From d2fc5e2f6575b4111f2f87ebca7f021e681d4df9 Mon Sep 17 00:00:00 2001
From: rohit <rohit.arondekar@gmail.com>
Date: Thu, 2 Sep 2010 15:28:00 +0530
Subject: [PATCH] Output a friendly message when no type given for
 GeneratedAttribute [#5461 state:resolved]
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Signed-off-by: José Valim <jose.valim@gmail.com>
---
 railties/lib/rails/generators/generated_attribute.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/railties/lib/rails/generators/generated_attribute.rb b/railties/lib/rails/generators/generated_attribute.rb
index 3b9fff2f4a25d..64273e4ca429c 100644
--- a/railties/lib/rails/generators/generated_attribute.rb
+++ b/railties/lib/rails/generators/generated_attribute.rb
@@ -6,6 +6,7 @@ class GeneratedAttribute
       attr_accessor :name, :type
 
       def initialize(name, type)
+        raise Thor::Error, "Missing type for attribute '#{name}'.\nExample: '#{name}:string' where string is the type." if type.blank?
         @name, @type = name, type.to_sym
       end