From 47392c5dded651ec558b85e621fc700bffdbdf20 Mon Sep 17 00:00:00 2001
From: Colin Tucker <colin@praxis.net.au>
Date: Thu, 25 Feb 2016 12:32:29 +1100
Subject: [PATCH 1/3] Initial readonly field modifications

---
 code/TagField.php | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/code/TagField.php b/code/TagField.php
index 5b60250..3be84e9 100644
--- a/code/TagField.php
+++ b/code/TagField.php
@@ -406,4 +406,49 @@ class TagField extends DropdownField
     {
         return true;
     }
+    
+    /**
+     * Converts the field to a readonly variant.
+     *
+     * @return TagField_Readonly
+     */
+    public function performReadonlyTransformation()
+    {
+        $copy = $this->castedCopy('TagField_Readonly');
+        
+        return $copy;
+    }
 }
+
+/**
+ * A readonly extension of TagField useful for non-editable items within the CMS.
+ *
+ * @package forms
+ * @subpackage fields
+ */
+class TagField_Readonly extends TagField
+{
+    protected $readonly = true;
+    
+    /**
+     * Render the field as HTML.
+     *
+     * @param array $properties
+     * @return HTMLText
+     */
+    public function Field($properties = array())
+    {
+        $options = array();
+        
+        foreach ($this->getOptions() as $option) {
+            $options[] = $option->Title;
+        }
+        
+        $field = ReadonlyField::create($this->name.'_Readonly', $this->title);
+        
+        $field->setForm($this->form);
+        $field->setValue(implode(', ', $options));
+        
+        return $field->Field();
+    }
+}
\ No newline at end of file

From d3e636e6474d32f7f3eef78bfc52877eaa8c28c0 Mon Sep 17 00:00:00 2001
From: Colin Tucker <colin@praxis.net.au>
Date: Thu, 25 Feb 2016 13:06:21 +1100
Subject: [PATCH 2/3] Filters selected options and renders as readonly

---
 code/TagField.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/code/TagField.php b/code/TagField.php
index 3be84e9..2092e1c 100644
--- a/code/TagField.php
+++ b/code/TagField.php
@@ -415,7 +415,7 @@ class TagField extends DropdownField
     public function performReadonlyTransformation()
     {
         $copy = $this->castedCopy('TagField_Readonly');
-        
+        $copy->setSource($this->getSource());
         return $copy;
     }
 }
@@ -431,7 +431,7 @@ class TagField_Readonly extends TagField
     protected $readonly = true;
     
     /**
-     * Render the field as HTML.
+     * Render the readonly field as HTML.
      *
      * @param array $properties
      * @return HTMLText
@@ -440,7 +440,7 @@ class TagField_Readonly extends TagField
     {
         $options = array();
         
-        foreach ($this->getOptions() as $option) {
+        foreach ($this->getOptions()->filter('Selected', true) as $option) {
             $options[] = $option->Title;
         }
         

From d8b8c875bb0b16c9716009721dceeea93ef7a361 Mon Sep 17 00:00:00 2001
From: Colin Tucker <colin@praxis.net.au>
Date: Thu, 25 Feb 2016 13:18:56 +1100
Subject: [PATCH 3/3] Formatting fix

---
 code/TagField.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/code/TagField.php b/code/TagField.php
index 2092e1c..93db395 100644
--- a/code/TagField.php
+++ b/code/TagField.php
@@ -448,7 +448,6 @@ class TagField_Readonly extends TagField
         
         $field->setForm($this->form);
         $field->setValue(implode(', ', $options));
-        
         return $field->Field();
     }
-}
\ No newline at end of file
+}