Why does my rails rollback when I try to user.save?

Question

I have installed the RailsTutorial sample app(the twitter like application) and am trying to understand why the following piece of console code does not update the database

Answer 1

After you try to save or validate an active record model instance you can view more information about what happened with a few useful commands.

user = User.find(108)
user.name = "Larry"
user.valid? # returns false
user.errors.messages # returns something like {email: "Cant be blank"}

Obviously I made that error up because I don't know what your model file looks like but if it roles back its for one of two reasons usually. The first is your validations failed. If their are no error messages its probably because something in your filter chain returned false. For example

class User << ActiveRecord::Base
  before_save :accidentally_return_false

  def accidentally_return_false
    self.some_boolean = (condition == value)
  end
end

user = User.new( params )
user.save # where condition does not equal value
user.valid? # false because of the before save method

Hope that helps

Answer 2

When save rollbacks, use save! instead, and error log will be printed.