How do I create a rails migration to remove/change precision and scale on decimal?

Question

I am trying to remove the precision and scale attributes from decimal (PostgreSQL NUMERIC) fields in my database?

The fields:

t.decimal          


        

Answer 1

format :

change_column(table_name, column_name, type, options): Changes the column to a different type using the same parameters as add_column.

First in you terminal:

rails g migration change_numeric_field_in_my_table

Then in your migration file:

class ChangeNumbericFieldInMyTable < ActiveRecord::Migration
  def self.up
   change_column :my_table, :revenue_per_transaction, :decimal, :precision => give whatever, :scale => give whatever
  end
end

then

run rake db:migrate

Source : http://api.rubyonrails.org/classes/ActiveRecord/Migration.html

Answer 2

In your migration file change your field to :integer and run run rake db:migrate