# Before\_invocation by block or method

**URL:** <https://www.ruby-forum.com/t/before-invocation-by-block-or-method/112489>\
**Category:** Rails\
**Created:** [August 20, 2007, 4:26am UTC](https://www.ruby-forum.com/t/before-invocation-by-block-or-method/112489 "2007-08-20T04:26:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jack\_archer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/3e96dc/32.png) [@jack\_archer](https://www.ruby-forum.com/u/jack_archer)\
**Post date:** [August 20, 2007, 4:26am UTC](https://www.ruby-forum.com/t/before-invocation-by-block-or-method/112489/1 "2007-08-20T04:26:54Z")

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Anyone can tell me the difference of using before\_invocation’s block  
format and method format?  
I remember I see it somewhere but I can not find it now

Thanks!  
Jack