Heroku Review Apps:复制数据库到审查应用程序 [英] Heroku Review Apps: copy DB to review app

问题描述

尝试完全自动化 Heroku 的审查应用(测试版).Heroku 希望我们使用 db/seeds.rb 为最近启动的实例的数据库做种子.

Trying to fully automate Heroku's Review Apps (beta) for an app. Heroku wants us to use db/seeds.rb to seed the recently spun up instance's DB.

我们没有这个应用程序的 db/seeds.rb.我们想设置一个脚本来从当前父级(暂存)复制现有数据库，并将其用作正在审核的新应用的数据库.

We don't have a db/seeds.rb with this app. We'd like to set up a script to copy the existing DB from the current parent (staging) and use that as the DB for the new app under review.

这我可以手动完成:

heroku pg:copy myapp::DATABASE_URL DATABASE_URL --app myapp-pr-1384 --confirm myapp-pr-1384

但我不知道如何将 Heroku 创建的应用名称添加到 postdeploy 脚本中.

But I can't get figure out how to get the app name that Heroku creates into the postdeploy script.

有人试过这个并知道它是如何自动化的吗?

Anyone tried this and know how it might be automated?

推荐答案

我遇到了同样的问题，这是我如何解决的.

I ran into this same issue and here is how I solved it.

1. 将要从中复制的数据库 url 设置为管道基础应用程序上的环境变量.就我而言，这是 STAGING_DATABASE_URL.url 格式为 postgresql://username:password@host:port/db_name.

在您的 app.json 文件中，确保复制该变量.

In your app.json file make sure to copy that variable over.

在您的 app.json 中提供一个新的数据库，它将设置 DATABASE_URL 环境变量.

In your app.json provision a new database which will set the DATABASE_URL environment variable.

使用以下脚本复制数据库pg_dump $STAGING_DATABASE_URL |psql $DATABASE_URL

Use the following script to copy over the database pg_dump $STAGING_DATABASE_URL | psql $DATABASE_URL

这是我的 app.json 文件以供参考:

Here is my app.json file for reference:

{
  "name": "app-name",
  "scripts": {
    "postdeploy": "pg_dump $STAGING_DATABASE_URL | psql $DATABASE_URL && bundle exec rake db:migrate"
  },
  "env": {
    "STAGING_DATABASE_URL": {
      "required": true
    },
    "HEROKU_APP_NAME": {
      "required": true
    }
  },
  "formation": {
    "web": {
      "quantity": 1,
      "size": "hobby"
    },
    "resque": {
      "quantity": 1,
      "size": "hobby"
    },
    "scheduler": {
      "quantity": 1,
      "size": "hobby"
    }
  },
  "addons": [
    "heroku-postgresql:hobby-basic",
    "papertrail",
    "rediscloud"
  ],
  "buildpacks": [
    {
      "url": "heroku/ruby"
    }
  ]
}

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