remove columns from schema rails code example
Example 1: how to remove columns from rails
rails generate migration RemoveFieldNameFromTableName field_name:datatype
remove_column :table_name, :column_name
Example 2: rails remove column from model
class RemoveCountryFromSampleApps < ActiveRecord::Migration[5.0]
def change
remove_column :sample_apps, :country, :string
end
end