, |
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* 'pages-updated' => 0 |
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* ) |
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* </code> |
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* |
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* The individual action methods will update these metrics as required |
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* |
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* @var array |
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*/ |
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protected $results = array(); |
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public function run($request) |
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{ |
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$this->request = $request; |
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$action = $request->getVar('action'); |
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if (!in_array($action, $this->validActions)) { |
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$this->output( |
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'Error! Specified action is not valid. Valid actions are: ' . implode(', ', $this->validActions) |
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); |
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$this->output('You can add "dryrun=1" to enable dryrun mode where no changes will be written to the DB.'); |
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return; |
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} |
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$this->outputHeader(); |
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$action = array_search($action, $this->validActions); |
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$this->$action(); |
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$this->outputResults(); |
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} |
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/** |
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* Returns whether dryrun mode is enabled ("dryrun=1") |
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* |
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* @return bool |
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*/ |
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public function isDryrun() |
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{ |
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return (bool) $this->request->getVar('dryrun') == 1; |
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} |
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/** |
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* Creates a default document set for any valid page that doesn't have one |
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* |
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* @return $this |
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*/ |
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protected function createDefaultSet() |
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{ |
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$pages = SiteTree::get(); |
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foreach ($pages as $page) { |
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// Only handle valid page types |
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if (!$page->config()->get('documents_enabled')) { |
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$this->addResult('Skipped: documents disabled'); |
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continue; |
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} |
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if ($page->DocumentSets()->count()) { |
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// Don't add a set if it already has one |
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$this->addResult('Skipped: already has a set'); |
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continue; |
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} |
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$this->addDefaultDocumentSet($page); |
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$this->addResult('Default document set added'); |
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} |
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return $this; |
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} |
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/** |
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* Reassign documents to the default document set, where they'd previously have been assigned to pages |
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* |
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* @return $this |
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*/ |
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protected function reassignDocuments() |
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{ |
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$countCheck = SQLSelect::create('*', 'DMSDocument_Pages'); |
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if (!$countCheck->count()) { |
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$this->output('There was no data to migrate. Finishing.'); |
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return $this; |
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} |
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$query = SQLSelect::create(array('DMSDocumentID', 'SiteTreeID'), 'DMSDocument_Pages'); |
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$result = $query->execute(); |
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foreach ($result as $row) { |
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$document = DMSDocument::get()->byId($row['DMSDocumentID']); |
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if (!$document) { |
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$this->addResult('Skipped: document does not exist'); |
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continue; |
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} |
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$page = SiteTree::get()->byId($row['SiteTreeID']); |
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if (!$page) { |
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$this->addResult('Skipped: page does not exist'); |
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continue; |
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} |
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// Don't try and process pages that don't have a document set. This should be created by the first |
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// action step in this build task, so shouldn't occur if run in correct order. |
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if (!$page->DocumentSets()->count()) { |
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$this->addResult('Skipped: no default document set'); |
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continue; |
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} |
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$this->addDocumentToSet($document, $page->DocumentSets()->first()); |
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$this->addResult('Reassigned to document set'); |
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} |
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return $this; |
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} |
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/** |
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* Create a "default" document set and add it to the given Page via the ORM relationship added by |
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* {@link DMSSiteTreeExtension} |
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* |
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* @param SiteTree $page |
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* @return $this |
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*/ |
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protected function addDefaultDocumentSet(SiteTree $page) |
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{ |
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if ($this->isDryrun()) { |
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return $this; |
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} |
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$set = DMSDocumentSet::create(); |
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$set->Title = 'Default'; |
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$set->write(); |
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$page->DocumentSets()->add($set); |
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return $this; |
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} |
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/** |
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* Add the given document to the given document set |
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* |
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* @param DMSDocument $document |
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* @param DMSDocumentSet $set |
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* @return $this |
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*/ |
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protected function addDocumentToSet(DMSDocument $document, DMSDocumentSet $set) |
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{ |
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if ($this->isDryrun()) { |
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return $this; |
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} |
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$set->Documents()->add($document); |
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return $this; |
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} |
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/** |
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* Output a header info line |
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* |
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* @return $this |
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*/ |
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protected function outputHeader() |
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{ |
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$this->output('Migrating DMS data to 2.x for document sets'); |
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if ($this->isDryrun()) { |
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$this->output('NOTE: Dryrun mode enabled. No changes will be written.'); |
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} |
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return $this; |
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} |
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/** |
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* Output a "finished" notice and the results of what was done |
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* |
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* @return $this |
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*/ |
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protected function outputResults() |
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{ |
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$this->output(); |
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$this->output('Finished:'); |
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foreach ($this->results as $metric => $count) { |
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$this->output('+ ' . $metric . ': ' . $count); |
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} |
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return $this; |
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} |
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/** |
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* Add the $increment to the result key identified by $key |
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* |
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* @param string $key |
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* @param int $increment |
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* @return $this |
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*/ |
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protected function addResult($key, $increment = 1) |
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{ |
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if (!array_key_exists($key, $this->results)) { |
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$this->results[$key] = 0; |
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} |
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$this->results[$key] += $increment; |
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return $this; |
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} |
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/** |
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* Outputs a message formatted either for CLI or browser output |
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* |
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* @param string $message |
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* @return $this |
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*/ |
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public function output($message = '') |
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{ |
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if ($this->isCli()) { |
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echo $message, PHP_EOL; |
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} else { |
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echo $message . '<br />'; |
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} |
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return $this; |
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} |
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/** |
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* Returns whether the task is called via CLI or not |
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* |
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* @return bool |
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*/ |
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protected function isCli() |
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{ |
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return Director::is_cli(); |
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} |
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} |
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This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass.
Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type.