Fixes to getting values from buttons

src/Interactive/BlockActions.php

@@ -87,11 +87,13 @@ final class BlockActions extends Base
 						// For app hometab, the callback is in the view->callback_id array.
 						return object_get($this->_data,sprintf('%s.%s',$this->container_type,$key));
 
+					case 'message_attachment':
+						return NULL;
+
 					default:
 						throw new SlackException('Unknown container type: '.$this->container_type);
 				}
 
-			// @todo See if all responses have a container.type, and if so, put this in base.
 			case 'container_type':
 				return object_get($this->_data,'container.type');
 
@@ -113,14 +115,14 @@ final class BlockActions extends Base
 
 			case 'value':
 				switch (object_get($this->action,'type')) {
-					case 'button':
-						return object_get($this->action,'text.text');
 					case 'external_select':
 					case 'overflow':
 					case 'static_select':
 						return object_get($this->action,'selected_option.value');
 					case 'multi_static_select':
 						return object_get($this->action,'selected_options.value');
+
+					case 'button':
 					default:
 						return object_get($this->action,$key);
 				}