Ruby on rails 设计：手动加密密码并添加到rails中的数据库

在rails项目中，我希望通过管理员管理我的用户，这意味着管理员可以添加新用户、更新用户名和密码以及删除用户。现在我编写下面的代码来执行此操作。通过下面的代码，我可以更新和删除一个用户，但当我想向数据库添加新用户时，designe的默认验证是正常工作的，比如密码不能为空，但当我单击submit`添加用户时，页面重定向到上一页，但用户不添加到数据库

对于管理用户，我使用Desive并创建一个userscontroller。我有以下代码： 用户\u controller.rb

rootes.rb

我认为要将用户添加到数据库中，我必须加密我的密码，然后将电子邮件和加密的密码添加到数据库中。但我不知道该怎么做。有什么想法吗

服务器日志：

---

你能在日志中发布错误吗？我编辑问题并添加服务器日志。当你想从管理员添加用户并再次检查时，你能评论可注册模块以覆盖默认注册行为吗？我不验证默认可注册模块。我从模型中删除了：registerable，但我得到了错误，并将其再次添加到模型中。

class UsersController < ApplicationController

  before_action :set_user, only: [:show, :edit, :update, :destroy]
  def index
    @users = User.all
  end

  def show
  end
  def new
    @user = User.new
  end

  def edit
  end

  def create
    @user = User.new(user_params)

    respond_to do |format|
      if @user.save
        format.html { redirect_to @user, notice: 'User was successfully created.' }
        format.json { render :show, status: :created, location: @user }
      else
        format.html { render :new }
        format.json { render json: @user.errors, status: :unprocessable_entity }
      end
    end
  end

  def update
    respond_to do |format|
      if @user.update(user_params)
        format.html { redirect_to @user, notice: 'User was successfully updated.' }
        format.json { render :show, status: :ok, location: @user }
      else
        format.html { render :edit }
        format.json { render json: @user.errors, status: :unprocessable_entity }
      end
    end
  end

  def destroy
    @user.destroy
    respond_to do |format|
      format.html { redirect_to users_url, notice: 'User was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
  def set_user
    @user = User.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def user_params
    params.require(:user).permit(:email, :password)
  end

end

<%= form_for(@user) do |f| %>
  <% if @user.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>

      <ul>
      <% @user.errors.full_messages.each do |message| %>
        <li><%= message %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :email %><br>
    <%= f.text_field :email %>
  </div>
  <div class="field">
    <%= f.label :password %><br>
    <%= f.text_field :password %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

devise_for :users
  resources :users, :controller => "users"

Started GET "/users/new" for 127.0.0.1 at 2014-07-12 15:49:20 +0430
Processing by UsersController#new as HTML
  User Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 2 ORDER
  Rendered users/_form.html.erb (3.0ms)
  Rendered users/new.html.erb within layouts/application (5.0ms)
Completed 200 OK in 76ms (Views: 22.0ms | ActiveRecord: 1.0ms)


Started POST "/users" for 127.0.0.1 at 2014-07-12 15:49:43 +0430
Processing by Devise::RegistrationsController#create as HTML
  Parameters: {"utf8"=>"√", "authenticity_token"=>"FNiCblkf5kmRxAWtoRcTvwu8LZ/Rm
  User Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 2 ORDER
Redirected to http://localhost:3000/
Filter chain halted as :require_no_authentication rendered or redirected
Completed 302 Found in 5ms (ActiveRecord: 0.0ms)


Started GET "/" for 127.0.0.1 at 2014-07-12 15:49:43 +0430
Processing by HomeController#index as HTML
  User Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 2 ORDER
Redirected to http://localhost:3000/dashboard
Completed 302 Found in 5ms (ActiveRecord: 0.0ms)


Started GET "/dashboard" for 127.0.0.1 at 2014-07-12 15:49:43 +0430
Processing by DashboardController#index as HTML
  User Load (1.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 2 ORDER
  Rendered dashboard/index.html.erb within layouts/application (0.0ms)
Completed 200 OK in 21ms (Views: 17.0ms | ActiveRecord: 1.0ms)