Rails SQLite3 :: SQLException

Question

I'm new at the Rails framework and following Michael Hartl's tutorials. The error I have currently is below:

First of all I see it says no such column: users.remember_token but why? Because I run this code:

$ bundle exec rake db:migrate
$ bundle exec rake test:prepare

Before which I have a file with content:

class AddRememberTokenToUsers < ActiveRecord::Migration
  def change
    add_column :users, :remember_token, :string
    add_index  :users, :remember_token
  end
end

I am suspecting that this my come from my db/development.sqlite3 because I actually don't see a remember_token column. But my assumption was after running $ bundle exec rake db:migrate I should see the new column right? This is how the development.sqlite3 looks like:

I also have a SessionsHelper file which looks like this:

module SessionsHelper

  def sign_in(user)
    remember_token = User.new_remember_token
    cookies.permanent[:remember_token] = remember_token
    user.update_attribute(:remember_token, User.encrypt(remember_token))
    self.current_user = user
  end

  def signed_in?
    !current_user.nil?
  end

  def current_user=(user)
    @current_user = user
  end

  def current_user
    remember_token = User.encrypt(cookies[:remember_token])
    @current_user ||= User.find_by(remember_token: remember_token)
  end
end

Answer 1

Per Andre: rake db:drop db:create rake db:migrate . WARNING: this will erase all your data.

Per me: Read your schema_migrations table to see if db:migrate with think it should run your migration...

Answer 2

@Phlip 's answer worked for me. when you database already have some user, then "remember_token" migrate won't work. you must clean your date firt,then do db:migrate.

Answer 3

I ran into the same exact issue. Carbon copy of this question. Even after following the directions in the accepted answer, I could not get the "remember_token" column to be added to the database even though the migration file was there inside db/migrate. I opened the actual migration file and noticed that it did not contain everything needed. My migration file looked like this:

class AddRememberTokenToUsers < ActiveRecord::Migration
end

When it needed to be this:

class AddRememberTokenToUsers < ActiveRecord::Migration
  def change
add_column :users, :remember_token, :string
  add_index  :users, :remember_token
  end
end

After adding in the missing code, saving, then doing a db:migrate, I was back in business! Just wanted to leave this here, if someone else runs into the same issue.