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<?php |
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namespace SilverShop\Tasks; |
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use SilverShop\Page\Product; |
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use SilverStripe\Dev\BuildTask; |
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use SilverStripe\ORM\DB; |
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class CalculateProductPopularity extends BuildTask |
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{ |
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protected $title = 'Calculate Product Sales Popularity'; |
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protected $description = 'Count up total sales quantites for each product'; |
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private static $number_sold_calculation_type = 'SUM'; //SUM or COUNT |
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public function run($request) |
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{ |
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if ($request->getVar('via') == 'php') { |
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$this->viaphp(); |
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} else { |
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$this->viasql(); |
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} |
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echo 'product sales counts updated'; |
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} |
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/** |
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* Update both live and stage tables, based on the algorithm: |
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* product popularity = sum(1/order_age) * sum(item_quantity) |
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*/ |
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public function viasql() |
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{ |
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foreach (['_Live', ''] as $stage) { |
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$sql = <<<SQL |
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UPDATE "SilverShop_Product$stage" SET "Popularity" = ( |
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SELECT |
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SUM(1 / (DATEDIFF(NOW(),"SilverShop_Order"."Paid")+1)) * SUM("SilverShop_OrderItem"."Quantity") |
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# / DATEDIFF("SiteTree$stage"."Created",NOW()) |
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AS Popularity |
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FROM "SiteTree$stage" |
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INNER JOIN "SilverShop_Product_OrderItem" ON "SiteTree$stage"."ID" = "SilverShop_Product_OrderItem"."ProductID" |
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INNER JOIN "SilverShop_OrderItem" ON "SilverShop_OrderItem"."ID" = "SilverShop_Product_OrderItem"."ID" |
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INNER JOIN "SilverShop_OrderAttribute" ON "SilverShop_OrderItem"."ID" = "SilverShop_OrderAttribute"."ID" |
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INNER JOIN "SilverShop_Order" ON "SilverShop_OrderAttribute"."OrderID" = "SilverShop_Order"."ID" |
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WHERE "SiteTree$stage"."ID" = "SilverShop_Product$stage"."ID" |
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AND "SilverShop_Order"."Paid" IS NOT NULL |
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GROUP BY "SilverShop_Product$stage"."ID" |
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); |
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SQL; |
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DB::query($sql); |
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} |
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} |
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//legacy function for working out popularity |
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public function viaphp() |
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{ |
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$ps = singleton(Product::class); |
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$q = $ps->buildSQL('"SilverShop_Product"."AllowPurchase" = 1'); |
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$select = $q->select; |
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$select['NewPopularity'] = |
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self::config()->number_sold_calculation_type . '("SilverShop_OrderItem"."Quantity") AS "NewPopularity"'; |
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$q->select($select); |
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$q->groupby('"Product"."ID"'); |
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$q->orderby('"NewPopularity" DESC'); |
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$q->leftJoin('SilverShop_Product_OrderItem', '"SilverShop_Product"."ID" = "SilverShop_Product_OrderItem"."ProductID"'); |
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$q->leftJoin('SilverShop_OrderItem', '"SilverShop_Product_OrderItem"."ID" = "SilverShop_OrderItem"."ID"'); |
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$records = $q->execute(); |
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$productssold = $ps->buildDataObjectSet($records, "DataObjectSet", $q, Product::class); |
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//TODO: this could be done faster with an UPDATE query (SQLQuery doesn't support this yet @11/06/2010) |
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foreach ($productssold as $product) { |
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if ($product->NewPopularity != $product->Popularity) { |
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$product->Popularity = $product->NewPopularity; |
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$product->writeToStage('Stage'); |
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$product->publishSingle(); |
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} |
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} |
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} |
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} |
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silvershop /
silvershop-core
