Add the author roles to the Book form.

lib/decentralised_book_index/metadata/author_role.ex

@@ -12,7 +12,7 @@ defmodule DecentralisedBookIndex.Metadata.AuthorRole do
   end
 
   actions do
-    defaults [:read, :update, :destroy]
+    defaults [:read, :destroy]
 
     create :create do
       primary? true
@@ -20,7 +20,8 @@ defmodule DecentralisedBookIndex.Metadata.AuthorRole do
       argument :author_id, :uuid
 
       change fn changeset, _ ->
-        author_id = changeset.arguments.author_id
+        author_id =
+          Map.get(changeset.arguments, :author_id, nil)
 
         if author_id != nil do
           {:ok, author} = DecentralisedBookIndex.Metadata.get_author_by_id(author_id)
@@ -37,6 +38,24 @@ defmodule DecentralisedBookIndex.Metadata.AuthorRole do
       get? true
       filter expr(id == ^arg(:id))
     end
+
+    update :update do
+      primary? true
+      accept [:order, :role]
+      argument :author_id, :uuid
+
+      change fn changeset, _ ->
+        author_id = changeset.arguments.author_id
+
+        if author_id != nil do
+          {:ok, author} = DecentralisedBookIndex.Metadata.get_author_by_id(author_id)
+
+          Ash.Changeset.force_change_attribute(changeset, :author_id, author.id)
+        else
+          changeset
+        end
+      end
+    end
   end
 
   attributes do

lib/decentralised_book_index_web/live/book_live/form_component.ex

@@ -25,6 +25,7 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
             label="Description"
           />
           <.bids_inputs form={@form} myself={@myself} />
+          <.author_roles_inputs form={@form} myself={@myself} />
           <.input field={@form[:format]} type="text" label="Format" /><.input
             field={@form[:language]}
             type="text"
@@ -110,6 +111,70 @@ defmodule DecentralisedBookIndexWeb.BookLive.FormComponent do
     {:noreply, socket}
   end
 
+  def author_roles_inputs(assigns) do
+    ~H"""
+    <h2>Authors</h2>
+
+    <table class="w-full">
+      <thead class="border-b border-zinc-100">
+        <tr>
+          <th class="text-left font-medium text-sm pb-1 px-3">Author</th>
+          <th class="text-left font-medium text-sm pb-1 px-3">Role</th>
+        </tr>
+      </thead>
+      <tbody phx-hook="authorRoleSort" id="authorRoleSort" phx-target={@myself}>
+        <.inputs_for :let={author_roles_form} field={@form[:author_roles]}>
+          <tr data-id={author_roles_form.index}>
+            <td class="px-3">
+              <label for={author_roles_form[:author_id].id} class="hidden">Type</label>
+              <.input field={author_roles_form[:author_id]} />
+            </td>
+
+            <td class="px-3">
+              <label for={author_roles_form[:role].id} class="hidden">Id</label>
+              <.input field={author_roles_form[:role]} />
+            </td>
+          </tr>
+        </.inputs_for>
+      </tbody>
+    </table>
+
+    <.button_link phx-click="add-author-role" phx-target={@myself} kind="primary" size="sm" inverse>
+      Add Author
+    </.button_link>
+    """
+  end
+
+  @impl true
+  def handle_event("add-author-role", params, socket) do
+    socket =
+      update(socket, :form, fn form ->
+        AshPhoenix.Form.add_form(form, :author_roles)
+      end)
+
+    {:noreply, socket}
+  end
+
+  @impl true
+  def handle_event("remove-author-role", %{"path" => path}, socket) do
+    socket =
+      update(socket, :form, fn form ->
+        AshPhoenix.Form.remove_form(form, path)
+      end)
+
+    {:noreply, socket}
+  end
+
+  @impl true
+  def handle_event("reorder-author-role", %{"order" => order}, socket) do
+    socket =
+      update(socket, :form, fn form ->
+        AshPhoenix.Form.sort_forms(form, [:author_roles], order)
+      end)
+
+    {:noreply, socket}
+  end
+
   @impl true
   def update(assigns, socket) do
     {:ok,