Inserting images in markdown posts
If you want to insert an image inside a markdown body, you can do it with:
Example:
Invoking ActiveRecord::Migration functions in command line
If you need for some weird reason, to run migration commands in your rails console, just do the following:
ActiveRecord::Migration.add_index :table, :col, name: 'col_index'
THE MEANING AND POWER OF WORDS (ONLINE)
If the interpretation of messages in an oral face-to-face conversation is too subjective —even with clear tones of voice and body language— imagine when communicating through a screen! We have to be assertive AF! I believe that to be assertive through texts messages we need to consider WRITING RULES such as spelling (correct use of punctuation marks, accents, and capital letters), syntax (the way in which words and the groups they form are combined to express meanings, as well as the relationships established between all these units), and semantics (the meaning and changes in the meaning of words and expressions). To the point> Semantically speaking, it is important to consider that there are two divisions in this area: denotation and connotation. The denotation: This is the original or formally accepted expression of the word, this is the word that is formally found in encyclopedic dictionaries and is universally accepted. Connotation: Connotation is the alternate or secondary form in which a word is used, such as is the case with the word donkey, which in denotative form implies the equine type animal, and in the connotative form the dumb man or person. Get it? So, we have to be super conscious of the meaning and power of the words we choose when having written conversations. Is like: the connotation of the words OCUPO and NECESITO could be similar, but the correct thing to say, because of the denotation of the words, is NECESITO QUE ME AYUDES ME ACORREGIR ESTE CODIGO. It is better that way so we don't misunderstand things. And if so, nothing better than talking to eliminate misunderstandings, right? Talking-communicating is the best way to understand each other, the best way to organize ourselves. It is good to be sincere and direct. But, we must try to be assertive. And, in my opinion, there is a fine line between being assertive, sincere, or direct > and rude. To be assertive the message must get through to the receiver correctly, otherwise, it's not.
Make your docker images safer!
Use docker scan <your image> to detect vulnerabilities easily! (JUst patch them after!)
Turbo Native wrappers are generally available and working well
I've been waiting for updates to this technology for a long time and today found out that it's already available.
The website is here: https://turbo.hotwire.dev/handbook/native
And there's a cool blog post about it here: https://blog.minthesize.com/turbo-native
Optional Chaining in JavaScript
The Optional Chaining Operator ? allows you to read the value of a property located deep within an object without having to validate each property in the object. It works in a similar way than the chaining operator ., except that instead of causing an error if a reference is nullish, the expression will return a value of undefined.
A common way to validate properties was to do something like this:
const player = {
stats: {
stamina: 40
}
}
let stamina
if (player && player.stats) {
stamina = player.stats.stamina
}
This was done because calling player.stats.stamina directly could led into an error being thrown if stats didn't exists, and sometimes even the execution would stop.
Using the Optional Chaining Operator, we could do something like this:
const player = {
stats: {
stamina: 40
}
}
const stamina = player.stats?.stamina
The result is shorter and simpler, and in case stats didn't exists the value would be undefined, without an error being thrown.
Remove Rails model's fields without crashing on production
If you are experiencing problems after removing an attribute from a Rails model it is probably because ActiveRecord has cached that field, it is something normal is intended to help to improve performance on production environments but when removing a field may cause errors because Rails is training to read/writer a column that doesn't exist anymore, so for Rails 5 and newest we have the ignore_columns setting to fix this issue, simply add it to your model something like:
class MyModel < ApplicationRecord
self.ignore_columns = %w[field_to_ignore]
end
And you are good to go! if you want to be warned or remind to your team you would like to consider using the strong migrations gem https://github.com/ankane/strong_migrations
Heroku console (IRB) with no "multiline"
If you need to paste a script in the Heroku console (IRB) with multiple lines and you notice it's very slow to finish pasting all the code, you can use the --nomultiline tag to disable multiline and let you run your script faster
heroku run 'bundle exec rails c -- --nomultiline'
Native Pub/Sub in Rails with ActiveSupport::Notifications
If you want to use pub/sub design pattern inside your rails app, there's no need to add extra dependencies, you can use ActiveSupport::Notifications to do the job
Example:
class Order
# methods
def complete
update(complted_at: Time.zone.now, etc: 'some')
ActiveSupport::Notifications.instrument("order_completed", { number: order.number })
end
end
module Subscribers
class SendConfirmationEmail
def self.subscribe!
