如何在Rails（Devise gem）中查看当前密码？

Question

I'm failing to check current password using jQuery validation. I'm using Devise gem and jQuery validation. Firebug says:

the problem is in my controller :

def checkpass
 user = User.find_by_email(params[:user][:email])
 respond_to do |format|
 if user && user.authenticate(params[:user][:password])
    format.json { render :json => @user }
 end

end

 406 Not Acceptable

end

 def checkemail
  @user = User.find_by_email(params[:user][:email])
   respond_to do |format|
   format.json { render :json => !@user }
  end
end

My js:

$("#edit_password").validate({
   "user[current_password]":{
            required: true,
            minlength: 6,
            remote: {
          url: "http://127.0.0.1:3000/checkpass"
          }
 ...
 })

and HTML:

   <input type="password" size="30" name="user[current_password]" id="user_current_password" class="valid">

Can someone suggest how to do it ?

Answer 1

I am using rails version 4 and when I tried doing user.authenticate I got error saying unknown methods, so I found the other method for checking if password is valid,

valid_password?(current_password)

I thought to share it so it might help someone else as well.

Answer 2

in the controller in function check_pass

  user = User.find_by_email(params[:user][:email])
  respond_to do |format|
     if user && user.authenticate(params[:user][:password])
        format.json { render :json => @user }
     end
  end

Answer 3

Password is not stored in plain text format it's a salted hash,so user can't find using password.

You can authenticate password is valid or not so salted hash work like

• crypted string = plaintext(password)+hashing algo(encrypt)

• some random string(salt) +crypted string then checked for match You can use warden.authenticate or authenticate (check docs) method on user to verify password