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Check if available before save

 
Gil Carvalho
Ranch Hand
Posts: 79
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Hi

I need some help
I would like to check if room is available before the user save it.

This is my code


And this is my layout

But before that i would like to kown if it isn't already taken like when i register in a website and the username is checked if not in use..any help?

Thanks

 
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