Safe navigation operator in Ruby

Ruby 2.3 has introduced safe navigation operator. Safe navigation operator returns nil if a method is called on a nil object. Before this, if a method is called on a nil object, it throws an error as given below.

»
Author's profile picture Akshay Mohite on Ruby |

Use find_each instead of all.each in Rails

In Rails, sometimes we need to iterate over all the records from a model. To achieve this people prefer to use all.each on a model. This can lead to usage of memory if there are millions (huge number of) records in the table.

»
Author's profile picture Akshay Mohite on Rails |

Array comparison in ruby

I was working on a problem to check on a large array of integers to check whether it is a part of another array or not. Both the arrays have unique elements, but not in sorted order. So there are multiple ways possible to this, but I was not sure that which approach is most efficient. I searched for this but couldn’t come across anything valuable. Then I decided to benchmark whole approach by my self.

»
Author's profile picture Gaurav Singh on Ruby |

Ruby do not use keys method on a hash in loop

Today, I was looking at the internal working of a gem. While working on the same, I came across the code where the network calls were being made and it had to check if the response params has some set of keys.

»
Author's profile picture Akshay Mohite on Ruby |

Google Cloud HTTPs load balancing with Letsencrypt certificate

To setup HTTPs load balancer on Google Cloud Platform , we need to create an SSL certificate beforehand. Letsencrypt can be used to create an SSL certificate free of cost. The SSL certificate provided by Letsencrypt is valid for 3 months. In this article, we will learn how to setup HTTPs load balancing using Letsencrypt certificate for a Ruby on Rails application on Google Cloud Platform.

»
Author's profile picture Akshay Mohite on Devops |

Asynchronous Programming in Ruby

In traditional programming practice, I/O operations happen synchronously. The main thread will be blocked until I/O operation gets completed and CPU remains idle for the time I/O operation is getting completed. Consider the following example where CPU is blocked until query execution completed.

»
Author's profile picture Gaurav Singh on Ruby |

Devise model custom field updates with Rails

Devise gem helps in creating User Authentication layer for the Ruby on Rails applications. The other day, I was taking a session on Hackhands to resolve a query from a Ruby on Rails developer. The developer had added an enum attribute role on the users table. The query was how to update custom attribute added to users table generated by devise gem.

»
Author's profile picture Akshay Mohite on Rails |

Rails 5.2 introduces Active Storage for File Uploads

DHH [Creator of Rails] has recently announced Active Storage as a built in support for file uploads. Active Storage is targeted to be released with Rails 5.2. The development has been started on Github in ActiveStorage repository. It is started as a separate repository for now. This ActiveStorage is eventually planned to be merged in Rails repository.

»
Author's profile picture Akshay Mohite on Rails |

Rails 5 Pluck query changes over Rails 4

Rails 5 has improved the way query was done on database when pluck was called on a model. Before Rails 5, when pluck was called, it used to query database even if the activerecord collection is queried before. There are some posts explaining don’t pluck unnecessarily In this post we will discuss how Rails 5 has improved the way pluck used to work.

»
Author's profile picture Akshay Mohite on Rails |

Rails 5 Google Maps API included multilpe times error resolution

While working on integrating Google Map with the Rails 5 application, faced an error saying

»
Author's profile picture Akshay Mohite on Rails |

Exception Notification with Ruby on Rails and Slack Notifier

In Rails, exception_notification is popular gem used for Exception Notification to email. Slack is a new tool which is very popular among teams for collaboration. This article will help us understand the way to configure exception_notifier gem to send notifications to your Slack channel from Ruby on Rails application.

»
Author's profile picture Akshay Mohite on Rails |

How to Integrate Material UI with Rails

Google has released Material UI. Since then, Material UI is getting a lot of attraction from Designers and Developers around the world. This article will help you create Material UI application in Rails.

»
Author's profile picture Akshay Mohite on Rails |

Rails Slack Integration with Slack Notifier gem

In this article we will learn how to integrate slack with Rails applications using slack-notifier. Slack is a messaging app for teams. Slack comes with integration services with tools such as Github, Airbrake, Jenkins, Bitbucket and there are many. You can visit Slack services page for full details.

»
Author's profile picture Akshay Mohite on Rails |

What is new in Rails 5 (Features + Changes)

This article will discuss what is new in Rails 5. The changes like rails instead of rake, ruby 2.2.1+ support, performance improvements, action cable, rails api application will be discussed.

»
Author's profile picture Akshay Mohite on Rails |

Rescue nil in Ruby on Rails

Ruby on Rails developers use rescue nil to get default value if particular expression evaluation fails. rescue nil is bad, very bad in terms of performance. We will learn why it’s bad and what should be used in order to achieve the same result

»
Author's profile picture Akshay Mohite on Rails |