Moved code to relate transfers to another class. Still needs some work.

app/lib/FireflyIII/Helper/Related/Related.php

@@ -0,0 +1,69 @@
+<?php
+namespace FireflyIII\Helper\Related;
+
+use FireflyIII\Database\SwitchUser;
+use Illuminate\Support\Collection;
+
+/**
+ * Class Related
+ *
+ * @package FireflyIII\Helper\Related
+ */
+class Related implements RelatedInterface
+{
+    use SwitchUser;
+
+    /**
+     *
+     */
+    public function __construct()
+    {
+        $this->setUser(\Auth::user());
+    }
+
+    /**
+     * @param array $objectIds
+     *
+     * @return Collection
+     */
+    public function getJournalsByIds(array $objectIds)
+    {
+        /** @var \FireflyIII\Database\TransactionJournal\TransactionJournal $repository */
+        $repository = \App::make('FireflyIII\Database\TransactionJournal\TransactionJournal');
+
+        return $repository->getByIds($objectIds);
+    }
+
+    /**
+     * @param string              $query
+     * @param \TransactionJournal $journal
+     *
+     * @return Collection
+     */
+    public function search($query, \TransactionJournal $journal)
+    {
+        $start = clone $journal->date;
+        $end   = clone $journal->date;
+        $start->startOfMonth();
+        $end->endOfMonth();
+
+        // get already related transactions:
+        $exclude = [$journal->id];
+        foreach ($journal->transactiongroups()->get() as $group) {
+            foreach ($group->transactionjournals() as $current) {
+                $exclude[] = $current->id;
+            }
+        }
+        $exclude = array_unique($exclude);
+
+        $query = $this->getUser()->transactionjournals()
+                      ->withRelevantData()
+                      ->before($end)
+                      ->after($start)
+                      ->whereNotIn('id', $exclude)
+                      ->where('description', 'LIKE', '%' . $query . '%')
+                      ->get();
+
+        return $query;
+    }
+}

app/lib/FireflyIII/Helper/Related/RelatedInterface.php

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+<?php
+
+namespace FireflyIII\Helper\Related;
+use Illuminate\Support\Collection;
+
+/**
+ * Interface RelatedInterface
+ *
+ * @package FireflyIII\Helper\Related
+ */
+interface RelatedInterface
+{
+
+    /**
+     * @param string              $query
+     * @param \TransactionJournal $journal
+     *
+     * @return Collection
+     */
+    public function search($query, \TransactionJournal $journal);
+
+    /**
+     * @param array $objectIds
+     *
+     * @return Collection
+     */
+    public function getJournalsByIds(array $objectIds);
+
+}