开发环境
Ruby:Ruby1.9.1
Rails:Rails2.3.5
Mysql:Mysql5.0.9
Driver:mysql-2.8.1-x86-mingw32.gem
IDE:Rubymine2.0.1
一、创建View/login
在View/login下创建login.html.erb、index.html.erb、loginFail.html.erb
login.html.erb代码如下：
<h1>Welcome to login!</h1>
<% form_tag do %>
<table>
<tr>
<td>User name:</td>
<td><%= text_field("user", "username") %></td>
</tr>
<tr>
<td>Password:</td>
<td><%= password_field("user", "hashed_password") %></td>
</tr>
<tr>
<td></td>
<td><input type="submit" value=" login " /> <input type="reset" value=" reset " /></td>
</tr>
</table>
<% end %>
index.html.erb代码如下：
<h1>Choose a page to look!</h1>
<p><%= link_to 'Users', :controller=>"users",:action=>"index" %></p>
<p><%= link_to 'Products', :controller=>"products",:action=>"index"%></p>
<p><%= link_to 'Logout', :action=>"login"%></p>
loginFail.html.erb
<h1>Invalid user/password combination</h1>
<%form_tag do%>
<%= link_to 'Back', :action=>"login" %>
<%end%>
二、创建login_contoller.rb
代码如下：
class LoginController < ApplicationController
def login
if request.get?
session[:user_id] = nil
@user = User.new
else
@user = User.new(params[:user])
logged_in_user = @user.try_to_login
if logged_in_user
session[:user_id] = logged_in_user.id
redirect_to(:action => "index")
else
# flash[:notice] = "Invalid user/password combination"
redirect_to(:action => "loginFail")
end
end
end
def loginFail
end
#清空登录信息
def reset
params[:user]["username"]=null
