Validates_presence_of


#1

I’m confused about the usage of ‘validates_presence_of’ and the
‘default’ parameter of the ‘column’ method. Let’s say I have a model
that looks something like this:

class CreateErrorTypes < ActiveRecord::Migration
def self.up
create_table :error_types do |t|
t.column :description, :string, :limit => 254, :null => false
t.column :can_delete, :boolean, :null => false, :default =>
false
end
end
def self.down
drop_table :error_types
end
end

class ErrorType < ActiveRecord::Base
validates_presence_of :description
validates_presence_of :can_delete
end

Then in console I do this:

ErrorType.create(:description => “General error”)

What I expect is an ErrorType object with can_delete set to false, but
what I get is an error saying that can_delete “can’t be blank”. Why
isn’t it setting the default value of that field to false??