lorenadl

How to add a new SSH Key to GitLab

Generate the public/private key pair

First of all check if the system already has a SSH key:

• Windows command line:

  type %userprofile%\.ssh\id_rsa.pub

• Linux command:

lorenadl

Rails Active Storage how to restrict uploadable file types

Active Storage doesn't have validations yet.

We can restrict the accepted file types in the form:

<div class="field">
  <%= f.label :deliverable %>
 &lt;%= f.file_field :deliverable, direct_upload: true, 

lorenadl

Add password expiration feature to Devise

Assuming you already have a Devise model named User and you want to add following Devise Security Extension to it:

• Password Expirable
• Password Archivable
• Session Limitable

Add gem and run the generator

lorenadl

Rails download an Active Storage attachment in local disk

For master branch of rails/rails (http://edgeguides.rubyonrails.org/active_storage_overview.html#downloading-files):

message.video.open do |file|
  system '/path/to/virus/scanner', file.path
  # ...
end

lorenadl

index: true vs foreign_key:true in migration

In migration:

create_table :educations do |t| 
  t.belongs_to :profile, index: true, foreign_key: true
end

Index improve speed of data retrieval operations on database tables. When we write index: true to any column, it adds a database index to this column.

lorenadl

Building an autocomplete drop-down list with Ruby on Rails

https://medium.com/@topspinj/country-drop-down-list-92e6f3552f58

https://select2.org/

Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.

The select2-rails gem integrates the Select2 jQuery plugin with the Rails asset pipeline.

lorenadl

Notes from "Clean Architecture" - Robert C. Martin

Part I: Introduction

What is design and architecture

"Architecture" is often used in the context of something at a high level, whereas "design" more often seems to imply structures and decisions at lower level. But this usage is nonsensical. In software design the low-level details and the high-level stucture are all part of the same whole, there is a continuum of decisions from the highest to the lowest levels.

lorenadl

How I can turn off HyperV Container features so that I can use Virtual Box and then turn them back on to use Docker for Windows

Source: https://stackoverflow.com/questions/47081205/simple-instructions-needed-for-enabling-and-disabling-hyper-v-docker

You can do below to disable:

dism.exe /Online /Disable-Feature:Microsoft-Hyper-V
bcdedit /set hypervisorlaunchtype off

lorenadl

Rails app with Yarn and Webpack workflow

http://g3ortega.com/rails/2017/05/30/rails-5-1-and-forward-yarn-on-rails.html

https://evilmartians.com/chronicles/evil-front-part-1

RVM install Ruby 2.5.1

$ rvm install 2.5.1

lorenadl

RVM: create .ruby-version and .ruby-gemset

rvm --ruby-version use 2.5.1@test_app --create