ruby - Firebase 全局变量 Ruby

Question

https://github.com/oscardelben/firebase-ruby

如何跨方法而不是本地使用 firebase，如示例所示？例如:@firebase , 见贴在—— http://bpaste.net/show/501b6a67c8d4

或者——

require 'sinatra'
require 'firebase'
require 'bundler'
Bundler.require

# Configure database
configure do
  @base_uri = 'https://veriyo.firebaseio.com/'
  @firebase = Firebase::Client.new(@base_uri)
end

# Display homepage
get '/' do
  erb :index
end

post '/search' do
  @username = params["username"]
  redirect to("/user/#{@username}")
end

get '/user/:username' do
  response = @firebase.push("todos", { :name => @username })
  'hello'
end

在那里无法访问@firebase 变量的属性 -- #<NoMethodError: undefined method为 nil:NilClass>`

推送'

Answer 1

将它们设置为常量:

FB_Base_uri = 'https://veriyo.firebaseio.com/'
FB_Firebase = Firebase::Client.new(FB_Base_uri)