356 lines
9.6 KiB
HTML
356 lines
9.6 KiB
HTML
<!doctype html>
|
||
<html lang='en' class='no-js '>
|
||
<head>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<meta charset='utf-8'>
|
||
<meta content='width=device-width, initial-scale=1.0' name='viewport'>
|
||
<link href='./assets/favicon.png' rel='shortcut icon'>
|
||
<meta content='/rails-plugins.html' name='app:pageurl'>
|
||
|
||
|
||
<title>Rails plugins cheatsheet</title>
|
||
<meta content='Rails plugins cheatsheet' property='og:title'>
|
||
<meta content='Rails plugins cheatsheet' property='twitter:title'>
|
||
<meta content='article' property='og:type'>
|
||
|
||
|
||
|
||
<meta content='https://assets.devhints.io/previews/rails-plugins.jpg?t=20200705143936' property='og:image'>
|
||
<meta content='https://assets.devhints.io/previews/rails-plugins.jpg?t=20200705143936' property='twitter:image'>
|
||
<meta content='900' property='og:image:width'>
|
||
<meta content='471' property='og:image:height'>
|
||
|
||
|
||
|
||
<meta content="The one-page guide to Rails plugins: usage, examples, links, snippets, and more." name="description">
|
||
<meta content="The one-page guide to Rails plugins: usage, examples, links, snippets, and more." property="og:description">
|
||
<meta content="The one-page guide to Rails plugins: usage, examples, links, snippets, and more." property="twitter:description">
|
||
|
||
|
||
<link rel="canonical" href="https://devhints.io/rails-plugins">
|
||
<meta name="og:url" content="https://devhints.io/rails-plugins">
|
||
|
||
|
||
|
||
|
||
|
||
<meta content='Devhints.io cheatsheets' property='og:site_name'>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<meta content='Rails' property='article:section'>
|
||
|
||
|
||
|
||
|
||
|
||
<script async src='https://www.googletagmanager.com/gtag/js?id=UA-106902774-1'></script>
|
||
<script>
|
||
|
||
window.dataLayer=window.dataLayer||[];
|
||
function gtag(){dataLayer.push(arguments)};
|
||
gtag('js',new Date());
|
||
gtag('config','UA-106902774-1');
|
||
</script>
|
||
|
||
|
||
|
||
<meta property='page:depth' content='1'>
|
||
|
||
|
||
<script>(function(H){H.className=H.className.replace(/\bno-js\b/,'js')})(document.documentElement)</script>
|
||
<script>(function(H){H.className=H.className.replace(/\bNoJs\b/,'WithJs')})(document.documentElement)</script>
|
||
|
||
<script>(function(d,s){if(window.Promise&&[].includes&&Object.assign&&window.Map)return;var js,sc=d.getElementsByTagName(s)[0];js=d.createElement(s);js.src='https://cdn.polyfill.io/v2/polyfill.min.js';sc.parentNode.insertBefore(js, sc);}(document,'script'))</script>
|
||
|
||
<!--[if lt IE 9]><script src='https://cdnjs.cloudflare.com/ajax/libs/nwmatcher/1.2.5/nwmatcher.min.js'></script><script src='https://cdnjs.cloudflare.com/ajax/libs/json2/20140204/json2.js'></script><script src='https://cdn.rawgit.com/gisu/selectivizr/1.0.3/selectivizr.js'></script><script src='https://cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv.min.js'></script><script src='https://cdnjs.cloudflare.com/ajax/libs/respond.js/1.4.2/respond.js'></script><![endif]-->
|
||
|
||
<style>html{opacity:0}</style>
|
||
<link rel="stylesheet" href="./assets/2015/style.css?t=20200705143936">
|
||
<link href="./assets/style.css?t=20200705143936" rel="stylesheet" />
|
||
<link href="./assets/print.css?t=20200705143936" rel="stylesheet" media="print" />
|
||
</head>
|
||
<body>
|
||
<div class='all'>
|
||
|
||
<div class='site-header'>
|
||
<div class='container'>
|
||
This is <a href="."><em>Devhints.io cheatsheets</em></a> — a collection of cheatsheets I've written.