ActiveSupport::Notifications.subscribe("order_completed") do |_name, _start, _finish, _id, params|
order = Order.find_by number: params[:number]
OrderMailer.confirm_order(order).deliver_later
end
end
end
end
module Subscribers
class UpdateCustomerCRM
def self.subscribe!
ActiveSupport::Notifications.subscribe("order_completed") do |_name, _start, _finish, _id, params|
order = Order.find_by number: params[:number]
CrmIntegration.update_customer(order.customer.email, order.total_amount)
end
end
end
end
# etc
Rails find_by using relationships
If you want to find records via a relationship you can do it easily:
product = Product.joins(:variants).find_by(variants: { sku: 'SKU' }
Instead of:
product = Variant.find_by(sku: 'SKU')&.product
Measuring memory utilization
Ruby comes with the cool module Benchmark, but the only downside is that it only provides the time taken for each task.
A simple approach to get how many memory the ruby process is consuming is to call: ps -o rss:
memory_before = `ps -o rss= -p #{$$}`.to_i
Utils.heavy_memory_consumming_process
memory_after = `ps -o rss= -p #{$$}`.to_i
puts "The process took #{memory_after - memory_before} KB"
Change the starting point for your ordered lists.
Use the start attribute to change the starting point for your ordered lists.
<ol start="10">
<li>Git</li>
<li>Ruby</li>
<li>JS</li>
<li>PostgreSQL</li>
<li>CSS</li>
<li>HTML</li>
</ol>
Output:
10. Git
11. Ruby
12. JS
13. PostgreSQL
14. CSS
15. HTML
THE HOOK IS IN EXPERIENCE
When working with brands, yep, its image and its communication are essential. But, TODAY I LEARNED: EXPERIENCE IS THE REAL HOOK!! People will forget what you say, people will forget what you do, but they will never forget HOW YOU MAKE THEM FEEL!!! Right???
In life, sometimes I tend to observe and analyze stuff that would help me to improve something, especially at work. There is a local fashion brand I used to follow (as a fan, I must say) because -besides their clothes are cute- I loved their branding and how they work with their social media communication. Well, I am working with my own fashion brand and I tend to look at the mentioned one as a visual reference. But I wanted to know how their logistics works and I tried to buy something to learn about it, BUT THE EXPERIENCE WAS TERRIBLE! They made me feel ignored and even stupid with their election of some words...
I must say this post is not about talking sh** about a brand and complain about it. Is about expose a case so we can understand why EXPERIENCE is the real value. Even if you have the most beautiful, luxurious, good vibing brand, if you gave a negative experience YOU WILL LOST a follower and probably A CLIENT!
Consumers will transmit their experience: positive or negative. It could become viral and have a huge impact. So, if you really want to capitalize with it, GIVE THE BEST EXPERIENCE EVER TO YOUR AUDIENCE! You could even create brand ambassadors by doing it!
xoxo
Editing a file using cat
If you have to modify a file because any editor is present (vi, vim, nano, etc). you can use cat to do it:
$ cat > filename.ext
write or paste the content
ctrl+d
And that would be it! Super helpful when debugging flaky tests that only fail in the CI server
Create a Pull Request from the CLI
In 2020 GitHub launched its CLI.
Among many other wonders, it allows you to create a PR from the command line.
Using it is exceedingly easy!
First, install it
$ brew install gh
Then, authenticate
$ gh auth login
Finally, create a PR with
$ gh pr create
If your repo has a PR template, it will make use of it.