migration
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Adding a Non-null Column with no Default Value in a Rails Migration by killthekitten
I found that one of the original Spree 1.3.0 migrations is broken for rolling back because of several reasons.
One of the reasons is that down method adds price without :null => false option.
It was done, I think, because it's hard to define :null => false column without :default option. More under the cut
Smarter migrations with capistrano in your Rails app by makaroni4
Quite often in #capistrano recipes I see running migrations and assets precompilation on each deploy which I think is not what you want because it takes time and if there is no new migrations or assets its time is spent in vain. In this post I will show you a script which is used in #gistflow to skip #migrations. More under the cut
How to safely delete migration in Rails by makaroni4
In running #rails application there could be hundreds of #migration files and one should definitely delete invalid ones. More under the cut