> Of course PostgreSQL will throw back an error if I tried to insert or
> update data that will make the check constraint untrue, which is as it
> should be. Is there any way to use this feedback from Postgres instead
> of running my own checks in PHP, and still provide useful feedback to
> the user (rather than the naked PostgreSQL error code)?
I am right now also looking how to get a feedback from a postgrsql-check back to php.
I thought about using named constraints:
CREATE TABLE test (
id SERIAL,
[whatever fields you need]
CONSTRAINT "!!!#Please check XYZ in the formular#" CHECK ([whatever you like to test])
);
Next, I would check in php if an error occured in the sql-query, if the error includes "!!!" in the error message from
postgresqlI would display the formular again with the values already entered and I would display as a feedback to the
userthe string between the two "##":
Please check XYZ in the formular
One drawback is of course that it will only give feedback from one error at a time.
greetings,
Daniel
--
Retrovirology Laboratory Luxembourg
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