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<script type='application/ld+json'>
|
||
{
|
||
"@context": "http://schema.org",
|
||
"@type": "NewsArticle",
|
||
"mainEntityOfPage": {
|
||
"@type": "WebPage",
|
||
"@id": "https://google.com/article"
|
||
},
|
||
"headline": "Rails plugins cheatsheet",
|
||
"image": [ "https://assets.devhints.io/previews/rails-plugins.jpg?t=20200705143936" ],
|
||
"description": "The one-page guide to Rails plugins: usage, examples, links, snippets, and more."
|
||
}
|
||
</script>
|
||
<script type='application/ld+json'>
|
||
{
|
||
"@context": "http://schema.org",
|
||
"@type": "BreadcrumbList",
|
||
"itemListElement": [{
|
||
"@type": "ListItem",
|
||
"position": 1,
|
||
"item": {
|
||
"@id": "https://devhints.io/#rails",
|
||
"name": "Rails"
|
||
}
|
||
},{
|
||
"@type": "ListItem",
|
||
"position": 2,
|
||
"item": {
|
||
"@id": "https://devhints.io/rails-plugins",
|
||
"name": "Rails plugins"
|
||
}
|
||
}]
|
||
}
|
||
</script>
|
||
|
||
|
||
<div class='post-list -single -cheatsheet'>
|
||
<div class='post-item'>
|
||
<div class='post-headline -cheatsheet'>
|
||
<p class='prelude'><span></span></p>
|
||
<h1><span>Rails plugins</span></h1>
|
||
|
||
<div class='pubbox'>
|
||
<div class='HeadlinePub' role='complementary'>
|
||
<script async src='https://pubsrv.devhints.io/carbon.js?serve=CE7IK5QM&placement=devhintsio' id="_carbonads_js"></script>
|
||
<span class='placeholder -one'></span>
|
||
<span class='placeholder -two'></span>
|
||
<span class='placeholder -three'></span>
|
||
<span class='placeholder -four'></span>
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
<div class='post-content -cheatsheet'>
|
||
<h2 id="generate-a-plugin">Generate a plugin</h2>
|
||
|
||
<p>Generate a Rails Engine plugin:</p>
|
||
|
||
<pre><code>rails plugin new myplugin --skip-bundle --full
|
||
</code></pre>
|
||
|
||
<h2 id="initializers">Initializers</h2>
|
||
|
||
<ul>
|
||
<li><a href="http://edgeapi.rubyonrails.org/classes/Rails/Railtie.html">Rails::Railtie</a></li>
|
||
<li><a href="http://www.engineyard.com/blog/2010/extending-rails-3-with-railties/">EngineYard blog
|
||
post</a></li>
|
||
</ul>
|
||
|
||
<p>Subclass Railtie and provide an <code>initializer</code> method.</p>
|
||
|
||
<pre><code>module NewPlugin
|
||
class Railtie < Rails::Railtie
|
||
initializer "newplugin.initialize" do |app|
|
||
|
||
# subscribe to all rails notifications: controllers, AR, etc.
|
||
ActiveSupport::Notifications.subscribe do |*args|
|
||
event = ActiveSupport::Notifications::Event.new(*args)
|
||
puts "Got notification: #{event.inspect}"
|
||
end
|
||
|
||
end
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<h2 id="custom-routes">Custom routes</h2>
|
||
|
||
<ul>
|
||
<li><a href="http://api.rubyonrails.org/classes/ActionDispatch/Routing/Mapper.html">ActionDispatch::Routing::Mapper</a></li>
|
||
</ul>
|
||
|
||
<p>To create custom <code>routes.rb</code> keywords:</p>
|
||
|
||
<pre><code># # routes.rb:
|
||
# myplugin_for x
|
||
#
|
||
class ActionDispatch::Routing
|
||
class Mapper
|
||
def myplugin_for(*x)
|
||
end
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<p>Example with a block:</p>
|
||
|
||
<pre><code># authenticated do
|
||
# resources :users
|
||
# end
|
||
#
|
||
def authenticated
|
||
constraint = lambda { |request| request... }
|
||
|
||
constraints(constraint) { yield }
|
||
end
|
||
</code></pre>
|
||
|
||
<h2 id="custom-generators">Custom generators</h2>
|
||
|
||
<ul>
|
||
<li><a href="http://guides.rubyonrails.org/generators.html">Guide: generators</a></li>
|
||
<li><a href="http://api.rubyonrails.org/classes/ActiveRecord/Generators/Base.html">ActiveRecord::Generators::Base</a></li>
|
||
</ul>
|
||
|
||
<h3 id="basic">Basic</h3>
|
||
|
||
<pre><code># rails g initializer
|
||
# lib/generators/initializer_generator.rb
|
||
class InitializerGenerator < Rails::Generators::Base
|
||
def create_initializer_file
|
||
create_file "config/initializers/initializer.rb", "# Add initialization content here"
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<ul>
|
||
<li>Extend <code>Rails::Generators::Base</code>.</li>
|
||
<li>Each public method in the generator is executed when a generator is invoked.</li>
|
||
</ul>
|
||
|
||
<h3 id="generating-a-generator">Generating a generator</h3>
|
||
|
||
<pre><code>$ rails generate generator initializer
|
||
</code></pre>
|
||
|
||
<h3 id="namedbase">NamedBase</h3>
|
||
|
||
<p>Use <code>NamedBase</code> instead if you want to take an argument. It will be available as
|
||
<code>file_name</code>.</p>
|
||
|
||
<pre><code>class InitializerGenerator < Rails::Generators::Base
|
||
def lol
|
||
puts file_name
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<h3 id="more">More</h3>
|
||
|
||
<pre><code>class InitializerGenerator < Rails::Generators::NamedBase
|
||
#
|
||
source_root File.expand_path("../templates", __FILE__)
|
||
desc "Description goes here."
