From 1e40d07a98e04c2eb8b39a318420cca763b823e0 Mon Sep 17 00:00:00 2001
From: Jackson <jackson@codecraft.nz>
Date: Fri, 6 Apr 2018 14:18:14 +1200
Subject: [PATCH] Set "title field" at a meaningful point in TagField
 instantiation * Switch diet to dogfood

---
 src/TagField.php | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/TagField.php b/src/TagField.php
index 45cf81e..409a9d9 100644
--- a/src/TagField.php
+++ b/src/TagField.php
@@ -65,6 +65,7 @@ class TagField extends DropdownField
      * @param string $title
      * @param null|DataList $source
      * @param null|DataList $value
+     * @param string $titleField
      */
     public function __construct($name, $title = '', $source = [], $value = null, $titleField = 'Title')
     {
@@ -255,10 +256,10 @@ class TagField extends DropdownField
         }
 
         if (is_array($values)) {
-            $values = DataList::create($dataClass)->filter($this->titleField, $values);
+            $values = DataList::create($dataClass)->filter($this->getTitleField(), $values);
         }
 
-        $ids = $values->column($this->titleField);
+        $ids = $values->column($this->getTitleField());
 
         $titleField = $this->getTitleField();
 
@@ -284,10 +285,10 @@ class TagField extends DropdownField
             $name = $this->getName();
 
             if ($source->hasMethod($name)) {
-                $value = $source->$name()->column($this->titleField);
+                $value = $source->$name()->column($this->getTitleField());
             }
         } elseif ($value instanceof SS_List) {
-            $value = $value->column($this->titleField);
+            $value = $value->column($this->getTitleField());
         }
 
         if (!is_array($value)) {