Disable buttons in table actions when pressed

By default, Rails disables submit inputs (<input type="submit">) when
they're pressed so we avoid a double-submission when users click the
button twice.

However, Rails does not disable submit buttons (<button type="submit">)
when they're pressed. This means there's a chance users might press the
button several times. Even if most our table actions are idempotent, it
might cause certain issues. For instance, pressing the "Delete" button
twice means the second request might raise an
`ActiveRecord::RecordNotFound` exception.

Disabling the button also gives feedback to users, letting them know
they've correctly clicked the button.

app/assets/stylesheets/admin/action.scss

@@ -0,0 +1,6 @@
+.admin .admin-action {
+
+  &[disabled] {
+    @include button-disabled;
+  }
+}

app/components/admin/action_component.html.erb

@@ -1,4 +1,4 @@
-<% if options[:method] && options[:method] != :get %>
+<% if button? %>
   <%= button_to(path, html_options) { text } %>
 <% else %>
   <%= link_to text, path, html_options %>

app/components/admin/action_component.rb

@@ -10,6 +10,10 @@ class Admin::ActionComponent < ApplicationComponent
 
   private
 
+    def button?
+      options[:method] && options[:method] != :get
+    end
+
     def text
       options[:text] || t("admin.actions.#{action}")
     end
@@ -22,12 +26,15 @@ class Admin::ActionComponent < ApplicationComponent
       {
         class: html_class,
         "aria-label": label,
-        data: { confirm: confirmation_text }
+        data: {
-      }.merge(options.except(:"aria-label", :confirm, :path, :text))
+          confirm: confirmation_text,
+          disable_with: (text if button?)
+        }
+      }.merge(options.except(:"aria-label", :class, :confirm, :path, :text))
     end
 
     def html_class
-      "#{action.to_s.gsub("_", "-")}-link"
+      "admin-action #{options[:class] || "#{action.to_s.gsub("_", "-")}-link"}".strip
     end
 
     def label

spec/components/admin/action_component_spec.rb

@@ -1,10 +1,19 @@
 require "rails_helper"
 
 describe Admin::ActionComponent do
-  it "includes an HTML class for the action" do
+  describe "HTML class" do
+    it "includes an HTML class for the action by default" do
       render_inline Admin::ActionComponent.new(:edit, double, path: "/")
 
-    expect(page).to have_css "a.edit-link"
+      expect(page).to have_css "a.edit-link.admin-action"
+    end
+
+    it "keeps the admin-action class when the class is overwritten" do
+      render_inline Admin::ActionComponent.new(:edit, double, path: "/", class: "modify-link")
+
+      expect(page).to have_css "a.modify-link.admin-action"
+      expect(page).not_to have_css ".edit-link"
+    end
   end
 
   describe "aria-label attribute" do
@@ -105,4 +114,18 @@ describe Admin::ActionComponent do
       end
     end
   end
+
+  describe "data-disable-with attribute" do
+    it "is not rendered for links" do
+      render_inline Admin::ActionComponent.new(:edit, double, path: "/")
+
+      expect(page).not_to have_css "[data-disable-with]"
+    end
+
+    it "is rendered for buttons" do
+      render_inline Admin::ActionComponent.new(:hide, double, path: "/", method: :delete)
+
+      expect(page).to have_css "button[data-disable-with='Hide']"
+    end
+  end
 end