Carlos Gómez carlosgomez2

Capybara Actions

# Anchor
click_link 'Save'

# Button
click_button 'awesome'

# Both above

Render and Redirect

The normal controller/view flow is to display a view template corresponding to the current controller action, but sometimes we want to change that. We use render in a controller when we want to respond within the current request, and redirect_to when we want to spawn a new request.

Render

The render method is very overloaded in Rails. Most developers encounter it within the view template, using render :partial => 'form' or render @post.comments, but here we'll focus on usage within the controller.

`:action`

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.

Stimulus cheatsheet

Website: https://stimulusjs.org/
GitHub repo: https://github.com/stimulusjs/stimulus
Handbook: https://stimulusjs.org/handbook/introduction
Discourse: https://discourse.stimulusjs.org/

Lifecycle callbacks

initialize: once, when the controller is first instantiated
connect: anytime the controller is connected to the DOM

Errors/Problems with Install

In attempting to install Ruby with rbenv, I ran into the following build failures:

BUILD FAILED (macOS 11.2.3 using ruby-build 20210423)

Inspect or clean up the working tree at /var/folders/58/16lnyx815c183j6wzcbl_thc0000gn/T/ruby-build.20210426232453.81982.XfAg0C
Results logged to /var/folders/58/16lnyx815c183j6wzcbl_thc0000gn/T/ruby-build.20210426232453.81982.log

Last 10 log lines:
 ^

	require 'nokogiri'
	require 'open-uri'

	# Get a Nokogiri::HTML:Document for the page we're interested in...

	doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove'))

	# Do funky things with it using Nokogiri::XML::Node methods...

	####

	require "bundler/inline"

	gemfile do
	source "https://rubygems.org"

	gem "activerecord", require: "active_record"
	gem "activejob", require: "active_job"
	gem "sqlite3"
	gem "searchkick", git: "https://github.com/ankane/searchkick.git"
	end

	stats = Sidekiq::Stats.new

	stats.queues

	stats.enqueued

	stats.processed

	stats.failed

	#!/usr/bin/env ruby

	# If you're not using rbenv in this script's dir, you may wanna run
	# these as `sudo gem install ruby-trello`, etc.
	['ruby-trello', 'dotenv'].each do \|gem_name\|
	begin
	gem gem_name
	rescue LoadError
	puts "Running `gem install #{gem_name}`..."
	puts "If this takes too long, you may want to run it manually, as `sudo` if needed."

	HTTP status code symbols for Rails

	Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

	Status Code Symbol
	1xx Informational
	100 :continue
	101 :switching_protocols
	102 :processing