Record paddock state changes

app/Http/Controllers/PaddockController.php

@@ -4,6 +4,7 @@ namespace App\Http\Controllers;
 
 use Illuminate\Http\Request;
 use App\Paddock;
+use App\PaddockStateChange;
 use Redirect;
 
 class PaddockController extends Controller
@@ -85,11 +86,26 @@ class PaddockController extends Controller
             'name' => 'required',
         ]);
 
+        // Was there a state change?
+        $paddock = Paddock::find($id);
+        $state_changed = FALSE;
+        if ($paddock->isClosed && ($request->state === 'opened')) {
+            $state_changed = TRUE;
+        } else if (!$paddock->isClosed && ($request->state === 'closed')) {
+            $state_changed = TRUE;
+        }
+
+        // Record the state change, if needs be
+        if ($state_changed) {
+            $change = new PaddockStateChange(['state' => $request->state]);
+            $paddock->state_changes()->save($change);
+        }
+
         $update = [
             'name' => $request->name,
             'isClosed' => $request->state !== 'opened',
         ];
-        Paddock::where('id', $id)->update($update);
+        $paddock->update($update);
 
         return Redirect::to('paddocks')
             ->with('success', 'Enclos mis à jour.');

app/Http/Controllers/PaddockStateChangeController.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+
+class PaddockStateChangeController extends Controller
+{
+    //
+}