Move some stuff around.

app/Http/Controllers/TransactionController.php

@@ -144,6 +144,7 @@ class TransactionController extends Controller
         // get journal again:
         /** @var TransactionJournal $journal */
         $journal = TransactionJournal::expanded()->where('transaction_journals.id', $journal->id)->first(TransactionJournal::QUERYFIELDS);
+        // TODO REMOVE this in favour of something static in TransactionJournal.
         // cannot edit opening balance
         if ($journal->isOpeningBalance()) {
             throw new FireflyException('Cannot edit this transaction (#' . $journal->id . '). Edit the account instead!');

app/Models/TransactionJournal.php

@@ -3,6 +3,7 @@
 use Auth;
 use Carbon\Carbon;
 use Crypt;
+use FireflyIII\Support\Models\TransactionJournalSupport;
 use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\SoftDeletes;
@@ -58,7 +59,7 @@ use Watson\Validating\ValidatingTrait;
 
  *
  */
-class TransactionJournal extends BaseModel
+class TransactionJournal extends TransactionJournalSupport
 {
     use SoftDeletes, ValidatingTrait;
 

app/Repositories/Bill/BillRepository.php

@@ -447,6 +447,7 @@ class BillRepository implements BillRepositoryInterface
         // looks weird, but is useful:
         /** @var TransactionJournal $journal */
         $journal = TransactionJournal::expanded()->where('transaction_journals.id', $journal->id)->get(TransactionJournal::QUERYFIELDS)->first();
+        // TODO REMOVE this in favour of something static in TransactionJournal.
 
 
         /*

app/Support/Models/TransactionJournalSupport.php

@@ -1,39 +1,44 @@
 <?php
 /**
- * BaseModel.php
+ * TransactionJournalSupport.php
  * Copyright (C) 2016 Sander Dorigo
  *
  * This software may be modified and distributed under the terms
  * of the MIT license.  See the LICENSE file for details.
  */
 
-namespace FireflyIII\Models;
+namespace FireflyIII\Support\Models;
 
+
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
+
 /**
- * Class BaseModel
+ * Class TransactionJournalSupport
  *
- * @package FireflyIII\Models
+ * @package FireflyIII\Support\Models
  */
-class BaseModel extends Model
+class TransactionJournalSupport extends Model
 {
     /**
-     * @param $query
-     * @param $table
+     * @param Builder $query
+     * @param string  $table
      *
      * @return bool
      */
-    public static function isJoined($query, $table)
+    public static function isJoined(Builder $query, string $table):bool
     {
         $joins = $query->getQuery()->joins;
-        if($joins == null) {
+        if (is_null($joins)) {
             return false;
         }
         foreach ($joins as $join) {
-            if ($join->table == $table) {
+            if ($join->table === $table) {
                 return true;
             }
         }
+
         return false;
     }
+
 }