Update the Book form to select publisher via the components.

lib/decentralised_book_index_web/live/book_live/form_component.ex

@@ -33,7 +33,10 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
             label="Language"
           />
           <.input field={@form[:page_count]} type="number" label="Page count" />
-          <.input field={@form[:publisher_id]} type="text" label="Publisher" />
+          <.selected_publisher
+            publisher_form={@form[:publisher_id]}
+            notify_component={@myself}
+          />
           <.input
             field={@form[:published]}
             type="date"
@@ -57,7 +60,10 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
             label="Language"
           />
           <.input field={@form[:page_count]} type="number" label="Page count" />
-          <.input field={@form[:publisher_id]} type="text" label="Publisher" />
+          <.selected_publisher
+            publisher_form={@form[:publisher_id]}
+            notify_component={@myself}
+          />
           <.input
             field={@form[:published]}
             type="date"
@@ -74,6 +80,21 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
           </.cancel_button>
         </:actions>
       </.simple_form>
+
+      <.modal
+        :if={@select_publisher_open? == true}
+        id="select-publisher-modal"
+        show
+        on_cancel={JS.push("close-select-publisher", target: @myself)}
+      >
+        <.live_component
+          id="select-publisher"
+          module={SelectPublisher}
+          action={:edit}
+          current_user={@current_user}
+          notify_component={@myself}
+        />
+      </.modal>
     </div>
     """
   end
@@ -252,6 +273,7 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
     {:ok,
      socket
      |> assign(assigns)
+     |> assign(:select_publisher_open?, false)
      |> assign_form()}
   end
 
@@ -315,4 +337,32 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
        _    -> ~p"/books"
     end
   end
+
+  def handle_event("select-publisher", %{"publisher" => publisher_id}, socket) do
+    socket =
+      socket
+      |> update(:form, fn form ->
+        form
+        |> AshPhoenix.Form.update_params(&Map.put(&1, "publisher_id", publisher_id))
+      end)
+      |> assign(:select_publisher_open?, false)
+
+    {:noreply, socket}
+  end
+
+  def handle_event("open-select-publisher", _params, socket) do
+    socket =
+      socket
+      |> assign(:select_publisher_open?, true)
+
+    {:noreply, socket}
+  end
+
+  def handle_event("close-select-publisher", _params, socket) do
+    socket =
+      socket
+      |> assign(:select_publisher_open?, false)
+
+    {:noreply, socket}
+  end
 end