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Directories on host machine:

• /data/certbot/letsencrypt

• /data/certbot/www

• Nginx server in docker container

docker run -d --name nginx \

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Issue with Carrierwave, ImageMagick (or MiniMagick) with processing svg files

Problem:

When uploading svg file with Carrierwave you may get an error:

Failed to manipulate with MiniMagick, maybe it is not an image? 
Original Error: `identify /tmp/mini_magick20190222-32759-1g7lnmy.svg` failed with error:

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Webpack in Rails

All code is available in example app - https://github.com/maxivak/webpacker-rails-example-app

Table of Contents

• NPM and Yarn
• Webpack and Webpacker

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Date time picker in Rails app

There are several options to make Date input in Rails application:

• Default inputs from simple_form
• HTML 5 date input
• Text input with jQuery UI Date time picker
• Other plugins for date input with Bootstrap 4

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• Globalize adds model translations to ActiveRecord models.
• Audited is an ORM extension that logs all changes to your models.

Using Audited gem it will only logs changes to the base model and ignore changes to the translation table.

Below is how to add audited to the translation model.

Audited and Globalize

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Error logging

• log errors

  • on disk on server

• notify errors

  • notify to slack or email or using other system

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Web site checklist

• Web site checklist

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Rails app in Docker

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Bootstrap 4 tabs (or pills) rendered underline.

• SASS:

_pills_underline_varibles.scss - edit styles using variables

$nav-pills-underline-link-active-color: $link-color !default;
$nav-pills-underline-link-hover-color: $link-hover-color !default;

$nav-pills-underline-bg:    transparent !default;

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Load lib files in production (Rails 5)

If you have your code defined in classes in lib/ folder you may have problems to load that code in production.

Autoloading is disabled in the production environment by default because of thread safety.

Change config/application.rb:

    config.autoload_paths << Rails.root.join("lib")
 config.eager_load_paths &lt;&lt; Rails.root.join("lib")