Can't get data just saved in database in Laravel 5.1 - laravel-5.1

Question

I successfully save data in the database. However, the data can't be found after saving.
In the JSON，the key object's value is an empty array.
My database schema:
CREATE TABLE IF NOT EXISTS `bigdata_db`.`objects` (
`object_id` CHAR(34) NOT NULL,
`object_lt_x` FLOAT NOT NULL,
`object_lt_y` FLOAT NOT NULL,
`object_width` FLOAT NOT NULL,
`object_height` FLOAT NOT NULL,
`image_id` CHAR(34) NOT NULL,
`type_id` CHAR(34) NOT NULL,
PRIMARY KEY (`object_id`),
INDEX `fk_objects_images1_idx` (`image_id` ASC),
INDEX `fk_objects_types1_idx` (`type_id` ASC),
CONSTRAINT `fk_objects_images1`
FOREIGN KEY (`image_id`)
REFERENCES `bigdata_db`.`images` (`image_id`)
ON DELETE CASCADE
ON UPDATE CASCADE,
CONSTRAINT `fk_objects_types1`
FOREIGN KEY (`type_id`)
REFERENCES `bigdata_db`.`types` (`type_id`)
ON DELETE CASCADE
ON UPDATE CASCADE);
My object model:
protected $table = 'objects';
public $timestamps = false;
protected $primaryKey = 'object_id';
public $incrementing = false;
protected $fillable = ['object_id','object_lt_x', 'object_lt_y', 'object_width', 'object_height', 'image_id', 'type_id'];
Save the data to database
$obj = new Object;
$obj->object_id = $objectId;
$obj->object_lt_x = $objX;
$obj->object_lt_y = $objY;
$obj->object_width = $objWidth;
$obj->object_height = $objHeight;
$obj->image_id = $imageId;
$obj->type_id = $typeId;
if ($obj->save()) {
$obj_id = $obj->object_id;
$object = DB::table('objects')->where('object_id',$objectId)->get();
$success = array('status' => 1,'message' => $type_name.'标记成功！','obj_id' => $obj_id,'object' => $object);
return response()->json($success);
} else {
$error = array('status' => 0,'message' => $type_name.'标记失败！');
return response()->json($error);
}
The result is:
Object {status: 1, message: "眼睛标记成功！", obj_id: "A7313004-3B7D-56F2-602F-FC81D4A8F04F", object: Array[0]}

Answer 1

Looks to me that you have a conditional for $obj->save() but you never actually called $obj->save(); to save the Entry.
$obj = new Object;
$obj->object_id = $objectId;
$obj->object_lt_x = $objX;
$obj->object_lt_y = $objY;
$obj->object_width = $objWidth;
$obj->object_height = $objHeight;
$obj->image_id = $imageId;
$obj->type_id = $typeId;
$obj->save();
if ($obj->save()) {
$obj_id = $obj->object_id;
$object = DB::table('objects')->where('object_id',$objectId)->get();
$success = array('status' => 1,'message' => $type_name.'标记成功！','obj_id' => $obj_id,'object' => $object);
return response()->json($success);
} else {
$error = array('status' => 0,'message' => $type_name.'标记失败！');
return response()->json($error);
}