I like it too. Looks like it would be an easy change as well. On Monday, December 1, 2014 4:18:47 PM UTC-6, Alex Soble wrote: > > Hi Rails core team, > > I've been mulling over an idea for a bit of new syntax, want to hear what > you think about it. > > Two of the most common things I do as a developer when generating a new > migration are (1) add defaults to help avoid nil errors and (2) add indices > to attributes like foreign keys for performance. The migration generator > comes with nice syntax that makes adding indices easy: > > $ bin/rails generate migration AddPartNumberToProducts part_number:string: > index > > (from > http://guides.rubyonrails.org/migrations.html#creating-a-standalone-migration > ) > > But there's no corresponding syntax for adding defaults. You generate the > migration, find the generated file, add defaults by hand and then run the > migration. What about a way to add defaults to new migrations from the > command line? Could look like this: > > rails g migration AddGearsToBicycles gears:integer[default:3] > > Or in a new model: > > rails g model Bicycle mileage:integer[default:0] gears:integer[default:3] > > Improvements or suggestions on the proposed syntax? Any feedback would be > much appreciated! Thanks everyone. >
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