Move some stuff around.

app/Support/Models/TransactionJournalSupport.php

@@ -0,0 +1,44 @@
+<?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\Support\Models;
+
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * Class TransactionJournalSupport
+ *
+ * @package FireflyIII\Support\Models
+ */
+class TransactionJournalSupport extends Model
+{
+    /**
+     * @param Builder $query
+     * @param string  $table
+     *
+     * @return bool
+     */
+    public static function isJoined(Builder $query, string $table):bool
+    {
+        $joins = $query->getQuery()->joins;
+        if (is_null($joins)) {
+            return false;
+        }
+        foreach ($joins as $join) {
+            if ($join->table === $table) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+}