erb cheat sheet

file = "#{Rails.root}/public/users.csv"
headers = ["Name", "Company Name", "Email", "Role", "Team Name"]
CSV.open(file, 'w', write_headers: true, headers: headers) do |writer|
    Team.all.each do |team|
      team.users.each do |user|
        writer << [user.name, user.company_name , user.email, user.roles&.first&.name, team.name]
      end
    end
  end

# get "/articles?page=2"
request.original_url # => "http://www.example.com/articles?page=2"

namespace :javascript do
  desc "Compiles each js file"
  task validate: :environment do
    JS_PATH = "app/assets/javascripts/**/*.js"
    Dir[JS_PATH].each do |file_name|
      puts "\n#{file_name}"
      puts Uglifier.compile(File.read(file_name))
    end
  end
end

$ rake db:reset db:migrate

$ rake db:drop db:create db:migrate

When you want an optional belongs_to:


1) Just don't add in the field's migration
#migration_file_name.rb
#PLEASE DO NOT DO
null: false 

2) In the model use
#PLEASE DO
belongs_to :community, optional: true

  def search
    baseurl = "https://api.themoviedb.org/3/discover/movie?api_key=#{ENV['REACT_APP_TMDB_API_KEY']}&language=en-						US&sort_by=popularity.desc&with_watch_monetization_types=flatrate&include_adult=false&include_video		=false&page=${moviePageIndex}";
    urladdon = params[:urlAddon]

    require 'uri'
    require 'net/http'

    uri = URI("#{baseurl}#{urladdon}")
    res = Net::HTTP.get_response(uri)

    if res.is_a?(Net::HTTPSuccess)
      render json: res.body
    else
      render json: res.body, status: :bad_request
    end
  end

# Importing assets into the application layout (Asset Tags)
<%= stylesheet_link_tag "your_stylesheet" %>
<%= javascript_include_tag "your_javascript" %>
<%= image_tag "happy_cat.jpg" %>

<%# comment %> ?

<%= link_to "Sample Text", whichever_path %>

# With clas
<%= link_to "Sample Text", whichever_path, class: "my-btn" %>

# Passing params
link_to "Edit this post", edit_post_path(3) # don't hardcode 3!

# Or specify more params
post_path(3, :referral_link => "/some/path/or/something")

# Rendering partials
<%= render "user_form" %>
  # this will be from a file called _user_form.html.erb in app/views/users

# Passing variables to partials (using the locals "options hash")
<%= render partial: "shared/your_partial", :locals => { :user => user } %>
# Or
<%= render "shared/your_partial", :user => user %>
# If the partial name + the variable name are the same, use this shorthand notation
<%= render user %>
  
# To change the action of a Turbo Drive link, you can use data attributes inside of your Rails link tags
<%= link_tpo "Edit Post", edit_post_path(@post), data: { turbo_action: "replace" } %>
  # This will => <a href="..." data-turbo-action="replace">Edit Article</a>

# Change the HTTP Request Method of a Turbo link
<%= link_to "Delete Post", post_pat(@post), data: { turbo_method: "delete" } %>
  # This will => <a href="..." data-turbo-method="delete">Delete Article</a>

# Disable Turbo Drive
<div data-turbo="false"> # Disabled
  <%= link_to "foo", "bar" %> # Disabled
  <%= link_to "baz", "qux", data: { turbo: "true" } %> # Enabled
</div>

# original code found at
# https://github.com/forem/forem/blob/5e93d3a25ecc800703aa100d286c8c75c9173ddf/app/views/users/edit.html.erb#L63
  
 <% if current_user.email.blank? %>
  <div class="crayons-notice crayons-notice--warning mb-6" aria-live="polite">
    <h3 class="mb-2"><%= t("views.settings.complete.heading") %></h3>
    <p>
      <%= t("views.settings.complete.desc") %>
      <% if @user.twitter_username.blank? %>
        <%= t("views.settings.complete.twitter") %>
      <% elsif @user.github_username.blank? %>
        <%= t("views.settings.complete.github") %>
      <% end %>
    </p>
  </div>
<% end %>

<%= form_for :product do |f| %>
  <%= f.label :product_name, "Product name" %>
  <%= f.text_field :product_name, required: true %>
  <%= f.submit "Save" %>
<% end %>

# original code found at
# https://github.com/forem/forem/blob/5e93d3a25ecc800703aa100d286c8c75c9173ddf/app/views/users/edit.html.erb#L77

<% if @user.unconfirmed_email.present? %>
  <div class="crayons-notice crayons-notice--warning mb-6" role="alert">
    <h3 class="mb-2"><%= t("views.settings.email") %></h3>
    <p><%= t("views.settings.finalize_html", email: link_to(@user.unconfirmed_email, "mailto:#{@user.unconfirmed_email}")) %></p>
  </div>
<% end %>

# with aria-live
<% flash.each do |msg| %>
  <p aria-live="polite" aria-atomic="true"><%= msg %></p>
<% end %>
 
# with role
<% flash.each do |msg| %>
  <p role="status"><%= msg %></p>
<% end %>

<%= image_tag "rails.png", alt: "Alternative text" %>

<%= inline_svg_tag('icon.svg',
    aria: true,
    title: 'An SVG',
    desc: 'This is my SVG. There are many like it. You get the picture')
%>