lib/knj/errors.rb in knjrbfw-0.0.8 vs lib/knj/errors.rb in knjrbfw-0.0.9

@@ -1,22 +1,23 @@
 module Knj::Errors
-	class Notice < StandardError; end
-	class NotFound < StandardError; end
-	class InvalidData < StandardError; end
-	class Retry < StandardError; end
-	class NoAccess < StandardError; end
-	class Exists < StandardError; end
-	
-	def self.error_str(err, args = {})
+  class Notice < StandardError; end
+  class NotFound < StandardError; end
+  class InvalidData < StandardError; end
+  class Retry < StandardError; end
+  class NoAccess < StandardError; end
+  class Exists < StandardError; end
+  
+  def self.error_str(err, args = {})
+    raise "Invalid object of class '#{err.class.name}' given." if !err.is_a?(Exception)
     str = ""
     
-		if args[:html]
-			str += "<b>#{err.class.name}</b>: #{err.message}<br />\n<br />\n"
-			str += err.backtrace.join("<br />\n")
-		else
-			str += "#{err.class.name}: #{err.message}\n\n"
-			str += err.backtrace.join("\n")
-		end
-		
-		return str
-	end
+    if args[:html]
+      str << "<b>#{err.class.name}</b>: #{err.message}<br />\n<br />\n"
+      str << err.backtrace.join("<br />\n")
+    else
+      str << "#{err.class.name}: #{err.message}\n\n"
+      str << err.backtrace.join("\n")
+    end
+    
+    return str
+  end
 end
\ No newline at end of file