|
||
end
|
||
</code></pre>
|
||
|
||
<h3 id="generators-lookup">Generators lookup</h3>
|
||
|
||
<p>When invoking <code>rails g XXX</code>:</p>
|
||
|
||
<pre><code>[rails/]generators/XXX/XXX_generator.rb
|
||
[rails/]generators/XXX_generator.rb
|
||
</code></pre>
|
||
|
||
<p>When invoking <code>rails g XXX:YYY</code>:</p>
|
||
|
||
<pre><code>[rails/]generators/XXX/YYY_generator.rb
|
||
</code></pre>
|
||
|
||
<h2 id="activemodel-acts-as">ActiveModel ‘acts as’</h2>
|
||
|
||
<pre><code># yaffle/lib/yaffle/acts_as_yaffle.rb
|
||
module Yaffle
|
||
module ActsAsYaffle
|
||
extend ActiveSupport::Concern
|
||
|
||
included do
|
||
end
|
||
|
||
module ClassMethods
|
||
def acts_as_yaffle(options = {})
|
||
# your code will go here
|
||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
ActiveRecord::Base.send :include, Yaffle::ActsAsYaffle
|
||
</code></pre>
|
||
|
||
|
||
</div>
|
||
|
||
|
||
<ul class="social-list ">
|
||
<li class="facebook link hint--bottom" data-hint="Share on Facebook"><a href="https://www.facebook.com/sharer/sharer.php?u=https://devhints.io/rails-plugins.html" target="share"><span class="text"></span></a></li>
|
||
<li class="twitter link hint--bottom" data-hint="Share on Twitter"><a href="https://twitter.com/intent/tweet?text=The%20ultimate%20cheatsheet%20for%20Rails%20plugins.%20https://devhints.io/rails-plugins.html" target="share"><span class="text"></span></a></li>
|
||
|
||
</ul>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
<div class="about-the-site">
|
||
<div class="container">
|
||
<p class='blurb'>
|
||
<strong><a href=".">Devhints.io cheatsheets</a></strong> is a collection of cheatsheets I've written over the years.
|
||
Suggestions and corrections? <a href='https://github.com/rstacruz/cheatsheets/issues/907'>Send them in</a>.
|
||
<i class='fleuron'></i>
|
||
I'm <a href="http://ricostacruz.com">Rico Sta. Cruz</a>.
|
||
Check out my <a href="http://ricostacruz.com/til">Today I learned blog</a> for more.
|
||
</p>
|
||
|
||
|
||
<p class='back'>
|
||
<a class='big-button -back -slim' href='.#toc'></a>
|
||
</p>
|
||
|
||
|
||
<p>
|
||
</p>
|
||
</div>
|
||
</div>
|
||
|
||
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.5/highlight.min.js"></script>
|
||
|
||
|
||
|
||
|
||
<script src="https://cdn.rawgit.com/rstacruz/unorphan/v1.0.1/index.js"></script>
|
||
<script>hljs.initHighlightingOnLoad()</script>
|
||
<script>unorphan('h1, h2, h3, p, li, .unorphan')</script>
|
||
|
||
</body>
|
||
</html>
|
||
|