735 lines
57 KiB
HTML
735 lines
57 KiB
HTML
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<h1 class='h1'>StimulusReflex <em>cheatsheet</em></h1>
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<h3 id="via-data-attributes">via Data Attributes</h3>
|
||
|
||
<p>Trigger reflexes without writing any javascript with the <code>data-reflex</code> attribute.</p>
|
||
|
||
<h4 id="indexhtmlerb">index.html.erb</h4>
|
||
|
||
<pre><code class="language-html"><a
|
||
href="#"
|
||
data-reflex="click->CounterReflex#increment"
|
||
data-step="1"
|
||
data-count="<%= @count.to_i %>"
|
||
>Increment <%= @count.to_i %></a
|
||
>
|
||
</code></pre>
|
||
|
||
<h4 id="counter_reflexrb">counter_reflex.rb</h4>
|
||
|
||
<pre><code class="language-ruby">class CounterReflex < StimulusReflex::Reflex
|
||
def increment
|
||
@count = element.dataset[:count].to_i + element.dataset[:step].to_i
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<h3 id="from-stimulusjs-controller">from Stimulus.js Controller</h3>
|
||
|
||
<p>Stimulus.js controllers registered with StimulusReflex can use the <code>stimulate</code> method to trigger reflexes</p>
|
||
|
||
<h4 id="indexhtmlerb-1">index.html.erb</h4>
|
||
|
||
<pre><code class="language-html"><a href="#"
|
||
data-controller="counter"
|
||
data-action="click->counter#increment"
|
||
>Increment <%= @count %></a>
|
||
</code></pre>
|
||
|
||
<h4 id="counter_controllerjs">counter_controller.js</h4>
|
||
|
||
<pre><code class="language-javascript">import { Controller } from 'stimulus'
|
||
import StimulusReflex from 'stimulus_reflex'
|
||
|
||
export default class extends Controller {
|
||
connect() {
|
||
StimulusReflex.register(this)
|
||
}
|
||
|
||
increment(event) {
|
||
event.preventDefault()
|
||
this.stimulate('Counter#increment', 1)
|
||
}
|
||
}
|
||
</code></pre>
|
||
|
||
<h4 id="counter_reflexrb-1">counter_reflex.rb</h4>
|
||
|
||
<pre><code class="language-ruby">class CounterReflex < StimulusReflex::Reflex
|
||
def increment(step = 1)
|
||
session[:count] = session[:count].to_i + step
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<h2 id="morphs">Morphs</h2>
|
||
|
||
<h3 id="selector-morphs">Selector morphs</h3>
|
||
|
||
<p>Instead of refreshing the entire page, you can specify a portion of the page to update with <code>morph(selector, content)</code></p>
|
||
|
||
<pre><code class="language-html"><!-- show.html.erb -->
|
||
<header data-reflex="click->Example#change">
|
||
<%= render partial: "path/to/foo", locals: {message: "Am I the medium or the massage?"} %>
|
||
</header>
|
||
</code></pre>
|
||
|
||
<pre><code class="language-html"><!-- _foo.html.erb -->
|
||
<div id="foo">
|
||
<span class="spa"><%= message %></span>
|
||
</div>
|
||
</code></pre>
|
||
|
||
<pre><code class="language-ruby"># example_reflex.rb
|
||
class ExampleReflex < ApplicationReflex
|
||
def change
|
||
morph "#foo", "Your muscles... they are so tight."
