ActiveModel::ForbiddenAttributesError when creating new user

rails-activerecord, ruby-on-rails

Solution

I guess you are using Rails 4. If so, the needed parameters must be marked as required.

You might want to do it like this:

class UsersController < ApplicationController

  def create
    @user = User.new(user_params)
    # ...
  end

  private

  def user_params
    params.require(:user).permit(:username, :email, :password, :salt, :encrypted_password)
  end
end

Problem

I have this model in Ruby but it throws a `ActiveModel::ForbiddenAttributesError` ``` class User < ActiveRecord::Base attr_accessor :password validates :username, :presence => true, :uniqueness => true, :length => {:in => 3..20} VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i validates :email, presence: true, :uniqueness => true, format: { with: VALID_EMAIL_REGEX } validates :password, :confirmation => true validates_length_of :password, :in => 6..20, :on => :create before_save :encrypt_password after_save :clear_password def encrypt_password if password.present? self.salt = BCrypt::Engine.generate_salt self.encrypted_password= BCrypt::Engine.hash_secret(password, salt) end end def clear_password self.password = nil end end ``` when I run this action ``` def create @user = User.new(params[:user]) if @user.save flash[:notice] = "You Signed up successfully" flash[:color]= "valid" else flash[:notice] = "Form is invalid" flash[:color]= "invalid" end render "new" end ``` on `ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]`. Can you please tell me how to get rid of this error or establish a proper user registration form?

Original source