Fix the Book FormComponent to save publisher_id.

lib/decentralised_book_index_web/live/book_live/form_component.ex

@@ -36,7 +36,7 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
           />
           <.input field={@form[:page_count]} type="number" label="Page count" />
           <div>
-            <.label>Publisher</.label>
+            <.input field={@form[:publisher_id]} type="text" label="Publisher" type="hidden" />
             <.selected_publisher
               publisher_form={@form[:publisher_id]}
               notify_component={@myself}
@@ -66,7 +66,7 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
           />
           <.input field={@form[:page_count]} type="number" label="Page count" />
           <div>
-            <.label>Publisher</.label>
+            <.input field={@form[:publisher_id]} type="text" label="Publisher" type="hidden" />
             <.selected_publisher
               publisher_form={@form[:publisher_id]}
               notify_component={@myself}