Rails + Heroku：应用程序在Heroku上崩溃但在本地服务器上运行

Question

I've just changed one of my models to support an enum (available since rails 4.1 I think). My app continues to run on my local server but when I deploy to Heroku I get an App Crashed error in the logs and an Application Error when I visit the site. If I remove the enum declaration line from my model it works again. Any ideas why this is happening?

class ModelName < ActiveRecord::Base
  enum status: [ :new ,:old, :both ]
end

Heroku logs:

at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=app.herokuapp.com request_id=005c1584-7217-4685-b41e-a5657122d9e2 fwd="89.242.203.122" dyno= connect= service= status=503 bytes=

Answer 1

It's a very vague question, to be honest. Here's my precursory answer though. Check if you're precompiling your assets in your app. If that doesn't work, see if you're using Postgres as your production databse adapter in your gemfile.