Accessors can be hard to understand for new developers. 

In this article i will try to explain how they work and when to use them.

In simple words CQRS is dividing the reading part of the model from the writing part.

Instead of one, we have 2 models with different responsibilities.

Value Object is quite popular design pattern, but it can be messy to implement it well.

This is my implementation of value objects. 

Sometimes raising error is not enough. As probably you know, you can use command like this:

raise ActiveModel::StrictValidationFailed, "Some message"

This command will return 500 error on your website + it will log into your console the name of the error and message you passed in.

But it won't give you any context. This is big problem if for example you call API and your response is bad.
You want to know, what is happening there directly.

Fortunately there is some solution for it.

Today i've suffered some issue with a SSH key. I've tried to clone my repository from Gitlab.com.

Unfortunately i've received an error:

Permission denied (publickey,keyboard-interactive)

I've thought, i have problem with a SSH key. Unfortunately, adding a SSH key did not resolve the problem.

How to resolve it?

Elasticsearch is just an amazing search engine with a lot of flexibility.

You can think, that working with this tool is very hard, but actually, it is not.

Today I will show you, how to use Elasticsearch through the Searchkick gem.