Question

I have the tables (Maybe they’re not called that) Users and Posts. I added a lot of tests posts to the Posts table (maybe it’s called a database) so I want to wipe it. I know that I could use rake db:reset but that would also wipe the Users table.

Does anyone know how to reset only a specific table?

Answer 1

You might be better off creating a rake task for this. You could even namespace it inside of ‘db’ if you wanted. ie rake db:reset_unimportant_models

In that task u can then do something like: ModelName.delete_all

For more info on delete_all check here: http://apidock.com/rails/ActiveRecord/Relation/delete_all

For more info on creating rake tasks, check here: http://jasonseifer.com/2010/04/06/rake-tutorial

Here is an example of what you might do:

# lib/tasks/reset_unimportant_models_task.rake
namespace :db do
  desc "Sequentially clears out the models I don't care about"
  task :reset_unimportant_models => :environment do
    puts "Clearing out the BlahModel model"
    BlahModel.destroy_all
    puts "Finished."
  end
end

You would then call that like:
rake db:reset_unimportant_models
and when you run rake -T u will see it up with the db:blah tasks