Mercurial > urweb
view tests/tryDml.ur @ 1552:c3b5cf5c2f98
Gentle handling of back-button returns to pages with stale message-passing credentials
author | Adam Chlipala <adam@chlipala.net> |
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date | Sun, 28 Aug 2011 17:16:54 -0400 |
parents | 929981850d9d |
children |
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table t : {Id : int} PRIMARY KEY Id fun doStuff () = dml (INSERT INTO t (Id) VALUES (0)); o1 <- tryDml (INSERT INTO t (Id) VALUES (0)); dml (INSERT INTO t (Id) VALUES (1)); o2 <- tryDml (INSERT INTO t (Id) VALUES (2)); dml (INSERT INTO t (Id) VALUES (3)); o3 <- tryDml (INSERT INTO t (Id) VALUES (3)); return <xml>{[o1]}; {[o2]}; {[o3]}</xml> fun main () = return <xml><body> <form> <submit action={doStuff}/> </form> </body></xml>