Rails - Jun 2009 - question about create_table

Hi everyone,

I am a newb. I have one question about following code:

def self.up
  create_table :order_histories do |t|
    t.column :order_id, :integer, :null => false
    t.column :created_at, :timestamp
    t.column :notes, :text
  end
end

so, create_table is a method which takes the name of table
(order_histories) and a code block. I wonder what''s the data type of
t?? where can I find it?

xiahong

> I am a newb. I have one question about following code:
>
> def self.up
>  create_table :order_histories do |t|
>    t.column :order_id, :integer, :null => false
>    t.column :created_at, :timestamp
>    t.column :notes, :text
>  end
> end
>
> so, create_table is a method which takes the name of table
> (order_histories) and a code block. I wonder what''s the data type
of
> t?? where can I find it?
Couple of ways you could figure it out...  the hack-ish way would be  
to add the following to your migration and then run it:

puts t.class

Or, look at the source for create_table in activerecord/lib/ 
active_record/connection_adapters/abstract/schema_statements.rb

That says it''s a TableDefinition object.

-philip

thx

2009/6/22 Philip Hallstrom <philip-LSG90OXdqQE@public.gmane.org>
>
> > I am a newb. I have one question about following code:
> >
> > def self.up
> >  create_table :order_histories do |t|
> >    t.column :order_id, :integer, :null => false
> >    t.column :created_at, :timestamp
> >    t.column :notes, :text
> >  end
> > end
> >
> > so, create_table is a method which takes the name of table
> > (order_histories) and a code block. I wonder what''s the data
type of
> > t?? where can I find it?
>
> Couple of ways you could figure it out...  the hack-ish way would be
> to add the following to your migration and then run it:
>
> puts t.class
>
> Or, look at the source for create_table in activerecord/lib/
> active_record/connection_adapters/abstract/schema_statements.rb
>
> That says it''s a TableDefinition object.
>
> -philip
>
> >
>
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