[Rails] Rails base model

[DanielMedia]

I'm very new to Ruby and to Rails. I'm coming from PHP and CakePHP.

I would like to create a base model from which all other models will
inherit from.

I have done this:

class AppModel < ActiveRecord::Base
end

and

class Post < AppModel
end

I'm getting the following error:

Table 'blog_development.app_models' doesn't exist

My question is, how do I tell Rails not to look for a table named
"app_models" AND am I even taking the right approach here? Is there a
better way to do this?

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