Sunday 20 October 2013

New finding / Rails

Rails runner


 runs Ruby code in the context of Rails non-interactively.

eg.   Rails runner 'puts Account.some_method_name'   or

       Rails r 'puts Account.some_other_method'
 
 

How  to check for database name from Rails console ?


eg.   ModelName.connection.current_database

       Account.connection.current_database

Difference b/w :dependent => :destroy, :dependent => :delete


  :dependent => :destroy
     When a parent is deleted, ActiveRecord load every dependent record and calls a destroy on it.

  :dependent => :delete
     is called ActiveRecord issues a single SQL delete statement for the parent record's children.

 

How to restrict from generating default routes



1.  resources  :accounts, only: [ ]

2. resources  :accounts, only: :none

and in case you would like to have one action(buy) then
   resources :accounts, only: [:buy]



check for keyCode && which & keyup || keydown

$(document).keydown(function(e){
   var code = e.keyCode ? e.keyCode : e.which;
   alert(code);
});



Replace single quote with backslash single quote


puts "Cote d'Ivoir".gsub("'", %q(\\\')) #=> Cote d\'Ivoir

How to make entire td a link?



   td a {
    display: block;
    width: 100%;
    height: 100%;
  }



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