From: Erik Hollensbe <erik@...>
Date: 2008-11-19T19:29:23+09:00
Subject: Re: "rescue  Postgres::PGError" not working

Mandeep Baruah wrote:
> I am trying to rescue exceptions from a PostgreSQL query (see bellow
> code)
> ---------------------------------------------------
> begin
>   res = @pgconn.exec(querystring) # some query
> rescue Postgres::PGError => e
>   puts "Error code: #{e.err}"
>   puts "Error message: #{e.errstr}"
> end
> ---------------------------------------------------
> (I know that the query I am tring to execute will give an exception)
> But when I try to execute, it give me an error saying:
> "dependencies.rb:493:in `const_missing': uninitialized constant
> UpdateTestlinkDB::Postgres (NameError)"
> 
> Is there a different way to handle exception or, am I missing something?

I'm fairly certain (unless it's changed, then I have some code to push) 
that the class is PGError, not Postgres::PGError.

This would explain your error, as ruby will first search the current 
namespace, then the global namespace, looking for your constant 
(Postgres in this case), and will report it missing.

-Erik
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