Rails 4、Mechanize、Figaro：环境变量在表单中不起作用

Question

我正在尝试登录一个网站，但我的环境变量没有以必要的形式正确插入。我正在使用 Figaro，我的环境变量安全地存储在 config/application.yml 中。我可以确认两件事...

当硬编码我的实际电子邮件和密码时，我能够成功登录

我的环境变量 return 在 Rails 控制台中测试时正确（例如 ENV["WHATEVER"] returns 正确的值）

# app/helpers/scrape_wf.rb

require 'mechanize'

agent = Mechanize.new
page = agent.get('https://www.wealthfront.com/login')
login_form = page.forms.first

# LOG IN UNSUCCESSFUL

login_form.email    = ENV["WF_EMAIL"] 
login_form.password = ENV["WF_PASSWORD"]

home_page = login_form.submit

puts page.title          # => Log In to Wealthfront
puts home_page.title     # => Log In to Wealthfront

# LOG IN SUCCESSFUL

login_form.email    = "my_harcoded_email"
login_form.password = "my_harcoded_password"

home_page = login_form.submit

puts page.title          # => Log In to Wealthfront
puts home_page.title     # => Wealthfront

并在控制台中...

    rails c
    Loading development environment (Rails 4.2.4)
    [1] pry(main)> ENV["WF_EMAIL"]
    => "my_harcoded_email"
    [2] pry(main)> ENV["WF_PASSWORD"]
    => "my_harcoded_password"

我做错了什么...？

Answer 1

根据this excellent post...

When you install the Figaro gem in your Rails app, any values that you enter into config/application.yml will be loaded into the ruby ENV hash on startup.

...因为我正在开发脚本和运行从命令行（即 ruby such_and_such.rb）我的环境变量不是 set/initialized 和因此当脚本执行时它们是空白的。

解决方案：将抓取结果打印到视图（确认有效）而不是控制台。

Rails 4、Mechanize、Figaro：环境变量在表单中不起作用

Rails 4, Mechanize, Figaro: environment variables not working in form

ruby-on-rails-4

environment-variables

mechanize

figaro-ruby