From c9a9c6ea167e67ec9e7fd2bf653cab94c3551aae Mon Sep 17 00:00:00 2001
From: Samuel Georges <sam@daftspunk.com>
Date: Sat, 27 Jun 2015 10:39:07 +1000
Subject: [PATCH] List columns now support specifying a default option used
 when the value would otherwise be null.

---
 CHANGELOG.md                           | 3 +++
 modules/backend/classes/ListColumn.php | 8 ++++++++
 modules/backend/widgets/Lists.php      | 7 +++++++
 3 files changed, 18 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e8c56b741..9791cf245 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+* **Build 27x** (2015-06-xx)
+ - List columns now support specifying a `default` option used when the value would otherwise be null.
+
 * **Build 272** (2015-06-27)
   - Protected images and their thumbnails are now supported in the back-end.
   - Editing CMS templates now support form fields that use AJAX.
diff --git a/modules/backend/classes/ListColumn.php b/modules/backend/classes/ListColumn.php
index e352ef35b..0ba9761b7 100644
--- a/modules/backend/classes/ListColumn.php
+++ b/modules/backend/classes/ListColumn.php
@@ -47,6 +47,11 @@ class ListColumn
      */
     public $valueFrom;
 
+    /**
+     * @var string Specifies a default value when value is empty.
+     */
+    public $defaults;
+
     /**
      * @var string Custom SQL for selecting this record display value,
      * the @ symbol is replaced with the table name.
@@ -134,6 +139,9 @@ class ListColumn
         if (isset($config['valueFrom'])) {
             $this->valueFrom = $config['valueFrom'];
         }
+        if (isset($config['default'])) {
+            $this->defaults = $config['default'];
+        }
         if (isset($config['select'])) {
             $this->sqlSelect = $config['select'];
         }
diff --git a/modules/backend/widgets/Lists.php b/modules/backend/widgets/Lists.php
index 3f5367a5c..080051e87 100644
--- a/modules/backend/widgets/Lists.php
+++ b/modules/backend/widgets/Lists.php
@@ -783,6 +783,13 @@ class Lists extends WidgetBase
             $value = $this->{'eval'. studly_case($column->type) .'TypeValue'}($record, $column, $value);
         }
 
+        /*
+         * Apply default value.
+         */
+        if (empty($value)) {
+            $value = $column->defaults;
+        }
+
         /*
          * Extensibility
          */