Ruby on Rails


Jul 11, 2020
2 comments
827
Suppose you want to remove a 'comments' table from a blog application. You can do so by performing the following tasks from the command line (e.g., Terminal). Step one: $ rails console Step two: $ ActiveRecord::Migration.drop_table(:c...
Issue 1 - Error in installing pg gem Installing pg 0.19.0 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /home/luke/.rvm/gems/ruby-2.4.1/gems/pg-0.19.0/ext /home/luke/.rvm/rub...
When you change any of your javascripts or stylesheets in the production environment, you need to run rake assets:precompile; this task compiles and compresses the various .js and .css files and creates the application.js and application.css files...
Introduction Often when developing apps with Rails you need to set up environment variables to keep sensitive information secure in your code. This article looks at how to set up environment config variables in Rails. We’ll look at why we need to...
In your application controller file app/controllers/application_controller.rb include the following private method: class ApplicationController < ActionController::Base private # Overwriting the sign_out redirect path method de...
Apr 16, 2016
1 comments
1.15K
A scaffold in Rails is a full set of model, database migration for that model, controller to manipulate it, views to view and manipulate the data, and a test suite for each of the above. To generate a scaffold for a blog use the rails gener...
Apr 06, 2016
5 comments
770
Generate a controller rails generate controller "controller name" "action1 action2 action3" Delete a controller rails destroy controller "controller name" Create Model and Migration rails generate model "model name" This g...
Install the rbenv and Ruby dependencies sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties l...
Development Install Ruby Install DevKit (http://rubyinstaller.org/downloads/) gem install capistrano --no-ri --no-rdoc Deployment Machine Update the software sources list And upgrade the dated applications: aptitude update aptitud...