Changing session to database based in Rails 3

-

In config/initializers/session_store.rb:


Comments

Post a Comment

Popular posts from this blog

Difference between rake db:migrate db:reset and db:schema:load

-
db:migrate   runs (single) migrations that have not run yet. db:create   creates the database db:drop   deletes the database db:schema:load   creates tables and columns within the (existing) database following schema.rb db:setup   does db:create, db:schema:load, db:seed db:reset   does db:drop, db:setup   Normally, db:migrate used after having made changes to the schema via new migration files after creating db i.e when db already exists. db:schema:load is used when you setup a new instance of your app.
Read more

Modulo operation in Ruby

-
Today I was stumped by a very simple yet awesome problem by my friend Sandip What is the answer of   :  7 % -2  and to the surprise ruby irb printed it as :  -1  After some research I what I found about this and why here is explanation and links From Ruby Programming Language, O,really   Division, Modulo, and Negative Numbers When one (but not both) of the operands is negative, Ruby performs the integer division and modulo operations differently than languages like C, C++, and Java do (but the same as the languages Python and Tcl). Consider the quotient -7/3. The floating-point result is –2.33. The result of integer division must be an integer, however, so this number must be rounded. Ruby rounds toward negative infinity and returns –3. C and related languages round toward zero instead and return –2. (This is just one way to characterize the results; no floating-point division is actually done, of course.) An important corollary of...
Read more

rails 3.2 with jruby and mysql with rvm in ubuntu

-
If was trying to migrate one of the app from ruby to jrby to try out the threading benifits. this wasn't an easy task :D well the gem dependency did not create a big issue. the problem came when connecting to mysql with jdbc driver I had replaced  gem 'mysql2' with   gem 'activerecord-jdbcmysql-adapter' in Gemfile But it refused to load the driver saying : "The driver encountered an unknown error: cannot load Java class com.mysql.jdbc.Driver' I searched but Google could not answer me :( then I started looking into activerecord-jdbsmysl-adapter gem and came upon the the file  activerecord-jdbc-adapter / activerecord-jdbcmysql-adapter / lib / active_record / connection_adapters /jdbcmysql_adapter.rb  I just copy pasted the code in a application.rb config with a condition if jruby used just after the bundler code if defined?(JRUBY_VERSION)   require 'jdbc/mysql'   Jdbc::MySQL.load_d...
Read more