Android ?

Android ………Will post in details soon..

ri and rdoc in Ruby On Rails

To install ri and rdoc of any gem,

gem install gemname

This command installs ri and rdoc with installation of gem.

To skip the installation of ri and rdoc of gem,

gem install gemname –no-ri –no-rdoc

This command will skip the installation of ri and rdoc when installing gem.

remote_function or link_to_remote with multiple parameters in Ruby on Rails

We can pass the multiple parameters with remote_function or link_to_remote…

<%= link_to_remote "View Data",
:url => :action => "list",
:with => " 'name=' +$('div-id-of-name-text-box').value + '&city=' +$('div-id-of-city-text-box').value + '&country=' +$('div-id-of-country-text-box').value " %>

or

<%= remote_function(:url => :action => "list",
:with => " 'name=' +$('div-id-of-name-text-box').value + '&city=' +$('div-id-of-city-text-box').value + '&country=' +$('div-id-of-country-text-box').value " ) %>

Git – create git branch

Create new branch “demo” as,

1) git branch demo

This will create local branch “demo”

2) git checkout demo

This will switched to that branch

3) make some changes in that code, then,

git add <files>
git commit -m "<your message>"

4) git push origin demo

This will create new remote branch “demo” on github.

5) If you want someone to checkout the code from “demo” branch, then do following,

git clone <git-path>

then,

git checkout --track -b demo origin/demo

Now, you are in “demo” branch.

select with :onchange in Ruby on Rails

In Ruby on Rails, We can use ‘select’ with nchange as following code block,

= f.select :my_attribute, @my_values.collect{|a| [a.name, a.id]}, {}, { nChange => 'remote_function(blabla....)' }