StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POrails "NoMethodError in SessionsController#create ". Apparently a nil object I don't expect, or so says the error
text
Body
copied!<p>I am trying to sign in users with sessions. My controller has a method 'create' sessions:</p> <pre><code>def create user = User.authenticate(params[:session][:email], params[:session][:password]) if user.nil? #create an error message and re-render the signin form flash.now[:error] = "Invalid email/password combination" @title = "Sign in" render 'new' else #sign in user and redirect to the user's show page sign_in user redirect_to user end end </code></pre> <p>the class method 'authenticate' always returns null. I uses the console to create users where 'nil?' returns false, and then I call 'authenticate' and it returns nil, everytime. I don't know why and have pored over it for hours. At first I thought it was the way I was passing the parameters to the authenticate method, but those should be right, and since the auth method doesn't even work in console with regular values it probably isnt the parameters but the structure of 'authenticate'. Here is the 'authenticate' method and its helper methods:</p> <pre><code>#defining a class method for "User" to authenticate a user who submits an email and password def User.authenticate(email, submitted_password) user = find_by_email(email) return nil if user.nil? return user if user.has_password?(submitted_password) end # Return true if the user's password matches the submitted password. def has_password?(submitted_password) encrypted_password == encrypt(submitted_password) end def self.authenticate_with_salt(id, cookie_salt) user =find_by_id(id) (user && user.salt == cookie_salt) ? user : nil end private def encrypt_password self.salt = make_salt if new_record? self.encrypted_password = encrypt(password) end def encrypt(string) secure_hash("#{salt}--#{string}") end def make_salt secure_hash("{#Time.now.utc}--#{password}") end def secure_hash(string) Digest::SHA2.hexdigest(string) end </code></pre> <p>Anyone know what the deal is? and I am happy to supply anymore information. I searched around for potential solutions, and couldn't find any. </p> <p>sign_in(user) method and helper methods stuff:</p> <pre><code>module SessionsHelper def sign_in(user) #set cookie permanently cookies.permanent.signed[:remember_token] = [user.id, user.salt] #define "current_user" so it can be used all over the place self.current_user = user end def current_user=(user) @current_user = user end def current_user @current_user ||= user_from_remember_token end def signed_in? !current_user.nil? end def sign_out cookies.delete(:remember_token) @current_user = nil end private def user_from_remember_token User.authenticate_with_salt(*remember_token) end def remember_token cookies.signed[:remember_token] || [nil, nil] end end </code></pre> <p>users_controller:</p> <pre><code>class UsersController < ApplicationController # GET requests are automatically handled by the "show" action. def show @user = User.find(params[:id]) @title = @user.name end def new @user = User.new @title = "Sign up" end def create @user = User.new(params[:user]) if @user.save sign_in @user flash[:success] = "Welcome to the Sample App!" redirect_to @user else @title = "Sign up" render 'new' end end end </code></pre>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload