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<?php |
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namespace SilverStripe\Blog\Tasks; |
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use SilverStripe\Blog\Model\BlogCategory; |
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use SilverStripe\Blog\Model\BlogTag; |
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use SilverStripe\Control\Director; |
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use SilverStripe\Core\Convert; |
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use SilverStripe\Dev\BuildTask; |
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use SilverStripe\ORM\DataObject; |
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use SilverStripe\ORM\DB; |
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use SilverStripe\ORM\Queries\SQLSelect; |
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use SilverStripe\View\HTML; |
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class FixBlogDuplicatesTask extends BuildTask |
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{ |
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private static $segment = 'FixBlogDuplicatesTask'; |
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protected $title = 'Fix blog duplicate categories / tags'; |
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protected $description = 'Merge categories and tags with the same title'; |
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public function run($request) |
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{ |
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$this->dedupe(BlogTag::class, 'BlogPost_Tags', 'BlogTagID'); |
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$this->dedupe(BlogCategory::class, 'BlogPost_Categories', 'BlogCategoryID'); |
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} |
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/** |
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* Log message to console / page |
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* |
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* @param string $message |
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*/ |
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protected function message($message) |
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{ |
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if (Director::is_cli()) { |
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echo "{$message}\n"; |
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} else { |
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echo HTML::createTag('p', [], Convert::raw2xml($message)); |
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} |
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} |
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/** |
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* Progress used for CLI output |
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* |
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* @var int |
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*/ |
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protected $printedDots = 0; |
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/** |
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* Render progress dots (20 dots per column) |
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* |
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* @param $current |
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* @param int $total |
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* @param string $character |
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*/ |
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protected function progress($current, $total = 0, $character = '.') |
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{ |
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if (!Director::is_cli()) { |
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return; |
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} |
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while ($this->printedDots < $current) { |
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echo $character; |
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$this->printedDots++; |
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if ($this->printedDots % 80 === 0) { |
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if ($total) { |
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$len = strlen($total); |
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echo str_pad("{$this->printedDots}/{$total}", $len * 2 + 2, ' ', STR_PAD_LEFT); |
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} |
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echo "\n"; |
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} |
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} |
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} |
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/** |
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* Deduplicate the given class |
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* |
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* @param string $class Class name to dedupe |
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* @param string $mappingTable Table name mapping |
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* @param string $relationField Name of foreign key relation field on mapping table |
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*/ |
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protected function dedupe($class, $mappingTable, $relationField) |
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{ |
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$this->printedDots = 0; |
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// Find all duplicates |
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$itemTable = DataObject::getSchema()->tableName($class); |
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$duplicates = SQLSelect::create() |
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->setSelect([ |
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'Title' => '"Title"', |
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'Count' => 'COUNT(*)', |
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'UseID' => 'MIN("ID")', |
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]) |
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->setFrom($itemTable) |
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->setGroupBy('"Title"') |
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->setHaving('"Count" > 1'); |
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$count = $duplicates->count(); |
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$this->message("Found {$count} items with duplicates for type {$class}"); |
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if (!$count) { |
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return; |
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} |
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$done = 0; |
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foreach ($duplicates->execute() as $duplicate) { |
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$title = $duplicate['Title']; |
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$id = $duplicate['UseID']; |
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DB::prepared_query( |
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<<<SQL |
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UPDATE "{$mappingTable}" |
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INNER JOIN "{$itemTable}" ON "{$mappingTable}"."{$relationField}" = "{$itemTable}"."ID" |
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SET "{$mappingTable}"."{$relationField}" = ? |
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WHERE "{$itemTable}"."Title" = ? |
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SQL |
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, |
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[$id, $title] |
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); |
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// Delete duplicates |
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$duplicateItems = DataObject::get($class)->filter([ |
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'Title' => $title, |
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'ID:not' => $id, |
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]); |
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/** @var DataObject $duplicateItem */ |
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foreach ($duplicateItems as $duplicateItem) { |
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$duplicateItem->delete(); |
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} |
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// Update progress bar |
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$done++; |
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$this->progress($done, $count); |
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} |
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$this->progress(""); |
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$this->progress("Completed cleaning duplicates for {$class}"); |
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} |
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} |
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silverstripe /
silverstripe-blog
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