How do Grails Controller action arguments work when the arg is a Domain class instance?

[Matt Lachman]

Hi Grails Community,

It's been several years since my last post in here. Does anyone have insight into how Domain objects as Controller action arguments are data-bound? I posted this on SO too, with a little more detail: https://stackoverflow.com/questions/46532091/grails-3-3-1-controller-action-with-domain-object-argument-how-is-data-bound

Any help would be great. Eventually I would like to implement a editIfExistsElseCreate type action, so knowing how this works would be ideal.

Matt Lachman

[Jeff Scott Brown]

The default implementation already does an editIfExistsElseCreate kind
of thing. This is described under “Using Command Objects” at
http://docs.grails.org/latest/guide/theWebLayer.html#commandObjects.

I also left an answer at StackOverflow which shows some pseudocode which
describes a lot of what is going on.




JSB
--
Jeff Scott Brown
OCI Grails Practice Lead
Principal Software Engineer

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Find The Cause ~ Find The Cure
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[Matt Lachman]

Thanks for the link and the SO answer. That was the information I was having a hard time finding yesterday.

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