ruby on rails - Data not getting saved to database from the form -

class usercontroller has following code:

 def create       @user = user.new(params[:user].permit(:userid,:password,:email))       render plain: params[:user].inspect+"||"+@user.inspect       #@user.save       #flash[:notice] = "you signed successfully"       #redirect_to @user   end 

the form has following code: (@user or :user, doesn't matter, output same)

<%= form_for :user, url:users_path |f| %> <%= f.label:userid %><%= f.text_field :userid %><br /> <%= f.label:password %><%= f.password_field :password %><br /> <%= f.label:email %><%= f.text_field :email %><br /> <br /> <%= f.submit %> <% end %> 

when fill form, output:

{"userid"=>"viky", "password"=>"123456", "email"=>"aa"}||#<user id: nil, userid: nil, password: nil, email: nil, created_at: nil, updated_at: nil> 

as can see, userid , password , email getting passed in params not appearing in @users, don't know why. , if type @users.save saves null row in database.

i guess permit syntax wrong

use : params.require(:user).permit(:userid,:password,:email)