bug #6 Fixed the handling of DateTime objects (javiereguiluz)

This PR was merged into the master branch.

Discussion
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Fixed the handling of DateTime objects

This fixes #5.

Commits
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c379ddb Fixed the handling of DateTime objects

src/EasyLogFormatter.php

@@ -265,6 +265,7 @@ private function formatLogChannel($record)
     private function formatContext(array $record)
     {
         $context = $this->filterVariablesUsedAsPlaceholders($record['message'], $record['context']);
+        $context = $this->formatDateTimeObjects($context);
 
         $contextAsString = Yaml::dump($context, $this->getInlineLevel($record), $this->prefixLength);
         $contextAsString = $this->formatTextBlock($contextAsString, '--> ');
@@ -275,7 +276,8 @@ private function formatContext(array $record)
 
     private function formatExtra(array $record)
     {
-        $extraAsString = Yaml::dump(array('extra' => $record['extra']), 1, $this->prefixLength);
+        $extra = $this->formatDateTimeObjects($record['extra']);
+        $extraAsString = Yaml::dump(array('extra' => $extra), 1, $this->prefixLength);
         $extraAsString = $this->formatTextBlock($extraAsString, '--> ');
 
         return $extraAsString;
@@ -475,6 +477,24 @@ private function formatTextBlock($text, $prefix = '', $prefixAllLines = false)
         return implode(PHP_EOL, $newTextLines).($addTrailingNewline ? PHP_EOL : '');
     }
 
+    /**
+     * Turns any DateTime object present in the given array into a string
+     * representation of that date and time.
+     *
+     * @param  array  $array
+     * @return array
+     */
+    private function formatDateTimeObjects(array $array)
+    {
+        array_walk_recursive($array, function (&$value) {
+            if ($value instanceof \DateTimeInterface) {
+                $value = date_format($value, 'c');
+            }
+        });
+
+        return $array;
+    }
+
     /**
      * It scans the given string for placeholders and removes from $variables
      * any element whose key matches the name of a placeholder.