How the data will saved in SQlite DB using Ruby on rails

I have a issue regarding save datas in database using RoR. Can anybody please help me to solve the issue which is explained below.

Issue:

Actually I want to save data in DB after clicking the submit button.But when I clicked on submit button it is showing message "data could not submitted successfully".

My code snippets are as follows.

views/homes/registration.html.erb:

<div class="totaldiv">
  <div class="navdiv"><span>STUDENT INFORMATION</span></div>
  <div class="wrapper">
  <div id="leftsidebtn">
 <ul>
    <li><a href="/homes/index">Back</a></li>
 </ul>  
</div>
</div>
<div class="restdiv" id="ex3" >
<center>
  <div class="reg_form">
    <%= form_for :users,:url => {:action => 'savedata'} do |f|  %>
<p>
<label for="first_name">First Name :</label>
<%= f.text_field :first_name,:class => 'first_name', placeholder:"Enter your first name" %>
</p>
<p>
<label for="last_name">Last Name :</label>
<%= f.text_field :last_name,:class => 'first_name', placeholder:"Enter your last name" %>
</p>
<p>
<label for="email_id">Email Id :</label>
<%= f.email_field :email,:class => 'first_name', placeholder:"Enter your email id" %>
</p>
<p>
<label for="tel_no">Phone No :</label>
<%= f.telephone_field :tel_no,:class => 'first_name', placeholder:"Enter your Phone no" %>
</p>
<p>
<label for="tel_no">Password :</label>
<%= f.password_field :password,:class => 'first_name', placeholder:"Enter your password" %>
</p>
<p>
<label for="tel_no">Confirm password</label>
<%= f.password_field :password_confirmation ,:class => 'first_name', placeholder:"Enter your password again" %>
</p>
<p>
<label for="adress">Adress :</label>
<%= f.text_area :address ,:class => 'address_text', placeholder:"Enter your Adress" %>
</p>
<p>
<%= f.submit 'Submit Data',:class => 'submit_button' %>
</p>
<% end %>
</div>
</center>
  </div>
</div>

controller/homes_controller.rb:

class HomesController < ApplicationController
     before_filter :authenticate_admin!,only: [:admin]
    def index

    end
    def admin

    end
    def managebooks
        @books=Book.new
        if params[:id]
            @books=Book.find(params[:id])
            @book=Book.all
        end
    end
    def savebooks
        @books=Book.new(params[:books])
        if @books.save
            flash[:notice]="Data has submitted successfully"
            flash[:color]="valid"
            redirect_to :action => 'managebooks',:id => @books.id
        else
            flash[:notice]="Data couldnot submitted successfully"
            flash[:color]="invalid"
            render 'managebooks'
        end
    end
    def remove
        @books=Book.find(params[:id])
        @books.destroy
    end
    def books

    end
    def showbooks
        @books=Book.all
    end
    def searchbooks
        @books=Book.all
    end
    def member

    end
    def registration
        @users=User.new
    end
    def savedata
        @users=User.new(params[:users])
        if @users.save
            flash[:notice]="Data has submitted successfully"
            flash[:color]="valid"
            redirect_to :action => 'member'
        else
            flash[:notice]="Data could not submitted successfully"
            flash[:color]="invalid"
            render 'registration'
        end
    end
end

model/users.rb

class User < ActiveRecord::Base
  attr_accessible :address, :email, :first_name, :last_name, :password, :password_hash, :password_salt, :tel_no ,:password_confirmation
  attr_accessor :password
  before_save :encrypt_password
 EMAIL_REGEX = /\A[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\z/i
 validates :email, :presence => true, :uniqueness => true, :format => EMAIL_REGEX
 validates :first_name, :presence => true, :length => {:in => 3..8}
 validates :last_name , :presence => true , :length => {:in => 3..10}
 validates :tel_no , :presence => true , :length => {:in => 1..10}
 validates :password, :confirmation => true
 validates_length_of :password, :in => 6..20, :on => :create
 def self.authenticate(email, password)
    user = find_by_email(email)
    if user && user.password_hash == BCrypt::Engine.hash_secret(password, user.password_salt)
      user
    else
      nil
    end
  end

  def encrypt_password
    if password.present?
      self.password_salt = BCrypt::Engine.generate_salt
      self.password_hash = BCrypt::Engine.hash_secret(password, password_salt)
    end
  end
end

db/migrate/20150311112733_create_users.rb

class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :first_name
      t.string :last_name
      t.string :email
      t.string :password
      t.string :tel_no
      t.string :address
      t.string :password_hash
      t.string :password_salt

      t.timestamps
    end
  end
end

Please check my above codes and try to help me to resolve my issue.I am using rails version-3.2.19 and ruby version-1.9.3.Thanks in advance.