登录功能不起作用 [英] Sign in function not working

问题描述

我开发了一个应用，允许用户注册、登录和退出(如果你愿意，我自己从头开始设计).

I've built an app that allows users to sign up, sign in, and sign out (my own devise from the ground up, if you will).

该应用允许用户注册，但在尝试登录时出现以下错误:

The app allows users to sign up, but when trying to sign in I get the following error:

//(不用说我处于停滞状态，谁能想到这是他们自己的天才)

// (needless to say I'm at a stand still, who ever can figure this out is a genius in they're own right)

undefined method `-' for nil:NilClass

Rails.root: /Users/user/Sites/rails_projects/sample_app1

app/controllers/sessions_controller.rb:11:in `create'

请求

参数:

{"utf8"=>"✓",
"authenticity_token"=>"/SEaqnrMf5X0pd4FVWbu8uWVAjTNw4LPKiXg+8Hl0PQ=",
"session"=>{"email"=>"[e-mail]",
"password"=>"[FILTERED]"},
"commit"=>"Sign in"} 

这是我的 Session_Controller 内容:

Here are my Session_Controller Contents:

class SessionsController < ApplicationController
def new
@title = "Sign in"
end

def create
user = User.authenticate(params[:session][:email],
                        params[:session][:password])
if user.nil?
flash.now[:error] = "Invalid email/password combination."
@title - "Sign In"
render 'new'
else
sign_in user
redirect_to user
end
end   

def destroy
 sign_out
 redirect_to root_path
end
end

Users_Controller 内容

Users_Controller contents

class UsersController < ApplicationController

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
redirect_to @user, :flash =>  {:success => "Welcome to the Fun House!"}
else
@title = "Sign up"
 render 'new'
end
end
end

Sessions_helper 内容

Sessions_helper contents

module SessionsHelper

 def sign_in(user)
cookies.permanent.signed[:remember_token] = [user.id, user.salt]
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)
 self.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

最后是 Users_helper 内容:

And Lastly Users_helper contents:

module UsersHelper
def gravatar_for(user, options = { :size => 50})
gravatar_image_tag(user.email.downcase, :alt => user.name, 
                                        :class => 'gravatar',
                                        :gravatar => options)
end
end

推荐答案

我认为这一行:

@title - "Sign In"

应该是这样的:

@title = "Sign In"

这篇关于登录功能不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！