From: Michael Fuhr <mike@fuhr.org>
To: CSN <cool_screen_name90001@yahoo.com>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: ruby/postgres - getting assoc array of rows?
Date: Sun, 20 Nov 2005 08:56:14 -0700
Message-ID: <20051120155613.GB38669@winnie.fuhr.org> (raw)
In-Reply-To: <20051120103145.96545.qmail@web52901.mail.yahoo.com>
References: <20051120053247.GA31157@winnie.fuhr.org>
<20051120103145.96545.qmail@web52901.mail.yahoo.com>
On Sun, Nov 20, 2005 at 02:31:45AM -0800, CSN wrote:
> I tried:
> puts "by name: #{row['id']} #{row['name']}"
>
> but it exits with:
> pg.rb:16:in `[]': can't convert String into Integer (TypeError)
What versions of Ruby and ruby-postgres are you using? Did you use
exactly the code I posted or did you do something different? The
only way to get a PGrow object (other than building it yourself)
is from PGresult#each or some method that calls it, so this won't
work:
conn = PGconn.new('dbname=test')
result = conn.exec('SELECT 1 AS x')
row = result[0] # returns an Array
puts row['x'] # raises TypeError
but this does work:
row = result.to_a[0] # returns a PGrow
puts row['x']
I'm not sure if the PGrow behavior is version-specific. I don't
see it mentioned in the ruby-postgres ChangeLog, so I'd have to dig
a little more to find out.
--
Michael Fuhr
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-interfaces@postgresql.org
Cc: mike@fuhr.org, cool_screen_name90001@yahoo.com
Subject: Re: ruby/postgres - getting assoc array of rows?
In-Reply-To: <20051120155613.GB38669@winnie.fuhr.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox