Add a :link_to_or_disabled helper method

app/helpers/link_helper.rb

@@ -1,6 +1,29 @@
 # frozen_string_literal: true
 
 module LinkHelper
+  def link_to_or_disabled(name = nil, options = nil, html_options = nil, &block)
+    html_options, options, name = options, name, block if block_given?
+    html_options ||= {}
+
+    if !!html_options.delete(:disabled)
+      # https://www.scottohara.me/blog/2021/05/28/disabled-links.html
+      html_options.merge!(
+        'aria-disabled': true,
+        class: (html_options[:class].to_s.split + ["disabled"]).uniq.join(" "),
+        role: "link"
+      )
+      if block_given?
+        content_tag("a", name, **html_options, &block)
+      else
+        content_tag("a", name, **html_options)
+      end
+    elsif block_given?
+      link_to options, html_options, &block
+    else
+      link_to name, options, html_options
+    end
+  end
+
   def link_to_service(baseurl, name, html_options = {}, &)
     return if name.blank?
 

app/views/spree/orders/form/_cart_links.html.haml

@@ -1,5 +1,3 @@
 .row.links
-  %a.continue-shopping.button.secondary{ @insufficient_stock_lines.any? ? { disabled: "disabled" } : { href: current_shop_products_path } }
-    = t :orders_edit_continue
-  %a#checkout-link.button.primary.right{ @insufficient_stock_lines.any? ? { disabled: "disabled" } : { href: main_app.checkout_path } }
-    = t :orders_edit_checkout
+  = link_to_or_disabled t(:orders_edit_continue), current_shop_products_path, class: "continue-shopping button secondary", disabled: @insufficient_stock_lines.any?
+  = link_to_or_disabled t(:orders_edit_checkout), main_app.checkout_path, class: "button primary right", disabled: @insufficient_stock_lines.any?, id: "checkout-link"

app/webpacker/css/admin_v3/components/buttons.scss

@@ -182,6 +182,10 @@ a.button {
   text-decoration: none;
 }
 
+a[aria-disabled] {
+  pointer-events: none;
+}
+
 .button.disruptive::before {
   margin-right: 3px;
 

spec/helpers/link_helper_spec.rb

@@ -9,4 +9,25 @@ RSpec.describe LinkHelper do
       expect(helper.ext_url("http://example.com/", "bla")).to eq("http://example.com/bla")
     end
   end
+
+  describe "link_to_or_disabled" do
+    it "behaves like the standard :link_to method e.g. it accepts the same arguments and accepts
+        blocks, etc." do
+      expect(helper.link_to_or_disabled("Go", "http://example.com/")).to eq(
+        "<a href=\"http://example.com/\">Go</a>"
+      )
+      expect(helper.link_to_or_disabled("Go", "http://example.com/", class: "button")).to eq(
+        "<a class=\"button\" href=\"http://example.com/\">Go</a>"
+      )
+      expect(helper.link_to_or_disabled("http://example.com/") { "Go" }).to eq(
+        "<a href=\"http://example.com/\">Go</a>"
+      )
+    end
+
+    it "accepts an additional boolean :disabled argument, which if true renders a disabled link" do
+      expect(helper.link_to_or_disabled("Go", "http://example.com/", disabled: true)).to eq(
+        "<a aria-disabled=\"true\" class=\"disabled\" role=\"link\">Go</a>"
+      )
+    end
+  end
 end