dcat-admin框架 筛选某个字段时候,统计总金额

            $grid->header(function ($collection) use($grid) {
                $query = ModelsCostReimbursement::query();
                $searchArr = [];

                // 拿到表格筛选 where 条件数组进行遍历
                $grid->model()->getQueries()->unique()->each(function ($value) use (&$query,&$searchArr) {
                    if (in_array($value['method'], ['paginate', 'get', 'orderBy', 'orderByDesc'], true)) {
                        return;
                    }
                    //存储查询的字段名
                    $searchArr[] = $value['arguments'][0];

                    $query = call_user_func_array([$query, $value['method']], $value['arguments'] ?? []);
                });
                //筛选后 展示 统计数据
                //如果搜索了date,project_id,user_id则统计金额
                foreach(['date','project_id','user_id'] as $item){
                    if (in_array($item, $searchArr)) {
                        // 查出统计数据
                        $data = $query->sum('amount');
                        return Card::make('总额:' . $data);
                    }
                }
            });Copy