Merge all migation files

[Manish Shrivastava]

Hi, My One of Rails Project started 2 years ago. Today I see there are many changes on database. Many Tables/ and table fields got added and many were removed as well. If I see my db/migration folder It has almost 200 files.

I wish to suggest a feature where by running a command like `rake db:migrate:files` could merge all files into table-wise. like if 20 tables are there It make new 20 migration cleaner way.

Please suggest!

[Maurício Linhares]

This is what your schema.rb file is for.

-
Maurício Linhares
http://mauricio.github.io/ - http://twitter.com/#!/mauriciojr

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[Arthur Neves]

The schema.rb file it is indeed for this. 
One thing we do at Shopify, is we have a `db:migrate:rollup` task, that delete the files older than 3 months that are on the schema.rb already. So we dont keep a huge folder of migrations.

Not sure if that's everyones use case tho.

[Radan Skoric]

At Toptal we do a similar thing, we periodically clean up old migrations with https://github.com/jalkoby/squasher. We delete all old ones and update one "initial migration".