In Playframework, how to validate if username exist in play JSON Reads validation

+1 vote
asked Feb 20, 2016 by nothing (830 points)
I want validation if username exist in JSON Reads Validation, I find verifying() helper, it needs Boolean parameter, And I use slick, I will get Future[Boolean] when query if username exist, But I dont want to rename them to keep my code standard and for

4 Answers

+1 vote
answered Mar 10, 2016 by Gur_Why (780 points)
Best answer
How do i handle it in Play
0 votes
answered Feb 22, 2016 by gurthe (600 points)

Any way to compose form validation to prevent repeated code. But Scala PR validation is also resource intensive.
It only validates amount from price, but not currency.

Further, this question is essentially a duplicate of
commented Feb 24, 2016 by Kuiper (400 points)
You can have a function something like this. Hope this will help you
0 votes
answered Mar 6, 2016 by Pbz_i (750 points)
I have a code example for this problem. Mostly I have followed this tutorial XML - Wikipedia, the free encyclopedia but to no avail
0 votes
answered Mar 7, 2016 by naqone (1,410 points) 1 flag
This is one thing that batch scripting just does not do well
Reading this AJAX and PHP - JavaBeat didn't really help
commented Mar 8, 2016 by cicerelli (1,140 points)
Python actually makes this quite easy. I hope it will help you

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