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<h3 id="nothing-morph">Nothing morph</h3>
|
||
|
||
<p>Use <code>morph :nothing</code> in reflexes that do something on the server without updating the client.</p>
|
||
|
||
<pre><code class="language-ruby"># example_reflex.rb
|
||
class ExampleReflex < ApplicationReflex
|
||
def change
|
||
LongRunningJob.perform_later
|
||
morph :nothing
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<h2 id="lifecycle">Lifecycle</h2>
|
||
|
||
<h3 id="server-side-callbacks">Server-side callbacks</h3>
|
||
|
||
<p>Reflex classes can use the following callbacks. <a href="http://docs.stimulusreflex.com/lifecycle#server-side-reflex-callbacks">Full Docs</a></p>
|
||
|
||
<ul>
|
||
<li><code>before_reflex</code></li>
|
||
<li><code>around_reflex</code></li>
|
||
<li><code>after_reflex</code></li>
|
||
</ul>
|
||
|
||
<h3 id="client-side-callbacks-generic">Client-side callbacks (generic)</h3>
|
||
|
||
<p>StimulusReflex controllers automatically support five generic lifecycle callback methods.</p>
|
||
|
||
<ul>
|
||
<li><code>beforeReflex(element, reflex, noop, reflexId)</code> prior to sending a request over the web socket</li>
|
||
<li><code>reflexSuccess(element, reflex, noop, reflexId)</code> after the server side Reflex succeeds and the DOM has been updated</li>
|
||
<li><code>reflexError(element, reflex, error, reflexId)</code> whenever the server side Reflex raises an error</li>
|
||
<li><code>reflexHalted(element, reflex, noop, reflexId)</code> reflex canceled with throw :abort in the before_reflex callback</li>
|
||
<li><code>afterReflex(element, reflex, noop, reflexId)</code> after both success and error</li>
|
||
<li><code>finalizeReflex(element, reflex, noop, reflexId)</code> after both success and error</li>
|
||
</ul>
|
||
|
||
<h3 id="client-side-callbacks-custom">Client-side callbacks (custom)</h3>
|
||
|
||
<p>StimulusReflex controllers can define up to five custom lifecycle callback methods for each Reflex action. These methods use a naming convention based on the name of the Reflex. e.g. for the <code>add_one</code> reflex:</p>
|
||
|
||
<ul>
|
||
<li><code>beforeAddOne(element, reflex, noop, reflexId)</code></li>
|
||
<li><code>addOneSuccess(element, reflex, noop, reflexId)</code></li>
|
||
<li><code>addOneError(element, reflex, error, reflexId)</code></li>
|
||
<li><code>addOneHalted(element, reflex, noop, reflexId)</code></li>
|
||
<li><code>afterAddOne(element, reflex, noop, reflexId)</code></li>
|
||
<li><code>finalizeAddOne(element, reflex, noop, reflexId)</code></li>
|
||
</ul>
|
||
|
||
<h3 id="client-side-events">Client-side events</h3>
|
||
|
||
<p>If you need to know when a Reflex method is called, but you’re working outside of the Stimulus controller that initiated it, you can subscribe to receive DOM events</p>
|
||
|
||
<ul>
|
||
<li><code>stimulus-reflex:before</code></li>
|
||
<li><code>stimulus-reflex:success</code></li>
|
||
<li><code>stimulus-reflex:error</code></li>
|
||
<li><code>stimulus-reflex:halted</code></li>
|
||
<li><code>stimulus-reflex:after</code></li>
|
||
</ul>
|
||
|
||
<p>There are also events related to the StimulusReflex library setting up and connecting to ActionCable</p>
|
||
|
||
<ul>
|
||
<li><code>stimulus-reflex:connected</code></li>
|
||
<li><code>stimulus-reflex:disconnected</code></li>
|
||
<li><code>stimulus-reflex:rejected</code></li>
|
||
<li><code>stimulus-reflex:ready</code></li>
|
||
</ul>
|
||
|
||
<h2 id="helpful-tips">Helpful tips</h2>
|
||
|
||
<h3 id="forms">Forms</h3>
|
||
|
||
<p>If a Reflex is called on a form element - or a child of that form element - then the data for the whole form will be properly serialized and made available to the Reflex action method as the <code>params</code> accessor. <a href="http://docs.stimulusreflex.com/working-with-forms">Read more</a></p>
