Add the partials and navbar.

lib/decentralised_book_index_web.ex

@@ -89,6 +89,7 @@ defmodule DecentralisedBookIndexWeb do
       import Phoenix.HTML
       # Core UI components
       import DecentralisedBookIndexWeb.CoreComponents
+      use DecentralisedBookIndexWeb.Components.MyPartials
 
       # Shortcut for generating JS commands
       alias Phoenix.LiveView.JS

lib/decentralised_book_index_web/components/my_partials.ex

@@ -0,0 +1,9 @@
+defmodule DecentralisedBookIndexWeb.Components.MyPartials do
+  alias DecentralisedBookIndexWeb.Components.MyPartials
+
+  defmacro __using__(_) do
+    quote do
+      import MyPartials.Navbar, only: [partial_navbar: 1]
+    end
+  end
+end

lib/decentralised_book_index_web/components/my_partials/navbar.ex

@@ -0,0 +1,49 @@
+defmodule DecentralisedBookIndexWeb.Components.MyPartials.Navbar do
+  use Phoenix.Component
+  use DecentralisedBookIndexWeb, :verified_routes
+  alias Phoenix.LiveView.JS
+
+  attr(:page_title, :string, required: true)
+
+  def partial_navbar(assigns) do
+    ~H"""
+    <nav class="bg-white border-gray-200 px-4 lg:px-6 py-2.5 dark:bg-gray-800">
+        <div class="flex flex-wrap justify-between items-center mx-auto max-w-screen-xl">
+            <a href={~p"/"} class="flex items-center">
+                <svg class="w-6 h-6 text-gray-800 dark:text-white" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="none" viewBox="0 0 24 24">
+                    <path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.03v13m0-13c-2.819-.831-4.715-1.076-8.029-1.023A.99.99 0 0 0 3 6v11c0 .563.466 1.014 1.03 1.007 3.122-.043 5.018.212 7.97 1.023m0-13c2.819-.831 4.715-1.076 8.029-1.023A.99.99 0 0 1 21 6v11c0 .563-.466 1.014-1.03 1.007-3.122-.043-5.018.212-7.97 1.023"/>
+                </svg>
+
+                <span class="self-center text-xl font-semibold whitespace-nowrap dark:text-white">DBI</span>
+            </a>
+            <div class="flex items-center lg:order-2">
+                <a href={~p"/sign-in"} class="text-gray-800 dark:text-white hover:bg-gray-50 focus:ring-4 focus:ring-gray-300 font-medium rounded-lg text-sm px-4 lg:px-5 py-2 lg:py-2.5 mr-2 dark:hover:bg-gray-700 focus:outline-none dark:focus:ring-gray-800">Sign in</a>
+                <button data-collapse-toggle="mobile-menu-2" type="button" class="inline-flex items-center p-2 ml-1 text-sm text-gray-500 rounded-lg lg:hidden hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-600" aria-controls="mobile-menu-2" aria-expanded="false">
+                    <span class="sr-only">Open main menu</span>
+                    <svg class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 15a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1z" clip-rule="evenodd"></path></svg>
+                    <svg class="hidden w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path></svg>
+                </button>
+            </div>
+            <div class="hidden justify-between items-center w-full lg:flex lg:w-auto lg:order-1" id="mobile-menu-2">
+                <ul class="flex flex-col mt-4 font-medium lg:flex-row lg:space-x-8 lg:mt-0">
+                    <li>
+                        <a href={~p"/books/"} class={selected_navbar_link_css(@page_title, "Listing Books")} aria-current="page">Books</a>
+                    </li>
+                    <li>
+                        <a href={~p"/authors/"} class={selected_navbar_link_css(@page_title, "Listing Authors")} aria-current="page">Authors</a>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </nav>
+    """
+  end
+
+  defp selected_navbar_link_css(page_title, active_title) do
+    if active_title =~ page_title do
+      "block py-2 pr-4 pl-3 text-black dark:text-white rounded bg-primary-700 lg:bg-transparent lg:text-primary-700 lg:p-0 dark:text-white"
+    else
+      "block py-2 pr-4 pl-3 text-gray-700 border-b border-gray-100 hover:bg-gray-50 lg:hover:bg-transparent lg:border-0 lg:hover:text-primary-700 lg:p-0 dark:text-gray-400 lg:dark:hover:text-white dark:hover:bg-gray-700 dark:hover:text-white lg:dark:hover:bg-transparent dark:border-gray-700"
+    end
+  end
+end