Merge pull request #152 from Alex-Ikanow/update_handler_text_size

#141 change delayed_job.handler to mediumtext (16MB) like event.payload

db/migrate/20140127164931_change_handler_to_medium_text.rb

@@ -0,0 +1,19 @@
+# Increase handler size to 16MB (consistent with events.payload)
+
+class ChangeHandlerToMediumText < ActiveRecord::Migration
+  def up
+    if mysql?
+      change_column :delayed_jobs, :handler, :text, :limit => 16777215
+    end
+  end
+
+  def down
+    if mysql?
+      change_column :delayed_jobs, :handler, :text, :limit => 65535
+    end
+  end
+
+  def mysql?
+    ActiveRecord::Base.connection.adapter_name =~ /mysql/i
+  end
+end