Posts

Recently reading some posts about ruby, I found myself with this exciting method called lazy. This method will help us when looping over some objects: Array, Hashes, and Files. If you want to loop through a huge array, and we only want to select the first 20 elements that evaluate our criteria, this is the kind of job for our lazy method.

Recently I was playing around with my local database in my Rails project deployed using Heroku. Eventually, I screwed up and had to delete all the data. I use rake db: reset and rake db:create`, but how would I populate the data again?

Rails make it extremely easy to send emails. I’m not going to explain how to do it; there are pretty good tutorials around the internet, this one is well explained: Action Mailer Basics.

While working on a rails project recently, I stepped on an error that said: PG::Error: ERROR: column “number” must appear in the GROUP BY clause or be used in an aggregate function`,

In a rails project I’m working on, I was trying to select from the database some sales with some conditions. Here is the Sale model: class Sale < ActiveRecord::Base belongs_to :voucher belongs_to :client has_many :line_items, dependent: :destroy has_many :bills end So the goal of the task was to obtain all the Sales where the LineItems has express_checkout set it to true.

I’m new to Octopress platform for Blogging, but I think it is excellent and straightforward. Creating my first post, I felt so excited, similar to when you discover a new treasure or secret path in my favourite game.

While doing some exercises in the book Learn to Program by Chris Pine, trying to rename some files I noticed a strange functionality as part of some exercise that was renaming pictures from a folder.