How to require activerecord-import?

[gerrywastaken]

When I set require: false in my Gemfile and instead do the following in a script

require 'active_record'
require 'activerecord-import'
require 'activerecord-import/base'
require 'activerecord-import/import'

activerecord-import instead tries to do every insert as a single insert. What am I doing wrong here?

I can see that supports_import? is somehow being set to false and this is why it doesn't work, but I'm not sure why that would be the case.

[gerrywastaken]

Ok so I have to load activerecord-import before active_record is loaded: https://github.com/zdennis/activerecord-import/blob/master/lib/activerecord-import.rb#L3

I'm wondering if that should be added to the readme? There is discussion of how adapters need to be loaded, but not activerecord-import itself.

[gerrywastaken]

I wonder if a lot of people require activerecord-import after active record and then just assume it made no difference to their imports or that it's broken. Perhaps there should be some warning when activerecord_import thinks that the connection doesn't "support_import".

[jkowens]

@gerrywastaken I'd have to do some reading on ActiveSupport's lazy loading to better understand what is going on.

@amatsuda are you able to provide any insight and/or suggestions?

[jkowens]

@gerrywastaken in your script if you just do:

require 'active_record'
require 'activerecord-import'

Does that work?

[jkowens]

There is a wiki entry on how to require activerecord-import. I just want to make sure that it is accurate. Hopefully this will end up in the readme one of these days 😜

https://github.com/zdennis/activerecord-import/wiki/Requiring

[gerrywastaken]

Does that work?

Nope, because the onload of active_record would have already been triggered and so this is this never run:
https://github.com/zdennis/activerecord-import/blob/master/lib/activerecord-import.rb#L3

@jkowens

[gerrywastaken]

it would be better if there was just a call we could make to initialize activerecord-import at any time no matter the load order.

[jkowens]

So I did some testing and the following at the beginning of your script should do the trick:

require 'activerecord-import/base'
require 'activerecord-import/active_record/adapters/postgresql_adapter'

I updated the wiki, but I'll see about adding a method to simplify that initialization.

[gerrywastaken]

That's pretty helpful, thanks @jkowens!