added configuration settings for the enhanced slack handler (pr pending)

Author: plandolt

DependencyInjection/Configuration.php

@@ -167,6 +167,8 @@
  *   - [bot_name]: defaults to Monolog
  *   - [icon_emoji]: defaults to null
  *   - [use_attachment]: bool, defaults to true
+ *   - [use_short_attachment]: bool, defaults to false
+ *   - [include_extra]: bool, defaults to false
  *   - [level]: level name or int value, defaults to DEBUG
  *   - [bubble]: bool, defaults to true
  *
@@ -310,6 +312,8 @@ public function getConfigTreeBuilder()
                             ->scalarNode('channel')->end() // slack
                             ->scalarNode('bot_name')->defaultValue('Monolog')->end() // slack
                             ->scalarNode('use_attachment')->defaultTrue()->end() // slack
+                            ->scalarNode('use_short_attachment')->defaultFalse()->end() // slack
+                            ->scalarNode('include_extra')->defaultFalse()->end() // slack
                             ->scalarNode('icon_emoji')->defaultNull()->end() // slack
                             ->scalarNode('notify')->defaultFalse()->end() // hipchat
                             ->scalarNode('nickname')->defaultValue('Monolog')->end() // hipchat

DependencyInjection/MonologExtension.php

@@ -451,6 +451,8 @@ private function buildHandler(ContainerBuilder $container, $name, array $handler
                 $handler['icon_emoji'],
                 $handler['level'],
                 $handler['bubble'],
+                $handler['use_short_attachment'],
+                $handler['include_extra'],
             ));
             break;