when(isset($params['id']) && $params['id'] !== '',function($query) use ($params){ $query->where('id', (int)$params['id']); }) ->when(isset($params['agent_id']) && $params['agent_id'] !== '',function($query) use ($params){ $query->where('agent_id', (int)$params['agent_id']); }) ->when(isset($params['mer_id']) && $params['mer_id'] !== '',function($query) use ($params){ $query->where('mer_id', (int)$params['mer_id']); }) ->when(isset($params['status']) && $params['status'] !== '',function($query) use ($params){ $query->where('status', $params['status']); }) ->when(isset($params['order_id']) && $params['order_id'] !== '',function($query) use ($params){ $query->where('order_id', $params['order_id']); }) ->with([ 'agent', 'mer' => function($query){ $query->field('mer_id,mer_name,mer_avatar'); }, ]) ->order('create_time DESC,id DESC'); } }