feat: adds email as fallback for name in member details

lib/mv_web/live/member_live/form.ex

@@ -43,7 +43,7 @@ defmodule MvWeb.MemberLive.Form do
 
           <h1 class="text-2xl font-bold text-center flex-1">
             <%= if @member do %>
-              {@member.first_name} {@member.last_name}
+              {MvWeb.MemberLive.Index.display_name(@member)}
             <% else %>
               {gettext("New Member")}
             <% end %>

lib/mv_web/live/member_live/index.ex

@@ -1165,6 +1165,62 @@ defmodule MvWeb.MemberLive.Index do
     end
   end
 
+  @doc """
+  Returns a display name for a member.
+
+  Combines first_name and last_name if available, otherwise falls back to email.
+  This ensures that members without names still have a meaningful display name.
+
+  ## Examples
+
+      iex> member = %Member{first_name: "John", last_name: "Doe", email: "john@example.com"}
+      iex> display_name(member)
+      "John Doe"
+
+      iex> member = %Member{first_name: nil, last_name: nil, email: "john@example.com"}
+      iex> display_name(member)
+      "john@example.com"
+
+      iex> member = %Member{first_name: "John", last_name: nil, email: "john@example.com"}
+      iex> display_name(member)
+      "John"
+  """
+  def display_name(member) do
+    name_parts =
+      [member.first_name, member.last_name]
+      |> Enum.reject(&blank?/1)
+      |> Enum.map(&String.trim/1)
+      |> Enum.join(" ")
+
+    if name_parts == "" do
+      member.email
+    else
+      name_parts
+    end
+  end
+
+  @doc """
+  Checks if a value is blank (nil, empty string, or only whitespace).
+
+  ## Examples
+
+      iex> blank?(nil)
+      true
+
+      iex> blank?("")
+      true
+
+      iex> blank?("   ")
+      true
+
+      iex> blank?("John")
+      false
+  """
+  def blank?(nil), do: true
+  def blank?(""), do: true
+  def blank?(value) when is_binary(value), do: String.trim(value) == ""
+  def blank?(_), do: false
+
   # Public helper function to format dates for use in templates
   def format_date(date), do: DateFormatter.format_date(date)
 

lib/mv_web/live/member_live/index.html.heex

@@ -129,7 +129,12 @@
         """
       }
     >
-      {member.first_name}
+      {if MvWeb.MemberLive.Index.blank?(member.first_name) &&
+            MvWeb.MemberLive.Index.blank?(member.last_name) do
+        MvWeb.MemberLive.Index.display_name(member)
+      else
+        member.first_name
+      end}
     </:col>
     <:col
       :let={member}

lib/mv_web/live/member_live/show.ex

@@ -35,7 +35,7 @@ defmodule MvWeb.MemberLive.Show do
         </.button>
 
         <h1 class="text-2xl font-bold text-center flex-1">
-          {@member.first_name} {@member.last_name}
+          {MvWeb.MemberLive.Index.display_name(@member)}
         </h1>
 
         <.button variant="primary" navigate={~p"/members/#{@member}/edit?return_to=show"}>