[rails 4.1] weird behaviour in rails console? lazy loading of database connection or spring?

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nathanvda

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Apr 23, 2014, 10:01:02 AM4/23/14
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I guess I am the only one using it like this, by i regularly start my `rails console` to quickly show the column-names of models. 

Since 4.1 (afaik), the first call to a class does not return the model introspection, but instead urges me to use `Batch.connection` to establish a connection??? 

If I use a specific method to get the column names, I get no error, and afterwards the class introspection just works. 

Of course this is no biggie, but I am curious what the cause is of the this behaviour, whether this is intended or not, and how I could circumvent it. 

Example console output: 

```
Loading development environment (Rails 4.1.0)
 :001 > Batch
 => Batch (call 'Batch.connection' to establish a connection)
 :002 > Batch.column_names
 => ["id", "name", "batch_nr", "revision", "comments", "batch_status_id", "created_at", "updated_at"]
 :003 > Batch
 => Batch(id: integer, name: string, batch_nr: string, revision: string, comments: text, batch_status_id: integer, created_at: datetime, updated_at: datetime)
```

Any tips or hints would be greatly appreciated.

Hassan Schroeder

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Apr 23, 2014, 11:45:22 AM4/23/14
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On Wed, Apr 23, 2014 at 7:01 AM, nathanvda <nath...@gmail.com> wrote:

> Since 4.1 (afaik), the first call to a class does not return the model
> introspection, but instead urges me to use `Batch.connection` to establish a
> connection???

> Of course this is no biggie, but I am curious what the cause is of the this
> behaviour, whether this is intended or not, and how I could circumvent it.

I've noticed that, and it seems like a bug to me, but I haven't had the
time to investigate.

That said, this behavior doesn't occur when using `pry` for the Rails
console, so just one more reason to make that standard :-)

FWIW,
--
Hassan Schroeder ------------------------ hassan.s...@gmail.com
http://about.me/hassanschroeder
twitter: @hassan

Makis Giaourtis

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Sep 18, 2014, 6:39:00 AM9/18/14
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I got the same behaviour in Rails 4.0.8

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