Ruby on Rails的如何顯示（用戶名和密碼）登錄驗證

Question

這是我的登錄應用程序。請任何人都可以解釋我怎麼能檢查登錄驗證

pbl01 /配置/ routes.rb中

Rails.application.routes.draw do 
devise_for :users, :controllers => { 
:registrations => 'users/registrations' 
} 
resources :import,only: [:index,:create] 
root 'root#index' 

# For details on the DSL available within this file, see 
http://guides.rubyonrails.org/routing.html 
end 

pbl01 /應用/控制器/用戶/ sessions_controller.rb

class Users::SessionsController < Devise::SessionsController 
before_action :configure_sign_in_params, only: [:create] 

def new 

end 

def create 
authorized_user=User.authenticate(params[:userid],params[:password]) 

    if authorized_user 
     flash[:notice] = "Wow Welcome again, you logged in as" 

else 
    flash[:notice] = "Invalid Username or Password" 
    flash[:color]= "invalid" 
    render "new" 
    end 
end 

pbl01 /應用/模型/ user.rb

require 'csv' 
class User < ApplicationRecord 
validates :userid, :presence => true, 
validates :password, :presence => true, 


devise :database_authenticatable, :registerable, 
    :recoverable, :rememberable, :trackable, :validatable 

def email_required? 
false 
end 
def self.import(file) 
CSV.foreach(file.path, headers: true) do |row| 

    users = find_by(userid: row["userid"]) || new 

    users.attributes = row.to_hash.slice(*updatable_attributes) 
    users.password= row["password"] 

    users.save! 
end 
end 


def self.updatable_attributes 
["userid", "name", "email"] 
end 
end 

pbl01 /應用/視圖/設計/會話/ new.html.erb

<h2>Log in</h2> 

<%= form_for(resource, as: resource_name, url: session_path(resource_name)) do |f| %> 
<% if @user.errors.any? %> 
<div class="field"> 
<%= f.label :userid %><br /> 
<%= f.text_field :userid, autofocus: true %> 
</div> 

<div class="field"> 
<%= f.label :password %><br /> 
<%= f.password_field :password, autocomplete: "off" %> 
<% for message_error in @user.errors.full_messages %> 
    <li>* <%= message_error %></li> 
<% end %> 
</div> 

<% if devise_mapping.rememberable? -%> 
<div class="field"> 
    <%= f.check_box :remember_me %> 
    <%= f.label :remember_me %> 
</div> 
<% end -%> 

<div class="actions"> 
<%= f.submit "Log in" %> 
</div> 
<% end %> 

<%= render "devise/shared/links" %> 

Answer 1

I believe you should change to something like this. 

    <h2>Log in</h2> 
    <%= form_for(resource, as: resource_name, url: 
     session_path(resource_name)) do |f| %> 
     <% if @user.errors.any? %> 
     <% for message_error in @user.errors.full_messages %> 
      <li>* <%= message_error %></li> 
     <% end %> 
     <% end %> 
    <div class="field"> 
    <%= f.label :userid %><br /> 
    <%= f.text_field :userid, autofocus: true %> 
    </div> 

    <div class="field"> 
     <%= f.label :password %><br /> 
     <%= f.password_field :password, autocomplete: "off" %> 

    </div> 

    <% if devise_mapping.rememberable? -%> 
    <div class="field"> 
    <%= f.check_box :remember_me %> 
    <%= f.label :remember_me %> 
    </div> 
    <% end %> 



    <div class="actions"> 
    <%= f.submit "Log in" %> 
    </div> 
    <% end %> 

    <%= render "devise/shared/links" %>