Grails：如何 copy/clone/duplicate 行实例

Question

在 Grails 中，有没有办法使用现有行实例化新行？或者我是否需要遍历属性并以这种方式设置它们？

def original=Musicians.get(id);

//want to start with all the same values as original and then modify
def copy=new Musicians(); 
copy.firstName="Example";
copy.lastName='Musician';

Answer 1

要复制原始属性，您可以使用 properties 属性，如下所示：

def original = Musicians.get(id)
def copy = new Musicians(original.properties)

copy.firstName = 'Example'
copy.lastName = 'Musician'

不需要分号 ;)

Grails：如何 copy/clone/duplicate 行实例

Grails: How to copy/clone/duplicate a row instance

grails

groovy

grails-orm