Finally im able to create a simple web application using ruby with sinatra,sequel, postgres.
Please download from link below and extract it
this sample using postgresql database with a table , userlogin to store user and password.
CREATE TABLE userlogin ( id bigserial primary key, userid text NOT NULL, passwd text NOT NULL, fullname text NOT NULL, email text NOT NULL DEFAULT ''::text, active text DEFAULT 'Y'::text ); insert into userlogin ( userid,passwd,fullname) select 'admin','admin','administrator';
to start the web app do as follow

web server is listening on port 4567
fire up your browser to localhost:4567

after login success will go to home page

change password screen is simple

We can run it on jruby too. On jruby install pg_jruby gem instead of pg/postgres gem. And also dont forget to install puma gem too.

thats it !
good night ….
Selamat Hari Raya.