|
||
|
||
<h3 id="promises">Promises</h3>
|
||
|
||
<p><code>stimulate()</code> method returns a promise</p>
|
||
|
||
<pre><code class="language-javascript">this.stimulate('Comments#create')
|
||
.then(() => this.doSomething())
|
||
.catch(() => this.handleError())
|
||
</code></pre>
|
||
|
||
<h3 id="inheriting-data-attributes-from-parent-elements">Inheriting data-attributes from parent elements</h3>
|
||
|
||
<p>You can use the <code>data-reflex-dataset="combined"</code> directive to scoop all data attributes up the DOM hierarchy and pass them as part of the Reflex payload.</p>
|
||
|
||
<pre><code class="language-html"><!-- new.html.erb -->
|
||
<div data-post-id="<%= @post.id %>">
|
||
<div data-category-id="<%= @category.id %>">
|
||
<button data-reflex="click->Comment#create" data-reflex-dataset="combined">Create</button>
|
||
</div>
|
||
</div>
|
||
</code></pre>
|
||
|
||
<pre><code class="language-html"># comment_reflex.rb
|
||
class CommentReflex < ApplicationReflex
|
||
def create
|
||
puts element.dataset["post-id"]
|
||
puts element.dataset["category-id"]
|
||
end
|
||
end
|
||
</code></pre>
|
||
|
||
<h3 id="reflex-root">Reflex root</h3>
|
||
|
||
<p>Instead of updating your entire page, you can specify exactly which parts of the DOM will be updated using the <code>data-reflex-root</code> attribute. <a href="http://docs.stimulusreflex.com/morph-modes#scoping-page-morphs">Full docs</a></p>
|
||
|
||
<pre><code class="language-text"><!-- index.html.erb -->
|
||
<div data-reflex-root="[forward],[backward]">
|
||
<input type="text" value="<%= @words %>" data-reflex="keyup->Example#words">
|
||
<div forward><%= @words %></div>
|
||
<div backward><%= @words&.reverse %></div>
|
||
</div>
|
||
</code></pre>
|
||
|
||
<pre><code class="language-ruby"># example_reflex.rb
|
||
def words
|
||
@words = element[:value]
|
||
end
|
||
</code></pre>
|
||
|
||
<h3 id="permanent-elements">Permanent elements</h3>
|
||
|
||
<p>Add data-reflex-permanent to any element in your DOM, and it will be left unchanged by full-page Reflex updates and morph calls that re-render partials.</p>
|
||
|
||
<pre><code class="language-erb"><!-- index.html.erb -->
|
||
<div data-reflex-permanent>
|
||
<iframe src="https://ghbtns.com/github-btn.html?user=hopsoft&repo=stimulus_reflex&type=star&count=true" frameborder="0" scrolling="0" class="ghbtn"></iframe>
|
||
<iframe src="https://ghbtns.com/github-btn.html?user=hopsoft&repo=stimulus_reflex&type=fork&count=true" frameborder="0" scrolling="0" class="ghbtn"></iframe>
|
||
</div>
|
||
</code></pre>
|
||
|
||
<h3 id="aborting-a-reflex">Aborting a reflex</h3>
|
||
|
||
<p>call <code>raise :abort</code> within a reflex method to cancel it.</p>
|
||
|
||
<pre><code class="language-ruby"># comment_reflex.rb
|
||
class CommentReflex < ApplicationReflex
|
||
def create
|
||
raise :abort
|
||
end
|
||
end
|
||
</code></pre>
|
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|
||
<abbr class='attribute-peg -new-layout hint--bottom' data-hint='New layout!'><span></span></abbr>
|
||
|
||
</span>
|
||
</a>
|
||
</li>
|
||
|
||
|
||
<li class='item related-post-item'>
|
||
<a href='./vimscript'>
|
||
<strong>Vim scripting</strong>
|
||
<span>
|
||
cheatsheet
|
||
|
||
|
||
<abbr class='attribute-peg -new-layout hint--bottom' data-hint='New layout!'><span></span></abbr>
|
||
|
||
</span>
|
||
</a>
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
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||
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||
|
||
|
||
|
||
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|
||
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