How to define where condition in resource model function for specific value? magento2

Question

How to define condition in resource model function , i have a function for sales reporting , here it is fetching records from defined columns as given below , i want to add condition here for status column to fetch only those status which is equals to **'closed' in my db row** , is that possible to define here ?

public function applyBaseFilters($collection)
    {
        $collection->getSelect()
            ->reset(\Zend_Db_Select::COLUMNS)
            ->columns([
                'period' =>'DAYNAME(created_at)',
                'total_orders' => 'COUNT(entity_id)',
                'total_items' => 'SUM(total_item_count)',
                'subtotal' => 'SUM(base_subtotal)',
                'tax' => 'SUM(base_tax_amount)',
                'status' => 'status',
                'shipping' => 'SUM(base_shipping_amount)',
                'discounts' => 'SUM(base_discount_amount)',
                'total' => 'SUM(base_grand_total)',
                'invoiced' => 'SUM(base_total_invoiced)',
                'refunded' => 'SUM(base_total_refunded)',
                'entity_id' => 'CONCAT(entity_id,\''.$this->createUniqueEntity().'\')'
            ])
        ;
    }

File location is (\Magento\Sales\Model\ResourceModel\Order\Collection)

Answer 1

Try adding ->where("'status' = 'closed'") as follows

$collection->getSelect()
            ->reset(\Zend_Db_Select::COLUMNS)
            ->where("'status' = 'closed'")
            ->columns([
                'period' =>'DAYNAME(created_at)',
                'total_orders' => 'COUNT(entity_id)',
                'total_items' => 'SUM(total_item_count)',
                'subtotal' => 'SUM(base_subtotal)',
                'tax' => 'SUM(base_tax_amount)',
                'status' => 'status',
                'shipping' => 'SUM(base_shipping_amount)',
                'discounts' => 'SUM(base_discount_amount)',
                'total' => 'SUM(base_grand_total)',
                'invoiced' => 'SUM(base_total_invoiced)',
                'refunded' => 'SUM(base_total_refunded)',
                'entity_id' => 'CONCAT(entity_id,\''.$this->createUniqueEntity().'\')'
            ])