Freeze and Unfreeze Rails application
Ruby on Rails allows you to “freeze” the version of Rails used by your application. When you freeze Rails, your … Continue reading Freeze and Unfreeze Rails application
Password protecting folders or resource with Nginx
All you need to do is add the following two entries in the location listing in the server conf settings … Continue reading Password protecting folders or resource with Nginx
Ruby on Rails Application Workflow
How to fix “Bad URI (is not URI?)”
This URL contains special characters, which Ruby can’t handle: URI.parse ‘http://www.yr.no/sted/Finland/Västra_Finland/Askainen/varsel.xml’ URI::InvalidURIError: bad URI(is not URI?): http://www.yr.no/sted/Finland/Västra_Finland/Askainen/varsel.xml 3 from /usr/local/lib/ruby/1.8/uri/common.rb:436:in … Continue reading How to fix “Bad URI (is not URI?)”
Javascript Include Tag Best Practice in a Rails Application
Code in Layout: <head> <title>Merry Christmas!</title> <%= yield(:head) %-> </head> Code in View: <%- content_for(:head) do -%> <%= javascript_include_tag :defaults … Continue reading Javascript Include Tag Best Practice in a Rails Application
Difference Between Gem and Plugin
Now a days many developers are developing web application using ruby on rails. But a few of them know what … Continue reading Difference Between Gem and Plugin
Learn Ruby – Procs, Blocks, Lambda
Procs and Blocs is the part of Ruby which is not clear to many. This post should help you clear … Continue reading Learn Ruby – Procs, Blocks, Lambda
Content preview using javascript
Javascript Code: function previewWindow(id) { var win = window.open(null, “PreviewWindow”, “width=610, scrollbars=1”); var c = document.getByElementID(id).innerHTML; win.document.writeln(“<html><head><link rel=’stylesheet’ type=’text/css’ href=’/stylesheets/global.css’ … Continue reading Content preview using javascript
Set / Change / Reset the MySQL root password on Ubuntu Linux
Tested on – Ubuntu Linux 9.10 and MySQL 5.0 Set / change / reset the MySQL root password on Ubuntu … Continue reading Set / Change / Reset the MySQL root password on Ubuntu Linux
Keyboard shortcut keys in Ubuntu Linux.
For shortcut key lovers, here is a long list of keyboard shortcuts for Ubuntu Linux. Enjoy the list. General keyboard … Continue reading Keyboard shortcut keys in Ubuntu Linux.
What’s New in Edge Rails: UTC-based Migration Versioning
When you create any migration you’ll see something like this: > script/generate migration one create db/migrate/20080402122512_one.rb Rails generate migration number … Continue reading What’s New in Edge Rails: UTC-based Migration Versioning
What makes Ruby on Rails on top?
An extremely productive web-application framework. Written in Ruby by David Heinemeier Hansson. You could develop a web application at least … Continue reading What makes Ruby on Rails on top?
Rails: Route Globbing (Building dynamic urls)
Consider the example, suppose you want to build url such as http://localhost:3000/maps/Europe/Italy/Milan in this case http://localhost:3000/maps/ this path is common … Continue reading Rails: Route Globbing (Building dynamic urls)
Some useful linux commands.
1. Recursive Permission for directory and all its sub-directories chmod -R 777 directory_name* Value Permission Directory Listing 0 No read, … Continue reading Some useful linux commands.
Google Crome for Linux Operating System!
A fast new browser: Now available for Linux. Google Chrome runs web pages and applications with lightning speed. Just chick … Continue reading Google Crome for Linux Operating System!
7 great ad server solutions.
Rails sort_by and group_by
sort_by @posts.sort_by(&:date).each do |post| puts post end group_by @tasks = {} TaskList.find(:all).group_by(&:type) do |type, subtasks| @tasks[type] = subtasks.group_by(&:name) end Continue reading Rails sort_by and group_by
observe_field in Ruby on Rails (another way to use ajax)
Code in View: function serialize_fields(){ var fields = new Array(); fields.push(Form.Element.serialize(‘content_node_name’)); fields.push(Form.Element.serialize(‘content_node[destination_id]’)); fields.push(Form.Element.serialize(‘content_node[parent_id]’)); fields.push(Form.Element.serialize(‘cont_id’)); return fields.join(‘&’); } <%= observe_field “content_node_name”, … Continue reading observe_field in Ruby on Rails (another way to use ajax)
How to validate all text fields from form using javascript?
// order_content_node it is an form name function validateAllTextfields() { for(i=0; i<document.order_content_node.elements.length; i++) { element = document.order_content_node.elements[i]; if (element.type == … Continue reading How to validate all text fields from form using javascript?
Simple example for link_to_remote in Rails (One way to use Ajax in Rails)
In View: This below javascript to get the current values from form such as content node name, destination, and parent … Continue reading Simple example for link_to_remote in Rails (One way to use Ajax in Rails)
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