magento2 add display default value for column on admin grid

Question

I have created a custom module to display the sale product details. The columns are as follow, Product_id, name, quantity and Status. I got the output.

My question is, I need to display completed order details by default but now it's displaying the pending order details by default.

Could anyone give me suggestions to sort it out

Answer 1

Finally, I got the output,

In my xml that defines the grid, I replaced Magento\Backend\Block\Widget\Grid as Test\Custom\Block\Adminhtml\Custom

In my Grid.php

    namespace Test\Custom\Block\Adminhtml\Custom;
    use Magento\Backend\Block\Widget\Grid as WidgetGrid;
    class Grid extends WidgetGrid
    {
        protected function _construct()
        {
            parent::_construct();
            $this->setSaveParametersInSession(true);        
            //for default filter
            if ($this->hasData('default_filter')){
                $this->setDefaultFilter($this->getData('default_filter'));
            }
        }
        protected function _prepareCollection()
        {
            //on clicking reset filter on Grid it will make 'complete' status as default:
            if(!$this->getParam($this->getVarNameFilter(), null)) {
                $this->getCollection()->addFieldToFilter('salesGrid.status', array('eq' => 'complete'));
                $data['status'] = 'complete';           
                $this->_setFilterValues($data);
            }
            parent::_prepareCollection();
        }
    }

Answer 2

You need to modify your collections according to your requirement. Make collections filtered by order status complete.