我已经完成了第8章的第一部分,只是遇到了这两个错误:
Failures:
1) Authentication signin with invalid information
Failure/Error: before { click_button "Sign in" }
NoMethodError:
undefined method `find_by' for #<Class:0xab805ec>
# ./app/controllers/sessions_controller.rb:7:in `create'
# (eval):2:in `click_button'
# ./spec/requests/authentication_pages_spec.rb:18:in `block (4 levels) in <top required)>'
2) Authentication signin with invalid information
Failure/Error: before { click_button "Sign in" }
NoMethodError:
undefined method `find_by' for #<Class:0xab805ec>
# ./app/controllers/sessions_controller.rb:7:in `create'
# (eval):2:in `click_button'
# ./spec/requests/authentication_pages_spec.rb:18:in `block (4 levels) in <top (required)>'
所需文件:
sessions_controller
class SessionsController < ApplicationController
def new
end
def create
user = User.find_by(email: params[:session][:email].downcase)
if user && user.authenticate(params[:session][:password])
# Sign the user in and redirect to the user's show page.
else
flash.now[:error] = 'Invalid email/password combination'
render 'new'
end
end
def destroy
end
end
身份验证页面规范
require 'spec_helper'
describe "Authentication" do
subject { page }
describe "signin page" do
before { visit signin_path }
it { should have_content('Sign in') }
it { should have_title('Sign in') }
end
describe "signin" do
before { visit signin_path }
describe "with invalid information" do
before { click_button "Sign in" }
it { should have_title('Sign in') }
it { should have_selector('div.alert.alert-error', text: 'Invalid') }
end
describe "after visiting another page" do
before { click_link "Home" }
it { should_not have_selector('div.alert.alert-error') }
end
end
describe "with valid information" do
let(:user) { FactoryGirl.create(:user) }
before do
fill_in "Email", with: user.email.upcase
fill_in "Password", with: user.password
click_button "Sign in"
end
it { should have_title(user.name) }
it { should have_link('Profile', href: user_path(user)) }
it { should have_link('Sign out', href: signout_path) }
it { should_not have_link('Sign in', href: signin_path) }
end
end
我开始研究错误的各种片段,并阅读类似的问题并尝试他们的解决方案但无济于事。即使盯着代码,我也发现问题在于会话控制器内部的create方法,特别是find_by方法。作为铁杆及其概念的新手,我仍然感到困惑。任何帮助和解释将不胜感激。
答案 0 :(得分:0)
这应该做:
user = User.find_by_email(params[:session][:email].downcase)
答案 1 :(得分:0)
我认为您使用的是较旧版本的rails
对于Rails 4
User.find_by(email: params[:session][:email].downcase)
对于旧版本,请尝试
User.find_by_email(params[:session][:email].downcase)