Thursday, September 24, 2009

Table Sorting Jquery Plugin


I was wondering how to sort a table. I got this plugin & did it in 10 mins.

Here is an useful plugin in jquery,

Reference URL :

Table sorting is pretty much easier using this tablesorter plugin.


Monday, September 14, 2009

MySQL Change root Password

Source :

mysqladmin command to change root password

If you have never set a root password for MySQL, the server does not require a password at all for connecting as root. To setup root password for first time, use mysqladmin command at shell prompt as follows:

$ mysqladmin -u root password NEWPASSWORD

However, if you want to change (or update) a root password, then you need to use following command

$ mysqladmin -u root -p'oldpassword' password newpass

For example, If old password is abc, and set new password to 123456, enter:

$ mysqladmin -u root -p'abc' password '123456'

Change MySQL password for other user

To change a normal user password you need to type (let us assume you would like to change password for vivek):

$ mysqladmin -u vivek -p oldpassword password newpass

Changing MySQL root user password using MySQL sql command

This is another method. MySQL stores username and passwords in user table inside MySQL database. You can directly update password using the following method to update or change password for user vivek:

1) Login to mysql server, type following command at shell prompt:

$ mysql -u root -p

2) Use mysql database (type command at mysql> prompt):

mysql> use mysql;

3) Change password for user vivek:

mysql> update user set password=PASSWORD("NEWPASSWORD") where User='vivek';

4) Reload privileges:

mysql> flush privileges;
mysql> quit

Recover Mysql Password


Sunday, September 6, 2009

Polymorphic Association

Reference :

Example :

restful routes:

map.resources :users
map.resources :groups

Model Relation:

class Post < ActiveRecord::Base
belongs_to :owner, :polymorphic => true

class User < ActiveRecord::Base
has_many :posts, :as => :owner

class Group
has_many :posts, :as => :owner

Now, let’s say that when you show a post, you want to provide a link to the owner of the post when you display it on its show page. You know that because you’ve provided the restful routes in your config/routes.rb file as show above, you get the nice functionality of the user_path and the group_path methods. The problem is that because you don’t know if @post.owner is a user or a group.

<%= link_to, polymorphic_path(@post.owner) %>

Documentation :