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lib/acm_uc_demo/airplanes/airplane.ex

@@ -7,6 +7,7 @@ defmodule AcmUcDemo.Airplanes.Airplane do
     field :model, :string
     field :tail_number, :string
     field :initial_hours, :decimal
+    has_many :flights, AcmUcDemo.Flights.Flight
 
     timestamps(type: :utc_datetime)
   end

lib/acm_uc_demo/flights.ex

@@ -21,6 +21,24 @@ defmodule AcmUcDemo.Flights do
     Repo.all(Flight)
   end
 
+  @doc """
+  Returns the list of flights for a given airplane with pilot preloaded.
+
+  ## Examples
+
+      iex> list_flights_by_airplane(airplane_id)
+      [%Flight{pilot: %Pilot{}}, ...]
+
+  """
+  def list_flights_by_airplane(airplane_id) do
+    from(f in Flight,
+      where: f.airplane_id == ^airplane_id,
+      order_by: [desc: f.inserted_at],
+      preload: [:pilot]
+    )
+    |> Repo.all()
+  end
+
   @doc """
   Gets a single flight.
 

lib/acm_uc_demo/flights/flight.ex

@@ -5,8 +5,8 @@ defmodule AcmUcDemo.Flights.Flight do
   schema "flights" do
     field :hobbs_reading, :decimal
     field :notes, :string
-    field :pilot_id, :id
-    field :airplane_id, :id
+    belongs_to :pilot, AcmUcDemo.Pilots.Pilot
+    belongs_to :airplane, AcmUcDemo.Airplanes.Airplane
 
     timestamps(type: :utc_datetime)
   end

lib/acm_uc_demo/pilots/pilot.ex

@@ -5,6 +5,7 @@ defmodule AcmUcDemo.Pilots.Pilot do
   schema "pilots" do
     field :name, :string
     field :certificate_number, :string
+    has_many :flights, AcmUcDemo.Flights.Flight
 
     timestamps(type: :utc_datetime)
   end

lib/acm_uc_demo_web/live/airplane_live/show.ex

@@ -2,6 +2,7 @@ defmodule AcmUcDemoWeb.AirplaneLive.Show do
   use AcmUcDemoWeb, :live_view
 
   alias AcmUcDemo.Airplanes
+  alias AcmUcDemo.Flights
 
   @impl true
   def render(assigns) do
@@ -26,15 +27,43 @@ defmodule AcmUcDemoWeb.AirplaneLive.Show do
         <:item title="Tail number">{@airplane.tail_number}</:item>
         <:item title="Initial hours">{@airplane.initial_hours}</:item>
       </.list>
+
+      <div class="mt-11">
+        <.header>
+          Flights
+          <:subtitle>Flight history for this airplane</:subtitle>
+        </.header>
+
+        <div class="mt-6">
+          <%= if @flights == [] do %>
+            <div class="text-center py-12 text-gray-500">
+              No flights recorded for this airplane yet.
+            </div>
+          <% else %>
+            <.table id="flights-table" rows={@flights}>
+              <:col :let={flight} label="Pilot">{flight.pilot.name}</:col>
+              <:col :let={flight} label="Hobbs Reading">{flight.hobbs_reading}</:col>
+              <:col :let={flight} label="Notes">{flight.notes}</:col>
+              <:col :let={flight} label="Date">
+                {Calendar.strftime(flight.inserted_at, "%Y-%m-%d %I:%M %p")}
+              </:col>
+            </.table>
+          <% end %>
+        </div>
+      </div>
     </Layouts.app>
     """
   end
 
   @impl true
   def mount(%{"id" => id}, _session, socket) do
+    airplane = Airplanes.get_airplane!(id)
+    flights = Flights.list_flights_by_airplane(id)
+
     {:ok,
      socket
      |> assign(:page_title, "Show Airplane")
-     |> assign(:airplane, Airplanes.get_airplane!(id))}
+     |> assign(:airplane, airplane)
+     |> assign(:flights, flights)}
   end
 end

test/acm_uc_demo/airplanes_test.exs

@@ -21,7 +21,12 @@ defmodule AcmUcDemo.AirplanesTest do
     end
 
     test "create_airplane/1 with valid data creates a airplane" do
-      valid_attrs = %{make: "some make", model: "some model", tail_number: "some tail_number", initial_hours: "120.5"}
+      valid_attrs = %{
+        make: "some make",
+        model: "some model",
+        tail_number: "some tail_number",
+        initial_hours: "120.5"
+      }
 
       assert {:ok, %Airplane{} = airplane} = Airplanes.create_airplane(valid_attrs)
       assert airplane.make == "some make"
@@ -36,7 +41,13 @@ defmodule AcmUcDemo.AirplanesTest do
 
     test "update_airplane/2 with valid data updates the airplane" do
       airplane = airplane_fixture()
-      update_attrs = %{make: "some updated make", model: "some updated model", tail_number: "some updated tail_number", initial_hours: "456.7"}
+
+      update_attrs = %{
+        make: "some updated make",
+        model: "some updated model",
+        tail_number: "some updated tail_number",
+        initial_hours: "456.7"
+      }
 
       assert {:ok, %Airplane{} = airplane} = Airplanes.update_airplane(airplane, update_attrs)
       assert airplane.make == "some updated make"

test/acm_uc_demo/pilots_test.exs

@@ -34,7 +34,11 @@ defmodule AcmUcDemo.PilotsTest do
 
     test "update_pilot/2 with valid data updates the pilot" do
       pilot = pilot_fixture()
-      update_attrs = %{name: "some updated name", certificate_number: "some updated certificate_number"}
+
+      update_attrs = %{
+        name: "some updated name",
+        certificate_number: "some updated certificate_number"
+      }
 
       assert {:ok, %Pilot{} = pilot} = Pilots.update_pilot(pilot, update_attrs)
       assert pilot.name == "some updated name"

test/acm_uc_demo_web/live/airplane_live_test.exs

@@ -4,8 +4,18 @@ defmodule AcmUcDemoWeb.AirplaneLiveTest do
   import Phoenix.LiveViewTest
   import AcmUcDemo.AirplanesFixtures
 
-  @create_attrs %{make: "some make", model: "some model", tail_number: "some tail_number", initial_hours: "120.5"}
-  @update_attrs %{make: "some updated make", model: "some updated model", tail_number: "some updated tail_number", initial_hours: "456.7"}
+  @create_attrs %{
+    make: "some make",
+    model: "some model",
+    tail_number: "some tail_number",
+    initial_hours: "120.5"
+  }
+  @update_attrs %{
+    make: "some updated make",
+    model: "some updated model",
+    tail_number: "some updated tail_number",
+    initial_hours: "456.7"
+  }
   @invalid_attrs %{make: nil, model: nil, tail_number: nil, initial_hours: nil}
   defp create_airplane(_) do
     airplane = airplane_fixture()

test/acm_uc_demo_web/live/pilot_live_test.exs

@@ -5,7 +5,10 @@ defmodule AcmUcDemoWeb.PilotLiveTest do
   import AcmUcDemo.PilotsFixtures
 
   @create_attrs %{name: "some name", certificate_number: "some certificate_number"}
-  @update_attrs %{name: "some updated name", certificate_number: "some updated certificate_number"}
+  @update_attrs %{
+    name: "some updated name",
+    certificate_number: "some updated certificate_number"
+  }
   @invalid_attrs %{name: nil, certificate_number: nil}
   defp create_pilot(_) do
     pilot = pilot_fixture()