Rails - Jan 2010 - rake db:migrate:up to change scaffold??

I created a scaffold for a table ''mytable'' in mysql with two
columns and
then ran rake db:migrate. This worked. Then I wanted to add a column to
the existing ''mytable'' in the database. So I go to migrate
directory and
modify the create_mytable.rb file to add a new column. Then I run rake
db:migrate:up . Gives me error: rake aborted VERSION is required.

I want to know how to change scaffold and change database during my
development. I am thinking of changing datatypes or coulumns in the
table.

Am I using wrong approach, please let me know.
Also references to advanced tutorials on scaffolding would help me.
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You don''t change the migration you''ve already ran, you make a
new one.

For more on migrations, see here:
http://guides.rubyonrails.org/migrations.html

On Sun, Jan 17, 2010 at 7:13 PM, Vishwa Rao
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> I created a scaffold for a table ''mytable'' in mysql with
two columns and
> then ran rake db:migrate. This worked. Then I wanted to add a column to
> the existing ''mytable'' in the database. So I go to
migrate directory and
> modify the create_mytable.rb file to add a new column. Then I run rake
> db:migrate:up . Gives me error: rake aborted VERSION is required.
>
> I want to know how to change scaffold and change database during my
> development. I am thinking of changing datatypes or coulumns in the
> table.
>
> Am I using wrong approach, please let me know.
> Also references to advanced tutorials on scaffolding would help me.
> --
> Posted via http://www.ruby-forum.com/.
>
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Steve Klabnik wrote:
> You don''t change the migration you''ve already ran, you
make a new one.
> 
> For more on migrations, see here:
> http://guides.rubyonrails.org/migrations.html
Thank you. I am reading up on it.
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