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就是密碼驗(yàn)證那一塊出了問(wèn)題（即密碼不符）
我重新寫過(guò)這一塊，以及Google找了相關(guān)的實(shí)例還是會(huì)報(bào)錯(cuò)，希望能解決，謝謝。
這個(gè)專案來(lái)自我學(xué)習(xí)的網(wǎng)站：https://www.railstutorial.org...
PS：目前懷疑是<%= render 'shared/error_messages' %>(edit.html.erb)這條程序沒(méi)起作用，不過(guò)「註冊(cè)用戶」也是用的同樣的方法，能正常驗(yàn)證密碼和郵箱的格式。但是「重置密碼」就不起作用了。

實(shí)際操作中可以分辨空值、密碼過(guò)短。但輸入兩個(gè)不同的密碼就直接修改成功為第一次輸入的密碼了。

app/views/password_resets/edit.html.erb

 <% provide(:title, 'Reset password') %>
<h1>Reset password</h1>

<p class="row">
  <p class="col-md-6 col-md-offset-3">
    <%= form_for(@user, url: password_reset_path(params[:id])) do |f| %>
      <%= render 'shared/error_messages' %>

      <%= hidden_field_tag :email, @user.email %>

      <%= f.label :password %>
      <%= f.password_field :password, class: 'form-control' %>

      <%= f.label :password_confirmation, "Confirmation" %>
      <%= f.password_field :password_confirmation, class: 'form-control' %>

      <%= f.submit "Update password", class: "btn btn-primary" %>
    <% end %>
  </p>
</p>

app/controllers/password_resets_controller.rb

class PasswordResetsController < ApplicationController
  before_action :get_user,         only: [:edit, :update]
  before_action :valid_user,       only: [:edit, :update]
  before_action :check_expiration, only: [:edit, :update]    # Case (1)

  def new
  end

  def create
    @user = User.find_by(email: params[:password_reset][:email].downcase)
    if @user
      @user.create_reset_digest
      @user.send_password_reset_email
      flash[:info] = "Email sent with password reset instructions"
      redirect_to root_url
    else
      flash.now[:danger] = "Email address not found"
      render 'new'
    end
  end

  def edit
  end

  def update
    if params[:user][:password].empty?                  # Case (3)
      @user.errors.add(:password, "can't be empty")
      render 'edit'
    elsif @user.update_attributes(user_params)          # Case (4)
      log_in @user
      flash[:success] = "Password has been reset."
      redirect_to @user
    else
      render 'edit'                                     # Case (2)
    end
  end

  private

    def user_params
      params.require(:user).permit(:password, :password_confirmation)
    end

    # Before filters

    def get_user
      @user = User.find_by(email: params[:email])
    end

    # Confirms a valid user.
    def valid_user
      unless (@user && @user.activated? &&
              @user.authenticated?(:reset, params[:id]))
        redirect_to root_url
      end
    end

    # Checks expiration of reset token.
    def check_expiration
      if @user.password_reset_expired?
        flash[:danger] = "Password reset has expired."
        redirect_to new_password_reset_url
      end
    end
end

test/integration/password_resets_test.rb

require 'test_helper'

class PasswordResetsTest < ActionDispatch::IntegrationTest
  def setup
      ActionMailer::Base.deliveries.clear
      @user = users(:michael)
  end

  test "password resets" do
      get new_password_reset_path
      assert_template 'password_resets/new'
      
      # 電子郵箱地址無(wú)效
      post password_resets_path, params: { password_reset: { email: "" } }
      assert_not flash.empty?
      assert_template 'password_resets/new'

      # 電子郵箱地址有效
      post password_resets_path,
               params: { password_reset: { email: @user.email } }
      assert_not_equal @user.reset_digest, @user.reload.reset_digest
      assert_equal 1, ActionMailer::Base.deliveries.size
      assert_not flash.empty?
      assert_redirected_to root_url

      # 密碼重置表單
      user = assigns(:user)

      # 電子郵箱地址錯(cuò)誤
      get edit_password_reset_path(user.reset_token, email: "")
      assert_redirected_to root_url

      # 用戶未激活
      user.toggle!(:activated)
      get edit_password_reset_path(user.reset_token, email: user.email)
      assert_redirected_to root_url
      user.toggle!(:activated)

      # 電子郵箱地址正確，令牌不對(duì)
      get edit_password_reset_path('wrong token', email: user.email)
      assert_redirected_to root_url

      # 電子郵箱地址正確，令牌也對(duì)
      get edit_password_reset_path(user.reset_token, email: user.email)
      assert_template 'password_resets/edit'
      assert_select "input[name=email][type=hidden][value=?]", user.email

      # 密碼和密碼確認(rèn)不匹配
      patch password_reset_path(user.reset_token),
          params: { email: user.email,
                    user: { password:              "foobaz",
                            password_confirmation: "barquux" } }
    assert_select 'p#error_explanation'    

      # 密碼為空值
      patch password_reset_path(user.reset_token),
                  params: { email: user.email,
                                      user: { password:                             "",
                                                      password_confirmation:  "" } }
      assert_select 'p#error_explanation'

      # 密碼和密碼確認(rèn)有效
      patch password_reset_path(user.reset_token),
                  params: { email: user.email,
                                      user: { password:                             "foobaz",
                                                      password_confirmation:  "foobaz" } }
      assert is_logged_in?
      assert_not flash.empty?
      assert_redirected_to user
  end

end

終端報(bào)錯(cuò)誤：

cmwap:sample_app terry$ rails test
Running via Spring preloader in process 23814
Started with run options --seed 63903

 FAIL["test_password_resets", PasswordResetsTest, 1.365597692999927]
 test_password_resets#PasswordResetsTest (1.37s)
        Expected at least 1 element matching "p#error_explanation", found 0..
        Expected 0 to be >= 1.
        test/integration/password_resets_test.rb:53:in `block in <class:PasswordResetsTest>'

  39/39: [=================================] 100% Time: 00:00:01, Time: 00:00:01

Finished in 1.88071s
39 tests, 186 assertions, 1 failures, 0 errors, 0 skips