Implemented bookings update method.

Fixed some code stlye issues as well as some issues with referencing null.

app/Http/Controllers/BookingsController.php

@@ -7,6 +7,8 @@ use App\SubBooking;
 use App\PersonTarget;
 use App\Project;
 use App\AccountType;
+use App\Http\Requests\StoreBooking;
+use App\Http\Requests\UpdateBooking;
 
 use Illuminate\Http\Request;
 use Carbon\Carbon;
@@ -44,12 +46,17 @@ class BookingsController extends Controller
         //     'incomes' - the sum of all incomes in this month plus the account
         //         balance of the previous month
         for ($month = 1; $month <= 12; $month++) {
-            $sums[$month]['expeditures'] = $expeditures->where('month', '=', $month)->first()->expeditures;
-            $sums[$month]['incomes'] = $expeditures->where('month', '<', $month)->sum('expeditures')
+            $currExpeditures = $expeditures->where('month', '=', $month)->first()->expeditures;
+
+            $currIncomes = $expeditures->where('month', '<', $month)->sum('expeditures')
                 + $incomes->where('month', '<=', $month)->sum('incomes')
                 + $startBalance;
-            $sums[$month]['balance'] = $sums[$month]['expeditures']
-                                       + $sums[$month]['incomes'];
+
+            $currBalance = $currExpeditures + $currIncomes;
+            
+            $sums[$month]['expeditures'] = $currExpeditures;
+            $sums[$month]['incomes'] = $currIncomes;
+            $sums[$month]['balance'] = $currBalance;
         }
 
         return view('bookings.index', compact('bookings', 'year', 'sums'));
@@ -71,7 +78,7 @@ class BookingsController extends Controller
      * @param  \Illuminate\Http\Request $request
      * @return \Illuminate\Http\Response
      */
-    public function store(Request $request)
+    public function store(StoreBooking $request)
     {
         $booking = new Booking;
 
@@ -124,12 +131,14 @@ class BookingsController extends Controller
         // since it is possible that the person target of the sub-booking is no
         // longer open and therefor not loaded into the list of open targets.
         foreach ($booking->subBookings as $subBooking) {
+            if (isset($subBooking->personTarget)) {
                 $personTarget = $subBooking->personTarget;
                 $person = $personTarget->person;
 
                 $formArrays['openTargetsArray'][$person->fullName(true)][$personTarget->id]
                     = $personTarget->reference;
             }
+        }
 
         return view('bookings.edit', array_merge(compact('booking'), $formArrays));
     }
@@ -137,12 +146,62 @@ class BookingsController extends Controller
     /**
      * Update the specified resource in storage.
      *
-     * @param  \Illuminate\Http\Request $request
+     * @param  \App\Http\Requests\UpdateBooking $request
      * @param  \App\Booking             $booking
      * @return \Illuminate\Http\Response
      */
-    public function update(Request $request, Booking $booking)
+    public function update(UpdateBooking $request, Booking $booking)
     {
+        // Fill the booking with the edited values
+        foreach (request('booking') as $colName => $value) {
+            $booking->$colName = $value;
+        }
+
+        // Safe the edited booking in the database.
+        $booking->save();
+
+        // Check, if all sub-booking rows are empty. If so, redirect to the
+        // delete view of the booking.
+        $noMoreSubBookings = true;
+        
+        foreach (request('sub_booking') as $rSubBooking) {
+            if (!allEmpty($rSubBooking)) {
+                $noMoreSubBookings = false;
+                break;
+            }
+        }
+
+        if ($noMoreSubBookings) {
+            return redirect('/bookings/' . $booking->id . '/delete');
+        }
+
+        // Fill a existent or new SubBooking with the values from the form and
+        // safe it in the database.
+        foreach (request('sub_booking') as $id => $rSubBooking) {
+            // If a sub-booking row is completely empty, check whether there was
+            // a sub-booking and all data was removed. In this case, remove the
+            // respective SubBooking from the database.
+            // If the line is the blank line for new entries, skip it.
+            if (allEmpty($rSubBooking)) {
+                if ($id != 0) {
+                    SubBooking::find($id)->delete();
+                }
+                
+                continue;
+            }
+
+            // Create new SubBooking or load an existing one.
+            $subBooking = $id === 0 ?
+                          new SubBooking() :
+                          SubBooking::find($id);
+            
+            foreach ($rSubBooking as $colName => $value) {
+                $subBooking->$colName = $value;
+            }
+
+            $booking->subBookings()->save($subBooking);
+        }
+
         return redirect('/bookings/year-' . Carbon::parse(request('date'))->format('Y'));
     }