$this->id, 'base_name' => $this->whenLoaded('base', function () { return $this->base?->name; }, ''), 'base_id' => $this->base_id, 'crop_name' => $this->whenLoaded('crop', function (){ return $this->crop?->name; }, ''), 'crop_id' => $this->crop_id, 'time_year' => $this->time_year, 'yield' => $this->yield, 'output' => $this->output, 'cultivated' => $this->cultivated, 'created_by' => $this->whenLoaded('createdBy', function (){ return $this->createdBy?->name; }, ''),//录入人 'created_at' => strtotime($this->created_at) ?? 0,//录入时间 ]; } }