On Sunday, April 8, 2018 at 5:05:39 PM UTC-7, Greg Gilbert wrote:
>
> Hey,
>
> Following up on my last message (which I closed myself), I'm looking to
> create a class that extends Sequel::Model and uses the schema in a
> connection.
>
> Here's an example:
>
> MyDB = Sequel.connect(
> adapter: 'postgres',
> host: ENV['MYDB_HOST'],
> port: ENV['MYDB_PORT'],
> database: ENV['MYDB_DATABASE'],
> user: ENV['MYDB_USERNAME'],
> password: ENV['MYDB_PASSWORD']
> )
>
> Then, when trying to define the class using that connection:
>
> class Account < Sequel::Model(MyDB[:foo][:account])
>
> This doesn't work. This does, however:
>
> class Account < Sequel::Model(Sequel[:foo][:account])
>
> It seems dangerous to not specify the connection to use. Is there a way to
> do this to ensure that the data is correct?
>
You first example doesn't work because ,MyDB[:foo] returns a dataset
(SELECT * FROM foo), so your code Dataset#[], which issues a query to the
database (SELECT * FROM foo WHERE account LIMIT 1) and returns the first
row. Your second example is correct but doesn't specify a database to use,
so Sequel::Model.db will be used by default, and the default for that is
the first Database instance created (first entry in Sequel::DATABASES).
You probably want:
class Account < Sequel::Model(MyDB[Sequel[:foo][:account]]); end
# or:
class Account < Sequel::Model(MyDB.from{foo[:account]}); end
Thanks,
Jeremy
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