RSpec is a testing framework for Ruby. This posts show how to create a rake task that executes rspec tests. RSpec tests will be running using command ‘rake spec’.
Ruby on Rails code architecture tips
A collection of tips about designing Rails application and making a better architecture.
Custom controller actions in ActiveAdmin (Ruby on Rails)
ActiveAdmin is a popular Ruby on Rails plugin for creating admin area. It helps developers solve many common problems to view/edit data as administrator. There are several other similar plugins, but I prefer ActiveAdmin because it allows developers to customize almost everything.
This post shows how to to add a custom action to an ActiveAdmin controller.
Custom slugs in Rails using gem Slugged
There are several gems to have slug in a model in Rails application: friendly_id, slugged and some others.
Loading “Seed” Data in Rails
A Rails application needs some data to exist in database before the application can be run. It is called ‘seed’ data.
This post shows how to create a rake task that loads ‘seed’ data. Data is stored in *.yml files.
Rails: clear old sessions stored in database
Sessions in Rails application can be stored in a database (as well as in cookies). I used to store session data in a table in database.
Sessions table may grow very large because Rails doesn’t have a built-in mechanism to clear old session data.
So you need to remove old sessions rows from database manually.
Rails 3 Nested Models in one form using Formtastic and Cocoon gems
This post shows how to handle nested models in one form with the parent model.
Showing images in GridView with multiple columns [Android]
This post shows how to get GridView with images and show images in multiple columns.
If you are looking for showing images in ListView – read this tutorial.
ListView with Images [Android]
This post shows how to get ListView with images using ArrayAdapter with custom objects.
In this example we will show a list of products with image and title in ListView.
Redirect from WWW to a non-WWW version of site in Rails
It is good practice to make your site available by both www.example.com and example.com URLs. But to prevent the duplication of pages (http://www.example.com/somepage/ and http://example.com/somepage are the same) we should have one version of URL (with WWW or without) and redirect from another version to the chosen one (from www to non-www or vice versa).