Luján Fernaud lujanfernaud

Rails: Test datetime_select using Capybara

# test_helper.rb

def select_date_and_time(date, **options)
  return nil unless date
  
 field = options[:from]

Testing Image Attachments/Uploads in Rails

Model

We need to use File.open(Rails.root.join("<image_path>")).

File.open(Rails.root.join("test/fixtures/files/sample.jpeg"))

Rolify: Remove All Roles For User In a Specific Resource

We find all roles assigned to the user in the resource, a group in this case.

@user.roles.where(resource: @group)

=> [#<Role:0x00000004a80580
 id: 24,

Rails and Pundit: Custom Redirection When Not Authorized

To use a custom redirection when a resource is not authorized we only need to add an user_not_authorized method to the controller, and define the redirection.

Example:

class Groups::MembershipRequestsController < ApplicationController
  def new
 @membership_request = MembershipRequest.new

Running a Rails 5 App in Production Locally

This is what we need to do:

export RAILS_ENV=production
rake db:reset
rake assets:precompile
RAILS_SERVE_STATIC_FILES=true
SECRET_KEY_BASE=production rails s

Ruby and Nokogiri: Removing trailing spaces

sample_input = "<div>Hi&nbsp; &nbsp; &nbsp;</div>"
parsed_input = Nokogiri::HTML.parse(sample_input).text #=> "Hi   "

parsed_input.gsub(/\p{Space}*\z/, "") #=> "Hi"

\p{Space} catches any whitespace character.

Rails: Migrations

Add reference:

# add_reference :table, :column_name, foreign_key: boolean
add_reference :bookings, :flight, foreign_key: true

Add index:

Rails: Random Date in Period

def random_date_in_period(period)
  rand(period).seconds.ago
end

random_date_in_period 1.year #=> Tue, 22 May 2018 04:55:54 UTC +00:00
random_date_in_period 1.year #=> Mon, 06 Nov 2017 19:50:07 UTC +00:00

	inherit_from: ../.rubocop.yml

	# Checks if uses of quotes match the configured preference.
	Style/StringLiterals:
	Enabled: false

	# We need to use 'remote_<object>_url' as attribute instead of '<object>'.
	# Having Image, we would use 'remote_image_url: <url>'.

	titles = [Faker::RockBand.name, Faker::BossaNova.artist, Faker::Book.title]

	54.times do \|n\|
	start_date = Faker::Date.between(1.day.from_now, 6.months.from_now)
	end_date = start_date + 1.day

	Event.create!(title: titles.sample + " ##{n}",