request not entering into the controller action - ruby-on-rails

Question

i have been trying this from long time but not getting what is the mistake that i am doing,
here is my controller
class UsersController < ApplicationController
puts "before"
def create
puts "hiiiiiiiiiiiiiiiiii"
puts params
User.create(:birthday=> params["dateOfBirth"],:email=> params["emailId"])
end
puts "after"
end
and here is my routes
post '/sign_up', :to => "users#create"
this is giving me a 200 OK response code but not actually entering into the method "create" and storing the values in databse
it is priting "before" and "after" but not "hiiiiii"
looks like i am doing some silly mistake but need help to get it done
thanks.!
This is how i am doing query from client side.
$.ajaxSetup({
beforeSend: function(xhr) {
xhr.setRequestHeader('X-CSRF-Token', $('meta[name="csrf-token"]').attr('content'));
}
});
var registration = function(){
var user = {
firstname : $("#firstname").val(),
lastname : $("#lastname").val(),
emailId : $("#email").val(),
password : $("#psw").val(),
dateOfBirth : $("#birthday").val() };
$.post("/sign_up", user, function(data){
console.log(data);
},'json');
};

Answer 1

For really good debug pupposes use gem rails-pry. Add gem 'pry-rails' to your gemfile, run 'bundle install'. Now you can add 'binding.pry' to any place of your code, and when your app reach this line you will have a full access to this code from console. It's better than use 'puts'.
For your In you case it would be:
class UsersController < ApplicationController
puts "before"
def create
binding.pry
User.create(:birthday=> params["dateOfBirth"],:email=> params["emailId"])
end
puts "after"
end
Run application, open your browser and go to url. Than open console and you will be 'inside' create action
UPDATE
Look at my example, I've created it and all works good
Model: User.rb
class User < ActiveRecord::Base
attr_accessible :city, :email, :gender, :name
end
Controller: UsersController.rb
def create
binding.pry
#user = User.new(params[:user])
session[:user] = #user
respond_to do |format|
if #user.save
format.html { redirect_to users_path, notice: 'User was successfully created.' }
format.json { render json: #user, status: :created, location: #user }
else
format.html { render action: "new" }
format.json { render json: #user.errors, status: :unprocessable_entity }
end
end
end
users.js:
$(function() {
$.ajaxSetup({
beforeSend: function(xhr) {
xhr.setRequestHeader('X-CSRF-Token', $('meta[name="csrf-token"]').attr('content'));
}
});
var registration = function(){
alert('a');
var user = {
name : $("#name").val(),
city : $("#city").val(),
gender : $("#gender").val()
};
$.post("/sign_up", user, function(data){
console.log(data);
},'json');
}
$('#but').click(registration);
});
new.html.erb:
<form>
<input id="name">
<input id="city">
</form>
<button id="but">create</but>
routes.rb:
resources :users
post '/sign_up', :to => "users#create"
root :to => 'users#new'
I run application, fill form, open console -> I'm in create action